ORDER NO. CRT2261 KEH-P4800 MULTI-CD CONTROL HIGH … · -See the separate manual CX-631(CRT1640)...
Transcript of ORDER NO. CRT2261 KEH-P4800 MULTI-CD CONTROL HIGH … · -See the separate manual CX-631(CRT1640)...
PIONEER ELECTRONIC CORPORATION 4-1, Meguro 1-Chome, Meguro-ku, Tokyo 153-8654, Japan PIONEER ELECTRONICS SERVICE INC. P.O.Box 1760, Long Beach, CA 90801-1760 U.S.A.PIONEER ELECTRONIC [EUROPE] N.V. Haven 1087 Keetberglaan 1, 9120 Melsele, Belgium PIONEER ELECTRONICS ASIACENTRE PTE.LTD. 501 Orchard Road, #10-00, Wheelock Place, Singapore 238880
C PIONEER ELECTRONIC CORPORATION 1998 K-ZZU. OCT. 1998 Printed in Japan
ORDER NO.
CRT2261
MULTI-CD CONTROL HIGH POWER CASSETTE PLAYER WITH FM/AM TUNER
KEH-P4800 X1M/UC
ServiceManual
CONTENTS1. SAFETY INFORMATION............................................22. EXPLODED VIEWS AND PARTS LIST ......................23. SCHEMATIC DIAGRAM.............................................84. PCB CONNECTION DIAGRAM................................225. ELECTRICAL PARTS LIST........................................326. ADJUSTMENT.........................................................39
7. GENERAL INFORMATION.......................................417.1 PARTS ................................................................41
7.1.1 IC ...............................................................417.1.2 DISPLAY ...................................................45
7.2DISASSEMBLY ...................................................467.3BLOCK DIAGRAM ..............................................47
8. OPERATIONS AND SPECIFICATIONS....................48
NOTE:
- See the separate manual CX-631(CRT1640) for the cassette mechanism description.
- The cassette mechanism assy employed in this model is one of 2L series.
- This service manual does not describe the CD test mode.For the operations in the CD test mode, refer to the CD player's Service Manual.
KEH-P4850 X1M/ES
KEH-P4850/X1M/ES
4
KEH-P4800,P4850
2.2 EXTERIOR
5
KEH-P4800,P4850
1 Screw BSZ26P050FMC2 Screw BSZ30P050FMC3 Cord Assy CDE57984 Fuse(10A) CEK11365 Case CNB2350
6 Panel CNS51327 Screw BSZ30P050FMC8 Screw BSZ30P200FMC9 Holder CNC5704
10 Cushion CNM5210
11 Insulator CNM596312 Tuner Amp Unit See Contrast table(2)13 Screw BPZ26P080FMC14 Screw BSZ26P080FMC15 Screw BSZ26P160FMC
16 FM/AM Tuner Unit See Contrast table(2)17 Holder CNC655418 Pin Jack(CN301) CKB103519 Plug(CN603) CKM127020 Connector(CN701) CKS3408
21 Connector(CN602) CKS356822 Connector(CN601) CKS358123 Antenna Jack(CN402) CKX105624 Panel CNB234325 Holder CNC5399
26 Holder CNC684527 Holder CNC799628 Heat Sink CNR150529 Chassis Unit CXB301230 Screw ISS26P055FUC
31 Holder Unit CXB268732 Detach Grille Assy See Contrast table(2)33 Screw BPZ20P060FMC34 Screw BPZ20P100FZK35 Button(Detach) CAC5789
36 Button(1-6) CAC579437 Button(-) CAC593038 Button(EQ) CAC613539 Button(+) CAC578340 Button(Eject) CAC5793
41 Button(Display) CAC578842 Button(Cross) CAC578643 Button(A,B) CAC578744 Spring CBH210345 Cover CNS5130
46 Housing CNV552847 Keyboard Unit See Contrast table(2)48 LCD(LCD1901) CAW154349 Connector(CN1901) CKS358050 Holder CNC7981
51 Sheet CNM594152 Lighting Conductor CNV552753 Connector CNV553154 Grille Unit See Contrast table(2)55 Button CAC4836
56 Spring CBH183457 Spring CBH183558 Spring CBH218259 Bracket CNC613560 Bracket CNC6791
61 Arm CNV469262 Arm CNV469363 Arm CNV472864 Panel Unit CXB301965 Door CAT2028
66 Spring CBH183867 Screw IMS20P030FZK68 Case Assy CXB352069 Cassette Mechanism ModuleEXK3695
70 IC(IC302) TDA738471 Transistor(Q904) 2SD2396
(1) EXTERIOR SECTION PARTS LIST
Mark No. Description Part No. Mark No. Description Part No.
6
KEH-P4800,P4850
2.3 CASSETTE MECHANISM MODULE
(2)CONTRAST TABLEKEH-P4800/X1M/UC and KEH-P4850/X1M/ES have the same construction except for the following:
Part No.Mark No. Description KEH-P4800/X1M/UC KEH-P4850/X1M/ES
12 Tuner Amp Unit CWM6248 CWM624916 FM/AM Tuner Unit CWE1467 CWE148632 Detach Grille Assy CXB3322 CXB332347 Keyboard Unit CWM6259 CWM626054 Grille Unit CXB4065 CXB4066
7
KEH-P4800,P4850
Mark No. Description Part No. Mark No. Description Part No.
1 Screw BSZ20P040FMC2 Washer CBF10373 Washer CBF10384 Washer CBG10035 Deck Unit EWM1021
6 Screw EBA10287 Screw EBA10378 Spring EBH15319 Spring EBH1575
10 Plug(CN251) CKS3540
11 Spring EBH151512 Spring EBH158713 Spring EBH151714 Spring EBH151815 •••••
16 Spring EBH153717 Cord EDD102018 Photo-interrupter(EGN2,3) EGN100619 Photo-interrupter(EGN1) EGN100520 Roller ENR1031
21 Shaft ELA137322 Pinch Roller ENV151823 Arm ENC148924 Arm ENC139725 Guide ENC1481
26 Holder ENC141727 Lever ENC144828 Arm ENC1488
* 29 Motor EXM103130 Belt ENT1027
31 Gear ENV134732 Collar ENV150833 Gear ENV135034 Flywheel ENV150035 Worm Gear ENV1439
36 Worm Wheel ENV144037 Gear ENR102838 Lever ENV144239 •••••40 Gathering PCB ENX1037
41 Gathering PCB ENX104242 Switch(S1) ESG100443 Motor Unit(M2) EXA148544 Chassis Unit EXA151145 Pinch Holder ENV1485
46 Pinch Holder ENV148647 Reel Unit EXA154348 Head Base Unit EXA145749 Lever Unit EXA143850 Gear Unit EXA1574
51 Frame Unit EXA145852 Lever Unit EXA143953 Head Assy(HD1) EXA150654 Motor Unit(M1) EXA149055 Washer HBF-179
56 Screw BMZ20P022FMC57 Spring EBH154558 Washer YE20FUC59 Pinch Holder Unit EXA152960 Pinch Holder Unit EXA1528
- CASSETTE MECHANISM MODULE SECTION PARTS LIST
8
KEH-P4800,P4850
A
1 2 3 4
B
C
D
1 2 3 4
3. SCHEMATIC DIAGRAM3.1 OVERALL CONNECTION DIAGRAM(GUIDE PAGE)Note: When ordering service parts, be sure to refer to “EXPLODED VIEWS AND PARTS LIST” or “ELECTRICAL PARTS
LIST”.
A-a A-b
A-a A-b
A-b A-a
Large sizeSCH diagram
Guide page
Detailed page
4R7/
16
UC model
ES model
331:
UC
mo
del
510:
ES
mo
del
FM/AM TUNER UNIT
TAPE: -9dBs
FM: -15.5dBsAM: -22dBs
For resistors and capacitors in the circuit diagrams, their resistance values orcapacitance values are expressed in codes:
Ex. *Resistors Code Practical value 123 12k ohms 103 10k ohms
*Capacitors Code Practical value 103 10kpF(0.01uF) 101/10 100uF/10V
B
D
KEYBOARD UNITC
DE
CK
UN
IT
A-a
A
9
KEH-P4800,P48505 6 7 8
A
B
C
D
5 6 7 8
102:UC103:ES
PD4973A
TUNER AMP UNIT
CD: +2.2dBs
FM: +9.6dBsAM: -3.1dBsTAPE: -4dBsCD: +10.3dBs
FM: +35.6dBsAM: +29.1dBsTAPE: +22.0dBsCD: +36.3dBs
SYSTEM CONTROLLER
IP-BUS DRIVER
ELECTRONIC VOLUME
POWER AMP
RESET
8V REGULATER
A
IP-BUS
CEK1136
TAPE: -4.2dBs
CN1901
T
332/
16
A
A-b
10
KEH-P4800,P4850
A
1 2 3 4
B
C
D
1 2 3 4
4R7/16
UC
mo
del
ES
mo
del
331:UC model510:ES model
102:
U10
3:E
FM/A
M T
UN
ER
UN
IT
FM: -
15.5
dB
sA
M: -
22d
Bs
B
A-a
A-a
A-b
11
KEH-P4800,P48505 6 7 8
A
B
C
D
5 6 7 8
TA
PE
: -9d
Bs
SY
ST
EM
For
resi
sto
rs a
nd
cap
acit
ors
in t
he
circ
uit
dia
gra
ms,
th
eir
resi
stan
ce v
alu
es o
rca
pac
itan
ce v
alu
es a
re e
xpre
ssed
in c
od
es:
Ex.
*R
esis
tors
C
od
e
P
ract
ical
val
ue
1
23
12k
oh
ms
1
03
10k
oh
ms
*C
apac
ito
rs
Co
de
P
ract
ical
val
ue
1
03
10kp
F(0.
01u
F)
101
/10
10
0uF/
10V
D
CN
1901
KE
YB
OA
RD
UN
ITC
DECK UNIT
A-a
A-a
A-b
12
KEH-P4800,P4850
A
1 2 3 4
B
C
D
1 2 3 4
TU
NE
R A
MP
UN
IT
FM: +
9.6d
Bs
AM
: -3.
1dB
sT
AP
E: -
4dB
sC
D: +
10.3
dB
s
FM: +
35.6
dB
sA
M: +
29.1
dB
sT
AP
E: +
22.0
dB
sC
D: +
36.3
dB
s
IP-B
US
DR
IVE
R
ELE
CT
RO
NIC
VO
LUM
E
PO
WE
R A
MP
RE
SE
T
8V R
EG
ULA
TE
R
A
CE
K11
36
TA
PE
: -4.
2dB
s
332/16
A-a
A-b
A-b
13
KEH-P4800,P48505 6 7 8
A
B
C
D
5 6 7 8
PD
4973
A
CD
: +2.
2dB
s
CO
NT
RO
LLE
R
8V R
EG
ULA
TE
R
IP-B
US
A-b
A-a
A-b
14
KEH-P4800,P4850
A
1 2 3 4
B
C
D
1 2 3 4
3.2 FM/AM TUNER UNIT- KEH-P48000/X1M/UC
B
3
1
2
FM/AM TUNER U
D1
D2
RD
39JS
RD
39JS
R1
R2
2R2M
2R2M
D6
MA
157
B
15
KEH-P4800,P48505 6 7 8
A
B
C
D
5 6 7 8
B
ER UNIT IFC
A
3
1
2
FM/AM TUNER U
D1
D2
RD
39JS
RD
39JS
R1
R2
2R2M
2R2M
D6
MA
157
16
KEH-P4800,P4850
A
1 2 3 4
B
C
D
1 2 3 4
- KEH-P4850/X1M/ES
B
B
ER UNIT IFC
17
KEH-P4800,P48505 6 7 8
A
B
C
D
5 6 7 8
B
A
18
KEH-P4800,P4850
A
1 2 3 4
B
C
D
1 2 3 4
CAW1543
3.3 KEYBOARD UNIT
C
19
KEH-P4800,P48505 6 7 8
A
B
C
D
5 6 7 8
C KEYBOARD UNIT
43
IL1901-1905:CEL160540mA 14V
EDIT
CLOCK
PTY
PAUSE/BSM
C
CN
601
A
20
KEH-P4800,P4850
A
1 2 3 4
B
C
D
1 2 3 4
3.4 CASSETTE MECHANISM MODULE
D
DECK UNIT
MU
TE
CXA2559Q
11121314151617181920
40393837363534333231
30 29 28 27 26 25 24 23 22 21
1 2 3 4 5 6 7 8 9 10
CN602
R256 220
R287
0R0
C273
22/16
R283 0R0
R284 0R0
R282 0R0
C253 330P
C254 330P
C252 330P
C251 330P
R281 0R0
R255 220
C256
R01
R258
1K
R30
1
18K
R273 1K
R274 1K
R271 1K
R272 1K
R290 0R0
C403 R068
R403 82K
C402
4700P
C401R33
R40216K
R4014R7K
R32
30R
0
R257
1K
C255
R01
C272 R1
C31
310
0P
R38
60R
0
R28
50R
0
HD1HEAD ASSYEXA1506
TEST TAPENCT-150(400Hz, 200nWb/m)
RL
RR
FR
FL
Signal GND
C30
2
R1
C30
2
R1
C30
1
R1
R304R30216K16K
R305
16K
R303
16K
-6dBs(388mV)±1dB A
D
21
KEH-P4800,P48505 6 7 8
A
B
C
D
5 6 7 8
FED
PCB UNIT
REEL PCB
SWITCHES:PCB UNIT S1:LOAD SWITCH..........EJECT-PLAY S2:70µs SWITCH............ON-OFFThe underlined indicates the switch position.
0R0
R068
3 82K
R40216K
R4014R7K
R35
11K
R35
21K
R35
31K
R35
41K
R373 0R0
R35
527
0K
C35
239
00P
R36
218
0
C35
1R
22
C35
3R
01
C35
4R
01
R374 0R0
C356 R01
C355 R1D35
21S
S35
5
M1MOTOR UNIT(MAIN MOTOR)EXA1490
S1 LOAD
ESG1004 S2
ESG1004
70µs
MODESENSE
EGN1EGN1005
EGN2EGN1006FWD ENDSENSE
EGN3EGN1006REV ENDSENSE
M2MOTOR UNIT(SUB MOTOR)EXA1485
Power GND
E
F
31
KEH-P4800,P48501 2 3 4
A
B
C
D
1 2 3 4
Fig. 20
FE
E PCB UNIT
REEL PCB
SIDE A
SIDE B
E
F
LOAD SWS1
70µ SWS2
MODE SENSEEGN1
1
4
7
1 2 3 4 5 6
E PCB UNIT
D CN253
F
32
KEH-P4800,P4850
5. ELECTRICAL PARTS LISTNOTE:- Parts whose parts numbers are omitted are subject to being not supplied.
- The part numbers shown below indicate chip components.Chip Resistor
RS1/_S___J,RS1/__S___JChip Capacitor (except for CQS.....)
CKS....., CCS....., CSZS.....
D 604 Diode 1SS270D 605 Diode 1SS270D 606 Diode 1SS270L 501 Ferri-Inductor LAU2R2KL 502 Ferri-Inductor LAU2R2K
L 601 Ferri-Inductor LAU2R2KL 602 Ferri-Inductor LAU2R2KL 603 Ferri-Inductor LAU2R2KL 702 Ferri-Inductor LAU2R2KL 901 Choke Coil 600µH CTH1168
X 501 Crystal Resonator 7.200MHz CSS1379X 601 Ceramic Resonator 4.194MHz CSS1047
RESISTORS
R 301 RS1/10S0R0JR 302 RS1/10S0R0JR 310 RS1/10S103JR 317 RS1/10S152JR 318 RS1/10S103J
R 319 RS1/10S221JR 320 RS1/10S101JR 321 RS1/10S223JR 322 RS1/10S153JR 323 RS1/10S103J
R 325 RS1/10S821JR 326 RS1/10S821JR 327 RS1/10S223JR 328 RS1/10S223JR 333 RS1/10S101J
R 334 RS1/10S101JR 335 RS1/10S223JR 336 RS1/10S223JR 337 RD1/4PU102JR 338 RD1/4PU102J
R 340 RS1/10S0R0JR 342 RS1/10S0R0JR 401 (ES model) RS1/10S182JR 402 RS1/10S162JR 403 RS1/10S162J
R 404 RS1/10S0R0JR 405 (UC model) RS1/10S331JR 405 (ES model) RS1/10S510JR 406 RS1/10S102JR 407 RD1/4PU222J
R 408 RS1/10S222JR 410 RS1/10S102JR 412 RD1/4PU103JR 413 RS1/10S393JR 417 RS1/10S0R0J
R 418 RS1/10S0R0JR 419 RS1/10S0R0JR 502 RS1/10S102JR 503 RS1/10S222JR 506 RS1/10S182J
Unit Number : CWM6248(KEH-P4800/X1M/UC)CWM6249(KEH-P4850/X1M/ES)
Unit Name : Tuner Amp Unit
MISCELLANEOUS
D 607 Diode 1SS270D 608 Diode 1SS270D 901 Diode HZS7L(C2)D 902 Diode 1SR139-400D 903 Diode 1SR139-400
D 904 Diode HZS7L(A1)D 905 Diode 1SR139-400D 906 Diode HZS6L(B2)D 907 Diode HZS9L(B3)D 908 Diode HZS9L(A2)
D 909 Diode 1SR139-400D 910 Diode 1SR139-400IC 301 IC PML003AMIC 302 IC TDA7384IC 501 IC PM2006A
IC 601 IC PD4973AIC 602 IC S-80734ANIC 702 IC CA0008AMIC 901 IC TPD1018FQ 306 Transistor DTC124EK
Q 307 Transistor 2SC1740SQ 308 Transistor DTC143TKQ 309 Transistor DTC143TKQ 310 Transistor DTA124EKQ 401 Transistor 2SC2412K
Q 505 Transistor DTA124EKQ 506 Transistor DTC114EKQ 601 Transistor 2SA933SQ 701 Transistor 2SA1037KQ 702 Transistor DTC114EK
Q 901 Transistor 2SC1740SQ 902 Transistor 2SC2412KQ 903 Transistor 2SD2037Q 904 Transistor 2SD2396Q 905 Transistor 2SB1243
Q 906 Transistor 2SC1740SQ 907 Transistor 2SA1048Q 908 Transistor DTC114TKQ 909 Transistor 2SA1674Q 910 Transistor DTC114TK
Q 911 Transistor 2SC2412KQ 920 Transistor DTC114ESQ 921 Transistor DTA124ESD 301 Diode 1SS270D 302 Diode 1SS270
D 401 Diode 1SS270D 402 Diode 1SS270D 601 Diode 1SS270D 602 Diode 1SS270D 603 Diode 1SS270
=====Circuit Symbol and No.===Part Name Part No.--- ------ ------------------------------------------ -------------------------
=====Circuit Symbol and No.===Part Name Part No.--- ------ ------------------------------------------ -------------------------
A
33
KEH-P4800,P4850
R 511 RS1/10S0R0JR 512 (UC model) RS1/10S0R0JR 513 RS1/10S102JR 514 RS1/8S0R0JR 515 RS1/10S562J
R 517 RS1/10S473JR 518 RS1/10S152JR 519 RS1/10S472JR 520 RS1/10S222JR 521 RS1/10S822J
R 522 RS1/10S392JR 523 RS1/10S0R0JR 524 RS1/10S562JR 525 RS1/10S222JR 526 RS1/10S392J
R 527 RS1/10S392JR 528 RS1/10S472JR 529 RS1/10S473JR 531 RS1/10S104JR 532 RS1/10S473J
R 535 RD1/10S102JR 536 RS1/10S473JR 601 RS1/10S124JR 604 RS1/10S473JR 607 RD1/4PU102J
R 610 RS1/10S473JR 611 RS1/10S473JR 612 RS1/10S473JR 613 RS1/10S473JR 614 RS1/8S103J
R 615 RS1/10S392JR 616 RD1/4PU222JR 617 RD1/4PU223JR 618 RD1/4PU222JR 619 RD1/4PU222J
R 621 RS1/10S222JR 622 RS1/10S222JR 623 RD1/4PU222JR 624 RS1/10S222JR 625 RD1/4PU222J
R 626 RD1/4PU222JR 627 RD1/4PU222JR 628 RD1/4PU222JR 629 RD1/4PU681JR 630 RS1/10S681J
R 633 RD1/4PU681JR 634 RD1/4PU681JR 635 RD1/4PU222JR 636 RS1/10S472JR 637 RS1/10S103J
R 638 RD1/4PU222JR 639 RS1/10S223JR 641 RD1/4PU222JR 642 RS1/10S473JR 643 RS1/10S472J
R 644 RS1/10S472JR 645 RS1/10S472JR 646 RS1/10S103JR 647 RS1/10S103JR 648 (ES model) RS1/10S183J
R 649 (UC model) RS1/10S102JR 649 (ES model) RS1/10S103JR 651 RD1/4PU222JR 653 RS1/8S0R0JR 654 RS1/10S0R0J
R 655 RS1/10S473JR 716 RS1/10S620JR 717 RS1/10S101JR 718 RS1/10S101JR 719 RS1/10S473J
R 720 RS1/10S473JR 721 RS1/10S102JR 722 RS1/10S102JR 723 RS1/10S102JR 724 RS1/10S223J
R 725 RD1/4PU472JR 726 RS1/10S222JR 901 RS1/10S473JR 902 RS1/10S223JR 903 RS1/10S223J
R 904 RS1/10S473JR 905 RD1/4PU102JR 906 RD1/4PU473JR 907 RS1/10S473JR 908 RS1/10S472J
R 909 RS1/10S332JR 910 RD1/4PU101JR 911 RS1/10S122JR 912 RS1/10S103JR 913 RS1/10S103J
R 914 RS1/10S102JR 915 RS1/10S103JR 916 RS1/10S103JR 917 RS1/10S0R0JR 919 RS1/10S102J
R 920 RS1/10S103JR 921 RS1/10S152JR 922 RS1/10S102JR 923 RS1/10S103JR 924 RS1/10S223J
R 944 RS1/10S152JR 948 RS1/10S0R0JR 949 RS1/8S0R0J
CAPACITORS
C 303 CEJA470M10C 304 CEJA100M16C 308 CKSQYB104K50C 309 CKSQYB224K16C 310 CKSQYB224K16
C 311 CKSQYB224K16C 312 CKSQYB224K16C 313 CEJA4R7M35C 314 CEJA4R7M35C 315 CEJA330M10
C 316 CEJA1R0M50C 317 CEJA100M16C 318 CKSYB105K16C 319 CKSQYB224K16C 320 CKSQYB224K16
C 321 CKSQYB224K16C 322 CKSQYB224K16C 323 CKSQYB104K50C 324 3300µF/16V CCH1169C 325 CEJA2R2M50
C 326 CEJA2R2M50C 327 CEJA1R0M50C 328 CEJA1R0M50C 329 CEJA1R0M50C 330 CEJA1R0M50
=====Circuit Symbol and No.===Part Name Part No.--- ------ ------------------------------------------ -------------------------
=====Circuit Symbol and No.===Part Name Part No.--- ------ ------------------------------------------ -------------------------
34
KEH-P4800,P4850
C 331 CKSQYB153K50C 332 CKSQYB153K50C 401 CKSQYB473K50C 402 CKSQYB473K50C 403 CKSQYB223K25
C 407 CKSQYB223K50C 408 CCSQSL101J50C 411 CCSQSL101J50C 413 CKSQYB223K50C 414 CKSQYB103K50
C 504 CKSQYB103K50C 505 CKSQYB103K50C 506 (ES model) CKSQYB103K50C 507 CEJA220M6R3C 508 CKSQYB102K50
C 510 CCSQSL101J50C 511 CKSQYB103K50C 512 CKSQYB103K50C 513 CKSQYB103K50C 514 CCSQCH150J50
C 515 CKSQYB102K50C 516 CCSQCH150J50C 518 CKSQYB103K50C 519 CEJA220M6R3C 520 CKSQYB103K50
C 521 CEJA220M6R3C 522 CKSQYB104K50C 524 CKSQYB103K50C 525 4.7µF/16V CCH1250C 527 CKLSR473K16
C 528 CKSQYB154K16C 530 CEJA220M10C 601 CKSQYB473K50C 602 CEJA2R2M50C 603 CCSQCH101J50
C 604 CCSQCH101J50C 608 CEJA4R7M35C 609 CEJA100M16C 610 CEJA220M10C 611 CKSQYB223K50
C 715 CKSQYB102K50C 716 CKSQYB104K50C 901 CEJA101M10C 902 CKSQYB473K50C 903 470µF/16V CCH1183
C 904 CKSQYB103K50C 905 330µF/10V CCH1181C 906 CKSQYB103K50C 907 100µF/16V CCH1179C 908 CKSQYB103K50
C 910 CKSQYB472K50
Unit Number : CWM6259(KEH-P4800/X1M/UC)CWM6260(KEH-P4850/X1M/ES)
Unit Name : Keyboard Unit
MISCELLANEOUS
D 1901 Chip Diode MA151WKD 1902 Diode MA151WAIC 1901 IC PD6278AL 1901 Ferri-Inductor LAU101KX 1901 Ceramic Resonator 4.97MHz CSS1422
S 1901 Switch CSG1041S 1902 Switch CSG1111S 1903 Switch CSG1111S 1904 Switch CSG1111S 1905 Switch CSG1111
S 1906 Switch CSG1111S 1907 Switch CSG1111S 1908 Switch CSG1111S 1909 Switch CSG1111S 1910 Switch CSG1111
S 1911 Switch CSG1111S 1912 Switch CSG1111S 1913 Switch CSG1111S 1914 Switch CSG1041S 1915 Switch CSG1041
S 1916 Switch CSG1111S 1917 Switch CSG1111S 1918 Switch CSG1041S 1919 Switch CSG1041S 1920 Switch CSG1111
S 1921 Switch CSG1111S 1922 Switch CSG1110IL 1901 Lamp 40mA 14V CEL1605IL 1902 Lamp 40mA 14V CEL1605IL 1903 Lamp 40mA 14V CEL1605
IL 1904 Lamp 40mA 14V CEL1605IL 1905 Lamp 40mA 14V CEL1605LCD1901 LCD CAW1543
RESISTORS
R 1901 RS1/10S222JR 1902 RS1/10S222JR 1903 RS1/10S472JR 1908 RS1/10S473JR 1909 RS1/10S473J
R 1910 RS1/10S473JR 1911 RS1/10S473JR 1912 RS1/10S473JR 1913 RS1/10S473JR 1922 RS1/10S473J
CAPACITORS
C 1901 CEAL100M16C 1902 CKSQYB104K16
Number : CWE1467(UC model)Unit Name : FM/AM Tuner Unit
MISCELLANEOUS
IC 1 IC PA4023BIC 2 IC PA4024AQ 1 Transistor 2SC2412KQ 2 Transistor DTC124EUQ 3 FET 3SK263
Q 31 Transistor 2SC2412KQ 201 FET 2SK932Q 202 Transistor 2SC2412KQ 203 Transistor DTC124EUD 1 Diode RD39JS
D 2 Diode RD39JSD 4 Diode 1SV250D 5 Diode KV1410-F1D 6 Diode MA157D 7 Diode KV1410-F1
D 8 Diode KV1410-F1D 201 Diode MA157D 202 Diode MA157D 231 Diode SVC253L 2 Coil CTC1133
=====Circuit Symbol and No.===Part Name Part No.--- ------ ------------------------------------------ -------------------------
=====Circuit Symbol and No.===Part Name Part No.--- ------ ------------------------------------------ -------------------------
C
B
35
KEH-P4800,P4850
L 3 Inductor LCTB2R2K2125L 4 Coil CTC1133L 5 Coil CTC1132L 51 Ferri-Inductor LAU150KL 201 Ferri-Inductor LAU4R7K
L 202 Ferri-Inductor LAU330KL 203 Inductor CTF1287L 208 Inductor LAU121KL 231 Inductor LCTA3R3J3225T 31 Coil CTE1117
T 51 Coil CTC1159CF 51 Ceramic Filter CTF1441CF 52 Ceramic Filter CTF1441CF 53 Ceramic Filter CTF1441CF 232 Ceramic Filter CTF1348
X 151 Radiator 918.5Hz CSS1365X 231 Crystal Resonator 10.26MHz CSS1111VR 154 Semi-fixed 150kΩ(B) CCP1213
RESISTORS
R 1 RS1/16S225JR 2 RS1/16S225JR 4 RS1/16S154JR 5 RS1/16S391JR 6 RS1/16S223J
R 7 RS1/16S123JR 8 RS1/16S332JR 9 RS1/16S473JR 10 RS1/16S223JR 11 RS1/16S124J
R 13 RS1/16S563JR 15 RS1/16S271JR 16 RS1/16S104JR 17 RS1/16S332JR 18 RS1/16S332J
R 31 RS1/16S470JR 32 RS1/16S822JR 33 RS1/16S822JR 34 RS1/16S331JR 35 RS1/16S331J
R 51 RS1/16S271JR 52 RS1/16S560JR 55 RS1/16S102JR 56 RS1/16S823JR 61 RS1/16S392J
R 62 RS1/16S273JR 101 RS1/16S272JR 102 RS1/16S682JR 103 RS1/16S333JR 104 RS1/16S334J
R 105 RS1/16S683JR 107 RS1/16S222JR 151 RS1/16S222JR 152 RS1/16S393JR 155 RS1/16S273J
R 156 RS1/16S243JR 157 RS1/16S203JR 160 RS1/16S222JR 161 RS1/16S563JR 162 RS1/16S105J
R 163 RS1/16S223JR 202 RS1/16S223JR 203 RS1/16S225JR 204 RS1/16S103JR 206 RS1/16S220J
R 207 RS1/16S101JR 208 RS1/16S102JR 209 RS1/16S471JR 214 RS1/16S822JR 215 RS1/16S822J
R 217 RS1/16S102JR 231 RS1/16S272JR 232 RS1/16S473JR 237 RS1/16S103JR 238 RS1/16S104J
R 239 RS1/16S104JR 240 RS1/16S332JR 241 RS1/16S202JR 243 RS1/16S183JR 244 RS1/16S392J
R 247 RS1/16S123J
CAPACITORS
C 1 CCSQCH6R0D50C 2 CCSRCK2R0C50C 4 CCSRCH820J50C 6 CCSRCH820J50C 8 CKSRYB103K25
C 9 CKSQYB104K16C 10 CCSRCKR50C50C 11 CEJA1R0M50C 12 CKSRYB222K50C 13 CKSRYB222K50
C 14 CCSRCH220J50C 15 CCSRCH6R0D50C 16 CCSRCH8R0D50C 17 CKSRYB222K50C 18 CKSRYB103K25
C 19 CKSRYB222K50C 20 CKSRYB222K50C 21 CEJA100M16C 22 CCSRTH9R0D50C 23 CCSRTH120J50
C 24 CCSRCH471J50C 25 CKSRYB103K25C 26 CCSRCH101J50C 31 CKSRYB103K25C 32 CKSQYB472K50
C 33 CCSRCH5R0C50C 34 CKSQYB104K16C 36 CCSRRH201J50C 51 CKSRYB223K25C 52 CKSRYB103K25
C 54 CCSRCH470J50C 55 CKSQYB223K25C 56 CKSQYB104K16C 57 CKSRYB472K50C 58 CEJA330M10
C 59 CKSRYB103K25C 60 CKSRYB102K50C 61 CCSRCH270J50C 62 CKSRYB103K25C 63 CEJAR22M50
C 101 CEJANP100M10C 102 CKSRYB182K50C 103 CKSRYB682K25C 104 CEJA2R2M50C 105 CKSRYB103K25
=====Circuit Symbol and No.===Part Name Part No.--- ------ ------------------------------------------ -------------------------
=====Circuit Symbol and No.===Part Name Part No.--- ------ ------------------------------------------ -------------------------
36
KEH-P4800,P4850
C 106 CCSRCH151J50C 107 CKSRYB103K25C 151 CKSRYB472K50C 152 CKSQYB104K16C 153 CEJA3R3M50
C 154 CKSQYB104K16C 157 CEJA3R3M50C 158 CKSYB474K16C 159 CEJA220M6R3C 160 CKSQYB104K16
C 161 CKSQYB104K16C 162 CEJA3R3M50C 163 CKSRYB102K50C 170 CCSRCH100D50C 201 CCSRCH471J50
C 202 CCSRCH100D50C 203 CKSRYB332K50C 204 CKSQYB473K16C 205 CKSQYB473K16C 206 CKSQYB104K16
C 207 CCSRCH560J50C 209 CKSQYB104K16C 211 CCSRCH101J50C 212 CEJA470M6R3C 213 CKSRYB103K25
C 216 CCSRCH101J50C 217 CEJA1R5M50C 219 CCSRCH471J50C 220 CKSRYB103K25C 230 CKSRYB103K25
C 231 CCSRCH330J50C 232 CCSRCH150J50C 233 CKSQYB104K16C 234 CEJA330M10C 235 CKSRYB332K50
C 236 CKSQYB473K16C 237 CCSRCH120J50C 239 CKSRYB472K50C 240 CEJAR47M50C 241 CKSQYB104K16
C 242 CEJAR47M50C 243 CEJAR33M50C 244 CKSQYB473K16C 245 CKSRYB333K16C 246 CKSQYB473K16
C 250 CCSRCH471J50
Unit Number : CWE1486(ES model)Unit Name : FM/AM Tuner Unit
MISCELLANEOUS
IC 1 IC PA4023BIC 2 IC PA4024AQ 1 Transistor 2SC2412KQ 2 Transistor DTC124EUQ 3 FET 3SK263
Q 31 Transistor 2SC2412KQ 201 FET 2SK932Q 202 Transistor 2SC2412KQ 203 Transistor DTC124EUD 1 Diode RD39JS
D 2 Diode RD39JSD 4 Diode 1SV250D 5 Diode KV1410-F1D 6 Diode MA157D 7 Diode KV1410-F1
D 8 Diode KV1410-F1D 201 Diode MA157D 202 Diode MA157D 231 Diode SVC253L 2 Coil CTC1133
L 3 Inductor LCTB2R2K2125L 4 Coil CTC1133L 5 Coil CTC1132L 6 Inductor LCTBR15K1608L 51 Ferri-Inductor LAU150K
L 201 Ferri-Inductor LAU4R7KL 202 Ferri-Inductor LAU330KL 203 Inductor CTF1287L 208 Inductor LAU121KL 231 Inductor LCTA3R3J3225
T 31 Coil CTE1117T 51 Coil CTC1159CF 51 Ceramic Filter CTF1441CF 52 Ceramic Filter CTF1441CF 53 Ceramic Filter CTF1441
CF 232 Ceramic Filter CTF1348X 151 Radiator 918.5Hz CSS1365X 231 Crystal Resonator 10.26MHz CSS1111VR 154 Semi-fixed 150kΩ(B) CCP1213
RESISTORS
R 1 RS1/16S225JR 2 RS1/16S225JR 4 RS1/16S154JR 5 RS1/16S391JR 6 RS1/16S223J
R 7 RS1/16S123JR 8 RS1/16S332JR 9 RS1/16S473JR 10 RS1/16S223JR 11 RS1/16S124J
R 13 RS1/16S563JR 15 RS1/16S271JR 16 RS1/16S104JR 17 RS1/16S332JR 18 RS1/16S332J
R 31 RS1/16S470JR 32 RS1/16S822JR 33 RS1/16S822JR 34 RS1/16S331JR 35 RS1/16S331J
R 51 RS1/16S271JR 52 RS1/16S560JR 55 RS1/16S102JR 56 RS1/16S823JR 61 RS1/16S392J
R 62 RS1/16S273JR 101 RS1/16S272JR 102 RS1/16S682JR 103 RS1/16S333JR 104 RS1/16S334J
R 105 RS1/16S683JR 107 RS1/16S222JR 151 RS1/16S222JR 152 RS1/16S393JR 155 RS1/16S273J
R 156 RS1/16S243JR 157 RS1/16S203JR 160 RS1/16S222JR 161 RS1/16S563JR 162 RS1/16S105J
=====Circuit Symbol and No.===Part Name Part No.--- ------ ------------------------------------------ -------------------------
=====Circuit Symbol and No.===Part Name Part No.--- ------ ------------------------------------------ -------------------------
B
37
KEH-P4800,P4850
R 163 RS1/16S223JR 202 RS1/16S223JR 203 RS1/16S225JR 204 RS1/16S103JR 206 RS1/16S220J
R 207 RS1/16S101JR 208 RS1/16S102JR 209 RS1/16S471JR 214 RS1/16S822JR 215 RS1/16S822J
R 217 RS1/16S102JR 231 RS1/16S272JR 232 RS1/16S473JR 237 RS1/16S103JR 238 RS1/16S104J
R 239 RS1/16S104JR 240 RS1/16S332JR 241 RS1/16S202JR 243 RS1/16S183JR 244 RS1/16S392J
R 247 RS1/16S123J
CAPACITORS
C 1 CCSQCH6R0D50C 2 CCSRCK2R0C50C 4 CCSRCH820J50C 6 CCSRCH820J50C 8 CKSRYB103K25
C 9 CKSQYB104K16C 10 CCSRCKR50C50C 11 CEJA1R0M50C 12 CKSRYB222K50C 13 CKSRYB222K50
C 14 CCSRCH220J50C 15 CCSRCH6R0D50C 16 CCSRCH8R0D50C 17 CKSRYB222K50C 18 CKSRYB103K25
C 19 CKSRYB222K50C 20 CKSRYB222K50C 21 CEJA100M16C 22 CCSRTH9R0D50C 23 CCSRTH120J50
C 24 CCSRCH471J50C 25 CKSRYB103K25C 31 CKSRYB103K25C 32 CKSQYB472K50C 33 CCSRCH5R0C50
C 34 CKSQYB104K16C 36 CCSRRH201J50C 51 CKSRYB223K25C 52 CKSRYB103K25C 54 CCSRCH470J50
C 55 CKSQYB223K25C 56 CKSQYB104K16C 57 CKSRYB472K50C 58 CEJA330M10C 59 CKSRYB103K25
C 60 CKSRYB102K50C 61 CCSRCH270J50C 62 CKSRYB103K25C 63 CEJAR22M50C 101 CEJANP100M10
C 102 CKSRYB182K50C 103 CKSRYB682K25C 104 CEJA2R2M50C 105 CKSRYB103K25C 106 CCSRCH151J50
C 107 CKSRYB103K25C 151 CKSRYB472K50C 152 CKSQYB104K16C 153 CEJA3R3M50C 154 CKSQYB104K16
C 157 CEJA3R3M50C 158 CKSYB474K16C 159 CEJA220M6R3C 160 CKSQYB104K16C 161 CKSQYB104K16
C 162 CEJA3R3M50C 163 CKSRYB102K50C 170 CCSRCH100D50C 201 CCSRCH471J50C 202 CCSRCH100D50
C 203 CKSRYB332K50C 204 CKSQYB473K16C 205 CKSQYB473K16C 206 CKSQYB104K16C 207 CCSRCH560J50
C 209 CKSQYB104K16C 211 CCSRCH101J50C 212 CEJA470M6R3C 213 CKSRYB103K25C 216 CCSRCH101J50
C 217 CEJA1R5M50C 219 CCSRCH471J50C 220 CKSRYB103K25C 230 CKSRYB103K25C 231 CCSRCH330J50
C 232 CCSRCH150J50C 233 CKSQYB104K16C 234 CEJA330M10C 235 CKSRYB332K50C 236 CKSQYB473K16
C 237 CCSRCH120J50C 239 CKSRYB472K50C 240 CEJAR47M50C 241 CKSQYB104K16C 242 CEJAR47M50
C 243 CEJAR33M50C 244 CKSQYB473K16C 245 CKSRYB333K16C 246 CKSQYB473K16C 250 CCSRCH471J50
Unit Number : EWM1021Unit Name : Deck Unit
MISCELLANEOUS
IC 251 IC CXA2559QIC 351 IC PA2020AD 352 Diode 1SS355
RESISTORS
R 255 RS1/16S221JR 256 RS1/16S221JR 257 RS1/16S102JR 258 RS1/16S102JR 271 RS1/16S102J
=====Circuit Symbol and No.===Part Name Part No.--- ------ ------------------------------------------ -------------------------
=====Circuit Symbol and No.===Part Name Part No.--- ------ ------------------------------------------ -------------------------
D
R 272 RS1/16S102JR 273 RS1/16S102JR 274 RS1/16S102JR 281 RS1/8S0R0JR 282 RS1/8S0R0J
R 283 RS1/8S0R0JR 284 RS1/8S0R0JR 285 RS1/16S0R0JR 286 RS1/16S0R0JR 287 RS1/8S0R0J
R 290 RS1/8S0R0JR 301 RS1/16S183JR 302 RS1/16S163JR 303 RS1/16S163JR 304 RS1/16S163J
R 305 RS1/16S163JR 323 RS1/8S0R0JR 351 RS1/16S102JR 352 RS1/16S102JR 353 RS1/16S102J
R 354 RS1/16S102JR 355 RS1/10S274JR 362 RS1/8S181JR 373 RS1/8S0R0JR 374 RS1/8S0R0J
R 401 RS1/16S472JR 402 RS1/16S163JR 403 RS1/16S823J
CAPACITORS
C 251 CKSRYB331K50C 252 CKSRYB331K50C 253 CKSRYB331K50C 254 CKSRYB331K50C 255 CKSRYB103K25
C 256 CKSRYB103K25C 272 CKSQYB104K16C 273 CEJA220M16C 301 CKSYB104K50C 302 CKSYB104K50C 313 CCSQCH101K50C 351 CKSYB224K25C 352 CKSQYB392K50C 353 CKSQYB103K50C 354 CKSQYB103K50
C 355 CKSYB104K50C 356 CKSQYB103K50C 401 CKSQYB334K16C 402 CKSQYB472K50C 403 CKSQYB683K16
Unit Number :Unit Name : PCB Unit
S 1 Switch (Load) ESG1004EGN 1 Photo-Interrupter EGN1005
Unit Number :Unit Name : Reel PCB
EGN 2 Photo-Interrupter EGN1006EGN 3 Photo-Interrupter EGN1006
Miscellaneous Parts List
M 1 Motor Unit (Main) EXA1490M 2 Motor Unit (Sub) EXA1485HD 1 Head Assy EXA1506
38
KEH-P4800,P4850
E
=====Circuit Symbol and No.===Part Name Part No.--- ------ ------------------------------------------ -------------------------
F
39
KEH-P4800,P4850
FM
/AM
TU
NE
R U
NIT
4Ω
4Ω
Lch +
Lch -
Rch +
Rch -
BACK UP
ACC
GND
+14.4V
GND
AntennaJack
mV Meter (1) Oscilloscope
DC RegulatedPower Supply
TUNER AMP UNIT
50 Ω(75Ω )
FM SSG StereoModulator
50Ω (37.5Ω )Antenna Plug
Dummy AntennaD
EC
K U
NIT
VR401
DC V Meter(2)
SIDE B
FM/AM TUNER UNIT (TOP VIEW)
T31
T51
C63
T51 CenterMeter
FM/AM TUNER UNIT (BOTTOM VIEW)
Pin1
Pin13
Pin14
Pin 19
Pin26L2
L4
L5
VR154
TC1
DC VMeter(1)
Q402 EMITTER
6. ADJUSTMENT- Connection Diagram
40
KEH-P4800,P4850
Modulation M:MONO MOD., 400Hz 30%(22.5kHz Dev.) or 400Hz 100%(75kHz Dev.)S:STEREO MOD., 1kHz, L or R=30%(20.25kHz+7.5kHz Dev.)
NOTE:Before proceeding to further adjustments after switching power ON, let the tuner run for ten minutes to allow the circuits to stabilize.
FM ADJUSTMENT(UC MODEL)
FM SSG Displayed Adjustment Adjustment MethodNo. Frequency(MHz) Level(dBf) Frequency(MHz) Point (Switch Position)
TUN Volt 1 ••••• ••••• 107.9 L5 DC V Meter(1) : 6VIF 2 98.1 M 60—100 98.1 T51 Center Meter : 0ANT Coil 3 98.1 M 5 98.1 L2 mV Meter(1) : MaximumRF Coil 4 98.1 M 5 98.1 L4 mV Meter(1) : MaximumIFT 5 98.1 M 5 98.1 T31 mV Meter(1) : Maximum
(STEREO MODE)ARC 6 98.1 S 40 98.1 VR154 mV Meter(1) : Separation 5dB
(STEREO MODE)
FM ADJUSTMENT(ES MODEL)
FM SSG Displayed Adjustment Adjustment MethodNo. Frequency(MHz) Level(dBf) Frequency(MHz) Point (Switch Position)
TUN Volt 1 ••••• ••••• 108.0 L5 DC V Meter(1) : 6VIF 2 98.1 M 60—100 98.1 T51 Center Meter : 0ANT Coil 3 98.1 M 5 98.1 L2 mV Meter(1) : MaximumRF Coil 4 98.1 M 5 98.1 L4 mV Meter(1) : MaximumIFT 5 98.1 M 5 98.1 T31 mV Meter(1) : Maximum
(STEREO MODE)ARC 6 98.1 S 40 98.1 VR154 mV Meter(1) : Separation 5dB
(STEREO MODE)
41
KEH-P4800,P4850
7. GENERAL INFORMATION7.1 PARTS7.1.1 ICCXA2559Q
42
KEH-P4800,P4850
- Pin Functions(PD4973A)Pin No. Pin Name I/O Format Function and Operation
1 ASENBO O C Slave power supply control output2 NC Not used3 ADPW O C A/D converter power output4 AVSS GND5 swvdd O C Grille power supply control output6 st I FM stereo input7 AVREF1 D/A converter standard voltage8 KYDT I Grille MicroComputer data input9 DPDT O C Grille MicroComputer data output
10 NC Not used11 TUNPDI I PLL IC data input12 TUNPDO O C PLL IC data output13 TUNPCK O C PLL IC clock output14 TUNPCE O C PLL IC chip enable output
15,16 NC Not used17 TX O C IP BUS data output
18,19 NC Not used20 DIMMER O C Dimmer select output21 DRELAY O C Detach alarm relay output22 VST O C Strobe pulse output for electronic volume23 VCK O C Clock output for electronic volume24 VDT O C Data output for electronic volume25 LCDPW O C LCD back light power supply control output26 ILMPW O C Illumination power supply control output27 DRSENS I Door open/close sense input28 DRSYS O C Door system select output29 FM O C FM power control output30 AM O C AM power control output31 CM O C Cassette mechanism capstan motor control output32 NC Not used33 VSS GND34 SC2 O C Cassette mechanism sub motor control output35 SC1 O C Cassette mechanism sub motor control output36 MSIN I Cassette mechanism MS sense input37 RIMUTE O N RI output port38 mtlsw I Metal sense input39 dled O N Alarm LED output40 n/R O C Normal reverse output41 PLAY O C Tape MS filter select output42 loadsw I Tape loading input43 POS I Cassette mechanism position sense input44 RES I Cassette mechanism reverse end sense input45 PEE O C Beep tone output46 NES I Cassette mechanism forward end sense input47 NC Not used48 STBY O C Stand-by output
49–52 NC Not used53 SD I SD input 54 mute O C Mute output55 SYSPW O C System power supply control output
56–59 NC Not used60 RESET I Reset input61 RX I IP BUS data input62 NC Not used63 dsens I Grille detach sense input64 TELIN I TEL mute signal input65 asens I ACC power sense input66 bsens I Back up power sense input67 CLKIN I Clock input
43
KEH-P4800,P4850
IC's marked by* are MOS type.Be careful in handling them because they are veryliable to be damaged by electrostatic induction.
Format MeaningC C MOSN N Channel open drain
*PD6278A
16
1732
33
48
49 64
1
Pin No. Pin Name I/O Format Function and Operation68 VDD VDD69 X2 Oscillator output70 X1 Oscillator input71 IC Connect to GND72 XT2 Sub Clock terminal73 TESTIN I Test program mode input74 AVDD A/D converter analog power supply (VDD)75 AVREF0 I A/D converter standard voltage input76 SL I Signal level input77 MODEL0 I Model select input78 MODEL1 I Model select input
79,80 NC Not used
801
20
21 40
41
60
61
*PD4973A
44
KEH-P4800,P4850
- Pin Functions (PD6278A)Pin No. Pin Name I/O Function and Operation
1-5 SEG4-0 O LCD segment output6-9 COM3-0 O LCD common output 10 V3 LCD drive power supply
11-14 KS4-1 O Key strobe output15,16 KD1,2 I Key data input (analogue input)
17 REM I Remote control reception18 RXD I System micro computer UART communication data input19 rst I System reset20 TXD O System micro computer UART communication data output21 MODA GND22 X0 Crystal oscillator connection pin23 X1 Crystal oscillator connection pin24 VSS GND
25,26 KD3,4 I Key data input27,28 KS6,5 O Key strobe output29-55 SEG39-13 O LLCD segment output
56 VCC Power supply57-64 SEG12-5 O LCD segment output
1 2 3 4 5 6 7 8 9 10 11 12 13 14
1516171819202122232425262728
Vref IN1_L IN2_L IN3_L IN4+_L AGND Loud- out_L
SVin_L Front- out_L
Rear- out_L
FIE_L DGNDIN4-_L CLK
VCC IN1_R IN2_R IN3_R IN4+_R AGNDLoud- out_R SVin_R
Front- out_R
Rear- out_R FIE_R STBIN4-_R DATA
Isolator circuit
Primary volume
Anti Alias filter
Treble
Anti radiation filter
Middle Bass
Loudness volume
FIE
Fadervolume
Secondary volume
Zero crossdetect circuit
Primary volume
Anti Alias filter
Middle
Treble
Bass
Isolator circuit
Anti radiation filter
Loudness volume
Zero crossdetect circuit
Fadervolume
Secondary volume
FIE
Digital block
Auto-Zero
Auto-Zero
PML003AM
45
KEH-P4800,P4850
7.1.2 DISPLAY
- CAW1543
CO
MM
ON
SE
GM
EN
T
47
KEH-P4800,P4850
7.3 BLOCK DIAGRAM
BA
D
F
E
C
48
KEH-P4800,P4850
8. OPERATIONS AND SPECIFICATIONS
+
1.T
his
Un
it
11.F
use
3.A
nte
nn
aja
ck
2.R
ear
ou
tpu
t
4.M
ult
i-C
Dp
laye
r(s
old
sep
arat
ely)
8.To
elec
tric
term
inal
con
tro
lled
by
ign
itio
nsw
itch
(12
VD
C)
ON
/OFF
.
12.C
on
nec
tin
gco
rds
wit
hR
CA
pin
plu
gs
(so
ldse
par
atel
y)
13.B
lue/
wh
ite
14.S
yste
mre
mo
teco
ntr
ol
15.T
osy
stem
con
tro
lter
min
alo
fth
ep
ow
eram
po
rA
uto
-an
ten
na
rela
yco
ntr
olt
erm
inal
.(M
ax.3
00m
A12
VD
C)
16.P
ow
eram
p(s
old
sep
arat
ely)
20.R
ear
20.R
ear
≠
+ ≠
30.U
seth
isfo
rco
nn
ecti
on
sw
hen
you
hav
eth
ese
pa-
rate
lyav
aila
ble
amp
lifie
r.
6.To
veh
icle
(met
al)
bo
dy.
+
20.R
ear
20.R
ear
≠
+ ≠
+
17.L
eft
spea
ker
18.R
igh
tsp
eake
r
19.F
ron
t
+
19.F
ron
t
≠
+ ≠
5.B
lack
7.R
ed
9.Ye
llow
21.W
hit
e
22.W
hit
e/b
lack
23.G
ray
24.G
ray/
bla
ck
25.G
reen
26.G
reen
/bla
ck
27.V
iole
t
28.V
iole
t/b
lack
29.W
ith
a2
spea
ker
syst
em,
con
nec
tto
the
2sp
eak-
ers
inth
efr
on
to
rth
ere
ar.
10.T
ote
rmin
alal
way
ssu
pp
lied
wit
hp
ow
erre
gar
dle
sso
fig
nit
ion
swit
chp
osi
tio
n.
≠ ++
≠
++ ≠ ≠
+ ≠
+ ≠
53
KEH-P4800,P4850
GeneralPower source .......... 14.4 V DC (10.8 – 15.1 V allowable)Grounding system ........................................ Negative typeMax. current consumption ........................................ 8.5 ADimensions
(DIN) (chassis) ...... 178 (W) × 50 (H) × 155 (D) mm(nose) ............ 188 (W) × 58 (H) × 19 (D) mm
(D) (chassis) ...... 178 (W) × 50 (H) × 160 (D) mm(nose) ............ 170 (W) × 48 (H) × 14 (D) mm
Weight ...................................................................... 1.2 kg
AmplifierContinuous power output is 17 W per channel min. into 4ohms, both channels driven 50 to 15,000 Hz with no morethan 5% THD.Maximum power output ...................................... 40 W × 4Load impedance .......................... 4 Ω (4 – 8 Ω allowable)Preout maximum output
level/output impedance ...................... 2.2 Vp-p/1 kΩEqualizer (3 band equalizer)
(Low) .............................................................. ±12 dB(Mid) .............................................................. ±12 dB(High) .............................................................. ±12 dB
Loudness contour(Low) .................. +3.5 dB (100 Hz), +3 dB (10 kHz)(Mid).................. +10 dB (100 Hz), +6.5 dB (10 kHz)(High).................. +11 dB (100 Hz), +11 dB (10 kHz)
(volume: –30 dB)
Cassette playerTape ........................ Compact cassette tape (C-30 – C-90)Tape speed ........ 4.76 cm/sec.(+0.14cm/sec.,-0.05cm/sec.)Fast forward/rewinding time .... Approx. 100 sec. for C-60Wow & flutter .......................................... 0.09% (WRMS)Frequency response .......... Metal: 30 – 16,000 Hz (±3 dB)Stereo separation ...................................................... 45 dBSignal-to-noise ratio .................... 61 dB (IEC-A network)
FM tunerFrequency range(UCmodel) ..................87.5 – 107.9 MHz
(ESmodel) ........................................ 87.5 – 108 MHzUsable sensitivity .................................................... 11 dBf
(1.0 µV/75 Ω, mono, S/N: 30 dB)50 dB quieting sensitivity .... 16 dBf (1.7 µV/75 Ω, mono)Signal-to-noise ratio ...................... 70 dB (IEC-A network)Distortion .......................... 0.3% (at 65 dBf, 1 kHz, stereo)Frequency response ...................... 30 – 15,000 Hz (±3 dB)Stereo separation .......................... 40 dB (at 65 dBf, 1 kHz)Selectivity(UCmodel) ......................................70dB(2ACA)Three-signal intermodulation(UCmodel)
(desired signal level) ..........................................50dBf(two undesire signal level : 100 dBf)
AM tunerFrequency range ........................ 531 – 1,602 kHz (9 kHz)
(ESmodel) 530 – 1,710 kHz (10 kHz)Usable sensitivity .............................. 18 µV (S/N: 20 dB)Selectivity (ESmodel) ................................ 50 dB (±9 kHz)
50 dB (±10 kHz)
Note:• Specifications and the design are subject to
possible modification without notice due toimprovements.
8.2. SPECIFICATIONS