Pioneer KEH-P8800R/EW User manual

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. 253 Alexandra Road, #04-01, Singapore 159936
C PIONEER ELECTRONIC CORPORATION 1999 K-ZZB. APR. 1999 Printed in Japan
ORDER NO.
CRT2341
MULTI-CD/MD/DAB CONTROL HIGH POWER CASSETTE PLAYER WITH RDS TUNER
KEH-P8800R EW
Service
Manual
CONTENTS
1. SAFETY INFORMATION ............................................2
2. EXPLODED VIEWS AND PARTS LIST.......................2
3. BLOCK DIAGRAM AND SCHEMATIC DIAGRAM ...12
4. PCB CONNECTION DIAGRAM ................................30
5. ELECTRICAL PARTS LIST ........................................40
6. ADJUSTMENT..........................................................52
7. GENERAL INFORMATION .......................................53
7.1 DISASSEMBLY ...................................................53
7.2 IC ........................................................................54
8. OPERATIONS AND SPECIFICATIONS.....................61
-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.
- Dolby noise reduction manufactured under license from Dolby Laboratories Licensing Corporation.
"Dolby" and the double-D symbol are trademarks of Dolby Laboratories Licensing Corporation.
- 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-P8800R/EW
KEH-P8850 ES
MULTI-CD CONTROL HIGH POWER CASSETTE PLAYER WITH FM/AM TUNER
KEH-P8800R-W EW
SERVICE PRECAUTION : (KEH-P8850/ES only)
In the first production, the following parts had been mounted temporarily to support the microcomputer
IC601 (PD5496A): R631 (RS1/10S102J), R632 (RS1/10S473J), and IC631 (Non spare part).
When replacing IC601 PD5496A, use PD5496B as IC601, and then remove the 3 parts listed above.

2
KEH-P8800R,P8800R-W,P8850
1. SAFETY INFORMATION
This service manual is intended for qualified service technicians; it is not meant for the casual do-it-yourselfer.
Qualified technicians have the necessary test equipment and tools, and have been trained to properly and safely repair
complex products such as those covered by this manual.
Improperly performed repairs can adversely affect the safety and reliability of the product and may void the warranty.
If you are not qualified to perform the repair of this product properly and safely; you should not risk trying to do so
and refer the repair to a qualified service technician.
2. EXPLODED VIEWS AND PARTS LIST
2.1 PACKING
- KEH-P8800R/EW, KEH-P8800R-W/EW
9
6
2
3
4
7
14
8
15
5
10
12
11
1
13
16
21 20 20
17
18
19
24
22 23

KEH-P8800R,P8800R-W,P8850
3
NOTE:
-Parts marked by “*” are generally unavailable because they are not in our Master Spare Parts List.
-Screws adjacent to ∇mark on the product are used for disassembly.
-Owner's Manual, Installation Manual
Model Part No. Language
KEH-P8800R/EW CRD2956 English, Spanish
KEH-P8800R-W/EW CRD2957 German, French
CRD2958 Italian, Dutch
CRD2959 English, Spanish, German, French, Italian, Dutch
-PACKING SECTION PARTS LIST
Part No.
Mark No. Description KEH-P8800R/EW KEH-P8800R-W/EW
1 Cord Assy CDE6007 CDE6007
2 Accessory Assy CEA2538 CEA2538
3 Screw CBA1002 CBA1002
4 Screw CBA1120 CBA1120
5 Handle CNC5395 CNC5395
6 Bush CNV1917 CNV1917
* 7 Polyethylene Bag E36-615 E36-615
* 8 Cover CEG1088 CEG1088
9-1 Polyethylene Bag CEG1116 CEG1116
9-2 Owner’s Manual CRD2956 CRD2956
9-3 Owner’s Manual CRD2957 CRD2957
9-4 Owner’s Manual CRD2958 CRD2958
9-5 Installation Manual CRD2959 CRD2959
* 9-6 Caution Card CRP1207 CRP1207
9-7 Passport CRY1013 CRY1013
* 9-8 Warranty Card CRY1087 CRY1087
9-9 Caution Card CRP1208 CRP1208
10 Case Assy CXB3520 CXB3520
11 Battery CEX1030 CEX1030
12 Carton CHG3778 CHG3779
13 Contain Box CHL3778 CHL3779
14 Protector CHP2186 CHP2186
15 Protector CHP2187 CHP2187
16 Remote Control Assy CXB3488 CXB3488
17 Screw Assy CZE3169 CZE3169
* 18 Polyethylene Bag CEG-127 CEG-127
* 19 Hexagonal Wrench CZE3176 CZE3176
* 20 Screw RMZ30H060FBK RMZ30H060FBK
21 Belt CZN6416 CZN6416
22 Holder Assy CZX3172 CZX3172
23 Holder Assy CZX3173 CZX3173
24 Remote Control Assy CZX3231 CZX3231

4
KEH-P8800R,P8800R-W,P8850
- KEH-P8850/ES
16 7
6
8
24
14
22
17
23
21
19
20 15
11
10
13
18
2
5
34
25
9
12
1

5
KEH-P8800R,P8800R-W,P8850
1 Cord Assy CDE5867
2 Base Assy CEA2426
* 3 Base CNS5031
* 4 Sheet CZA3371
5 Polyethylene Bag CZE3188
* 6 Accessory Assy CEA2431
7 Spring CBH-865
* 8 Screw Assy CEA2434
9 Screw BMZ50P060FMC
10 Screw CBA1002
11 Screw CBA1120
* 12 Polyethylene Bag CEG-127
13 Screw CMZ50P060FMC
* 14 Polyethylene Bag CEG-158
15 Handle CNC5395
16 Bush CNV1917
* 17 Cover CEG1088
18-1 Polyethylene Bag CEG1116
18-2 Owner’s Manual CRD2962
18-3 Owner’s Manual CRD2963
18-4 Installation Manual CRD2964
* 18-5 Caution Card CRP1207
19 Battery CEX1006
20 Carton CHG3777
21 Contain Box CHL3777
22 Protector CHP2186
23 Protector CHP2187
24 Case Assy CXB3520
25 Remote Control Assy CXB3875
Mark No. Description Part No. Mark No. Description Part No.
-PACKING SECTION PARTS LIST
-Owner's Manual, Installation Manual
Model Part No. Language
KEH-P8850/ES CRD2962 English, Spanish
CRD2963 Portuguese, Arabic
CRD2964 English, Spanish, Portuguese, Arabic

6
KEH-P8800R,P8800R-W,P8850
55
AA
B
B
C
C
10
102
2
9
1
105
1
1
14 14 14
4
42
48
72
82
54
43
79
53
46
59
75 47
81
45
76
74
78
49
49
56
64 67
50
51
49
49
62
62 70
69
58
50
80
74
57 52
68
49
57
13
88 94 86
90
89
100 93
92
99
98 97
87
85
87
101
20
16
19
16
17
17
15
83
87
96
95
91
52
69
65
44
44
77
60
60 61 61
66
45
73
108
109
63
47
71
103
104
3
27
24
28
24
21
38
35
39
107
34 37
25
23 16
22
32
31 16
29
84
33
30
41
40
106
18
12
11
36
26
117
118
5
113
114
115
115
116
116
110
/ES /ES
/ES
/EW
/EW
6
8
8
77
111
111
112 112
112
112
112
112
112
119
120
2.2 EXTERIOR

7
KEH-P8800R,P8800R-W,P8850
1 Screw BSZ26P050FMC
2 Screw BSZ30P120FMC
3 Cord Assy See Contrast table(2)
4 Cord Assy CDE5863
5 Cord Assy See Contrast table(2)
6 Fuse(10A) See Contrast table(2)
7 Cap See Contrast table(2)
8 Resistor See Contrast table(2)
9 Case CNB2427
10 Holder CNC6798
11 Earth Terminal See Contrast table(2)
12 Cushion See Contrast table(2)
13 Panel See Contrast table(2)
14 Cap CNV2680
15 Screw BMZ30P230FMC
16 Screw BSZ30P050FMC
17 Screw CBA1447
18 Antenna Cable CDH1263
19 Holder CNC4963
20 Insulator CNM6137
21 Tuner Amp Unit See Contrast table(2)
22 Screw ASZ26P080FMC
23 Screw BMZ26P200FMC
24 Clamper CEF1007
25 Plug(CN901) CKM1278
26 Plug(CN851) CKS-786
27 Connector(CN801) CKS1532
28 Connector(CN902) CKS3124
29 Connector(CN101) CKS3408
30 Connector(CN651) CKS3568
31 Connector(CN681) See Contrast table(2)
32 Connector(CN351) CKS3606
33 Mini Jack(CN451) CKX1046
34 Holder CNC8171
35 Holder CNC8174
36 Holder CNC8176
37 Holder See Contrast table(2)
38 Transistor(Q803,921) 2SD2396
39 Heat Sink CNR1536
40 FM/AM Tuner Unit See Contrast table(2)
41 Holder CNC7532
42 Panel Assy CXB3581
43 Screw BMZ20P030FMC
44 Screw CBA1154
45 Screw BPZ20P060FMC
46 Door CAT2016
47 Screw CBA1060
48 Screw CBA1061
49 Screw CBA1082
50 Screw CBA1430
51 Screw CBA1454
52 Spring CBH2130
53 Spring CBH2251
54 Cord CDE5960
55 Cord CDE6003
56 Connector(CN9001) CKS3997
57 Roller CLA3583
58 Frame CNC8201
59 Arm CNC8293
60 Spacer CNM6155
61 Spacer CNM6156
62 Spacer CNM6419
63 PCB CNP5321
64 PCB CNP5355
65 Panel CNS5249
66 Lighting Conductor CNV5608
67 Cover CNV5610
68 Guide CNV5672
69 Guide CNV5696
70 Rack CNV5697
71 Gear CNV5698
72 Gear CNV5761
73 Torque Limiter Unit CNV5762
74 Holder CNV5763
75 Switch(S953) CSN1022
76 Arm Unit CXB3574
77 Frame Unit CXB3575
78 Holder Unit CXB3576
79 Bracket Unit CXB3577
80 Arm Unit CXB3866
81 Holder Unit CXB3867
82 Motor(M951) CXM1085
83 Chassis Unit See Contrast table(2)
84 Screw ISS26P055FUC
85 Detach Grille Assy See Contrast table(2)
86 Screw BPZ20P060FMC
87 Screw BPZ20P080FZK
88 Button(D) CAC5891
89 Button(EQ) See Contrast table(2)
90 Button(SOURCE) See Contrast table(2)
91 Button(1-6) See Contrast table(2)
92 Button( ) See Contrast table(2)
93 Button( ) See Contrast table(2)
94 Housing CNV5606
95 Keyboard Unit See Contrast table(2)
96 Connector(CN1902) CKS3995
97 Connector(CN1901) CKS3996
* 98 PCB CNP5508
99 OEL Module MXK8002
100 Grille Unit See Contrast table(2)
Mark No. Description Part No. Mark No. Description Part No.
(1) EXTERIOR SECTION PARTS LIST

8
KEH-P8800R,P8800R-W,P8850
101 Cover Unit See Contrast table(2)
102 Case Assy CXB3520
103 Remote Control Assy See Contrast table(2)
104 Battery Cover See Contrast table(2)
105 Cassette Mechanism ModuleEXK3990
106 Insulator See Contrast table(2)
107 IC(IC301) PAL005A
108 Switch(S952) CNS1022
109 Switch(S951) CNS1012
110 Terminal Cap See Contrast table(2)
111 Washer 2-1816-0035-D2-00
112 Washer 2-1821-0045-D2-00
113 Cord Assy See Contrast table(2)
114 Fuse(10A) See Contrast table(2)
115 Cap See Contrast table(2)
116 Resistor See Contrast table(2)
117 Remote Control Assy See Contrast table(2)
118 Battery Cover See Contrast table(2)
119 Cover See Contrast table(2)
120 Holder CNC7533
Mark No. Description Part No. Mark No. Description Part No.
(2) CONTRAST TABLE
KEH-P8800R/EW, KEH-P8800R-W/EW and KEH-P8850/ES are constructed same except for the following:
Part No.
Mark No. Description KEH-P8800R/EW KEH-P8800R-W/EW KEH-P8850/ES
3 Cord Assy Not used Not used CDE5853
5 Cord Assy CDE6007 CDE6007 Not used
6 Fuse(10A) CEK1136 CEK1136 Not used
7 Cap CNS1472 CNS1472 Not used
8 Resistor RS1/2PMF102J RS1/2PMF102J Not used
11 Earth Terminal CNC8019 CNC8019 CNC7358
12 Spacer CNM6482 CNM6482 CNM4870(Cushion)
13 Panel CNS5256 CSN5581 CNS5548
21 Tuner Amp Unit CWM6305 CWM6305 CWM6307
31 Connector(CN681) Not used Not used CKS3582
37 Holder CNC8172 CNC8172 CNC8178
40 FM/AM Tuner Unit CWE1500 CWE1500 CWE1501
83 Chassis Unit CXB3563 CXB4040 CXB3586
85 Detach Grille Assy CXB3291 CXB3981 CXB3293
89 Button(EQ) CNC5894 CNC6200 CAC5899
90 Button(SOURCE) CNC5892 CNC5892 CAC5901
91 Button(1-6) CNC5896 CNC6201 CAC5911
92 Button( ) CNC5890 CNC6199 CAC6126
93 Button( ) CNC5926 CNC5926 CAC6146
95 Keyboard Unit CWM6225 CWM6225 CWM6226
100 Grille Unit CXB3289 CXB4951 CXB3292
101 Cover Unit CXB4309 CXB4311 CXB4310
103 Remote Control Assy CZX3231 CZX3231 Not used
104 Cover CZN6410 CZN6410 Not used
106 Insulator CNM5967 CNM5967 Not used
110 Terminal Cap Not used Not used CKX-003
113 Cord Assy Not used Not used CDE5867
114 Fuse(10A) Not used Not used CEK1136
115 Cap Not used Not used CNS1472
116 Resistor Not used Not used RS1/2PMF102J
117 Remote Control Assy Not used Not used CXB3875
118 Battery Cover Not used Not used CNS5032
119 Cover Not used CNM4710 Not used

9
KEH-P8800R,P8800R-W,P8850

10
KEH-P8800R,P8800R-W,P8850
2.3 CASSETTE MECHANISM MODULE

11
KEH-P8800R,P8800R-W,P8850
1 Screw BSZ20P040FMC
2 Washer CBF1037
3 Washer CBF1038
4 Washer CBG1003
5 Deck Unit EWM1018
6 Screw EBA1028
7 Screw EBA1037
8 Spring EBH1531
9 Spring EBH1575
10 Plug(CN251) CKS3540
11 Spring EBH1515
12 Spring EBH1587
13 Spring EBH1517
14 Spring EBH1518
15 Spring EBH1519
16 Spring EBH1537
17 Cord EDD1020
18 Photo-interrupter(EGN2,3) EGN1006
19 Photo-interrupter(EGN1) EGN1005
20 Roller ENR1031
21 Shaft ELA1373
22 Pinch Roller ENV1518
23 Arm ENC1489
24 Arm ENC1397
25 Guide ENC1481
26 Holder ENC1417
27 Lever ENC1448
28 Arm ENC1488
29 Motor EXM1027
30 Belt ENT1027
31 Gear ENV1347
32 Collar ENV1508
33 Gear ENV1350
34 Flywheel ENV1500
35 Worm Gear ENV1439
36 Worm Wheel ENV1440
37 Gear ENR1037
38 Lever ENV1442
39 Arm ENV1525
40 Gathering PCB ENX1037
41 Gathering PCB ENX1042
42 Switch(S1,S2) ESG1004
43 Motor Unit(M2) EXA1485
44 Chassis Unit EXA1567
45 Pinch Holder ENV1485
46 Pinch Holder ENV1486
47 Reel Unit EXA1543
48 Head Base Unit EXA1457
49 Lever Unit EXA1438
50 Gear Unit EXA1545
51 Frame Unit EXA1458
52 Lever Unit EXA1439
53 Head Assy(HD1) EXA1506
54 Motor Unit(M1) EXA1490
55 Washer HBF-179
56 Screw BMZ20P022FMC
57 Spring EBH1545
58 Washer YE20FUC
59 Pinch Holder Unit EXA1529
60 Pinch Holder Unit EXA1528
Mark No. Description Part No. Mark No. Description Part No.
-CASSETTE MECHANISM MODULE SECTION PARTS LIST

12
KEH-P8800R,P8800R-W,P8850
1234
1234
A
KEH-P8800R,P8800R-W,P8850
3. BLOCK DIAGRAM AND SCHEMATIC DIAGRAM
3.1 BLOCK DIAGRAM
ANT1 TV ANT2 TV
RF TV
IC 3
BR9010FV
AM 2ND IF 450kHz
M
ADDRESS
DATA
IC 1903
RS-140
REMOTE CONTROL
SENSOR
OPT IN SWVDD
AVCCVDDREM
KYDT
DPDT
KEYAND
OEL MODULE
CONTROLLER
IC 1901
PD5471A
ILMD
ILB
SWVDD
1
4
5
7
11
2
9
8
12
9
8
6
2
11
4
5
KEY MATRIX
IC 1902
PD8051A
SWVDD
DATA ROM
25
4
9714
1
5
B.U
Q851
Q852
Q853
FLAP MOTOR
CONTROL
IC 851
BA6288FS
45
FIN
FIN
OUT1
OUT2
63
14 11
FLPOPN
FLPCLS
5
2
1
4
3
2
1
CN851
CN851
FCLSSW
SHELL
FOPNSW
BLUE
RED
WHITE
S951
CLOSE
S952
OPEN
DSWITCH PCB
M951
AUTOMATIC
FLAP MOTOR
ANT
GND2
CN451
1
2
ATUNER AMP UNIT
BFM/AM TUNER UNIT
27
28
FM FRONT END
Q3
Q201 Q204
AM RF
FM/AM 1ST IF 10.7MHz
T51 Q51 CF51 CF52 CF53
MIXER.IF AMP DET
IC 1
PML002A
38 39 42 44 46 63
32 19
46
6
21
18
LDET
COMP
34 33 41 44 11 12 13
69
70
54
78
65
71
75746157554533
35
22
22 10 14 12 15 16 8 13 2 3 4
CF202
VCC
VDD
VCC
VDD
DI/DO CE2 CK CE1 SDBW SL FMSD
PDIO
NL1 NL2
EEPROM
5
6
4
3
IC 2 PM4008A
FM MPX
IP-BUS
CONNECTOR
85
1
7
11
B.U
ASENBO
TX
RX
IPPW
1
8
2
5
6
IP-BUS DRIVER
IC 101
CA0008AM
BUS–
BUS+
BUS+L
BUS–L
Q402
Q101
Q102
NL2 NL2
Q153
TMUTE Q151
RMUTE
Q154 Q155
RDS
DECODER
IC 501
PM4009A
20
11 12
24
X501
3.648MHz
Q501
VDD
TMUTE
FM/AM
82
19
81
95 NL
FM/AM
ldet
tmute
SK
SD
SL
SDBW
tunpce@
TUNPCE
tunpck
TUNPDO
ASENBO
TX
RX1
IPPW
IN3_L
IN4+_L
IN4–_L
IN2_L
IN1_L
PEE
89
49
97
94
4
3
2
1
10
30
29
7
42
43
44
41
40
24
FLPPW
RIMUTE
stby
metal
LOAD
FLPPW 26
79
63
53
55
FLPOPN
34
FLPCLS
37
fopnsw
38 fclssw
40
42
Q913 B.U
VDD
Q911
B.U BACKUP BACKUP
GND
RL–
RL+
FL–
FL+
B.REM
ILL
ACC
ILL1
ACC1
MUTE
DOOR SW
TEL1
DOOR SW
BZ641
ALARM
BUZZER
ELECTRICAL VOLUME/
SOURCE SELECTOR
IC 203
PML004AF
Q641
SYSTEM
CONTROL
IC 601(2/2)
PD5495A
PD5496A
LEVEL L 92 3
74
73
23
TELIN 11
DRSYS 87
DRSENS 86
DRELAY
XOUT
XIN
76
DALMON 20
MUTE 27
DSENS
47
KYDT
36
DPDT
35
RESET
12
OEL PW
46
ILMPW
44
SWVDD
45
Frontout_L 10
PV in_L 2
Setout_L 1
Rearout_L 11
Preout_L 9
LEVEL DET.
IC 231
NJM2068MD
1
POWER AMP
IC 301
PAL005A
12
14
22 4
25
5
3
21
23
FL
RL–
RL+
FL–
FL+
MUTE STBY
B.REM
FL
B.U
B.U
DRELAY
DRSENS
DRSYS
TELIN
bsens
asens
isens
Q681
Q951
Q931
Q932
Q682 Q683
/ES
Q301 MUTE
7
11
16
14
18
9
IN1
RLI
FLI FLO
RLO
SWLO
IC 271
PA2028A
HIGH OUT Q353
Q355
Q351
CN351 FRONT
L CH
REAR
L CH
SUB
WOOFER
L CH
5
6
9
10
1
2
CKEYBOARD UNIT
CN1901 CN801
DSENS
ILL, DUAL DRIVE
EW ONLY
ILB
CN1902
OEL MODULE
MXK8002
18171-15
1113
X1901
33
34
32
RST
S1925
Q261
Q262
Q922
Q923
Q921
Q981
B.U
B.U
SYS+B
SYSPW
Q803
Q808
Q801
Q802
VDD
B.U
Q806
Q807
B.U
B.U
RESET
IC 961
S–80735ANDZI
VDD
12
Q962
LDET
M
M
S953
HALF LOADING
SWITCH
shell
B.U
SYS+B
FLPILM 43 Q805
B.U
SYSPW 22
1
2
CN681
MOSEN1
DLSEN1
MOSENS 5
DLSENS 6
Q684
Q685 DFS
Q1901–1906
ILM H:ORANGE
L:PURE GREEN
RL–
RL+
FL–
FL+
B.REM
9
11
10
12
4
1
2
3
5
8
7
POWER DRIVE
IC 681
TPD1018F ALARM 6
TUN5V B.U
15V REG.
IC 911
S-81250SGUP
CN901
FUSE
10A
61
EDECK UNIT
FPCB UNIT
GREEL PCB
AM RF AGC
DI/DO 25 24
VST
VCK
VDT
isens
asens
bsens
SYSTEM
CONTROL
IC 601(1/2)
PD5495A
PD5496A
PB HEAD
FWD
LCH
REV
LCH
M2 SUB
MOTOR
M1 MAIN
MOTOR
1
5
4
1
2
CN252
CN254
CN255
37
36
39
EQ AMP/DOLBY NR B
CN251
IC 251
CXA2560Q
2
10 9 8
17
19
18
5
2
1
4 3 18 17
7
5
VR301
VCC
Lch
MUTE
B.U
STBY
METAL
MECHANISM
DRIVER
4
3
9
20
19
8
11
4
3
9
20
19
8
11
LOAD
12357
1235
64
64
7
EGN1
MODE
SENSE
EGN3
REV END
SENSE
EGN2
FWD END
SENSE
S2
70µSS1 LOAD
/EW
RI MUTE
MTL
LOADSW 13
15
X601
10.000MHz
IC 351
PA2020A
ALARM SENSOR
DOOR LOCK
/ES
RR
+
RR
-
FR
+
FR
-
FL
+
FL
-
RL
+
RL
-
ACC
GND
ANT
ILL
BACK
UP
/EW
CN651
stby
CN101

13
KEH-P8800R,P8800R-W,P8850

S951
CSN1022
S952
CSN1012
CLOSE
OPEN
M951
AUTOMATIC
FLAP MOTOR
CXM1085
S953
CSN1022
HALF LOADING
SWITCH
NC
NC
NC
NC
NC
IC631
GND
TEST
NC
VCC
DO
DI
SK
CS
4
3
2
1
5
6
7
8
GND7
VDT
VCK
ROMCS
R631
1K
DI1
R632
47K
DO1
ROMCK
ROMCS
BFM/AM TUNER UNIT
CKEYBOA
UNIT
D
SWITCH PCB
E
DECK UNIT
CN251
IP-BUS
DRIVER
IP-BUS
TUNER
RDS DECODER
CASSETTE
MOTOR
DRIVE
E-VO
123
4
56
7
8
91011
FM(100%):-26dBs
AM(30%):-26dBs
FM(100%):-30dBs
AM(30%):-30dBs
(/EW)
(/ES)
}
}
TAPE:-9dBs
IP-BUS:+2.2dBs
FM(100%):-16.5dBs
AM(30%):-27dBs
FM(100%):-20.5dBs
AM(30%):-31dBs
(/EW)
(/ES)
}
}
IP-BUS:+2.2dBs
TAPE:-9dBs
14
KEH-P8800R,P8800R-W,P8850
1234
1234
D
C
B
A
3.2 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 size
SCH diagram
Guide page
Detailed page
A
A-a
D

: The power supply is shown with the marked box.
NC NC NC NC
NC
NC
ALARM SENSOR
DOOR LOCK
ATUNER AMP UNIT
OARD
CN1901
RR
+
RR
-
FR
+
FR
-
FL
+
FL
-
RL
+
RL
-
ACC
GND
ANT
ILL
BACK
UP
10A
CEK1136
GND
ILL
B REMOTE
ACC
ALARM
BACK UP
MUTE
RL-
FL-
RL+
FL+
RR-
FR-
RR+
FR+
DOOR SW
/EW
1K(1/2W)
1K(1/2W)
SWDVDD 5V OEL 9V
SYSTEM CONTROL
VOL
LEVEL INDICATOR
HIGH-OUT
RESET
BUZZER
DFS
SENSE
VDD 5V
SYS 8V
TUN 5V
POWER AMP
PRE. OUT
TUNER SIGNAL
IP-BUS SIGNAL
TAPE SIGNAL
TAPE,TUNER,IP-BUS SIGNAL
TAPE:-5.8dBs
TAPE:+20.2dBs
TAPE:+20.2dBs
15
KEH-P8800R,P8800R-W,P8850
5678
5678
D
C
B
A
A-b
A

NC
NC
IC631
GND
TEST NC VCC
DO
DI
SK CS
4
3 2 1
5
6 7 8
GND7
VDT
VCK
ROMCS
R631
1K
DI1
R632
47K
DO1
ROMCK
ROMCS
BFM/AM TUNER UNIT
IP-BUS
DRIVER
IP-BUS
TUNER
E-VOL
123
4
56
7
8
91011
FM(100%):-26dBs AM(30%):-26dBs FM(100%):-30dBs AM(30%):-30dBs
(/EW)
(/ES)
}
}
TAPE:-9dBs IP-BUS:+2.2dBs FM(100%):-16.5dBs AM(30%):-27dBs FM(100%):-20.5dBs AM(30%):-31dBs
(/EW)
(/ES)
}
}
IP-BUS:+2.2dBs
TAPE
16
KEH-P8800R,P8800R-W,P8850
1234
1234
D
C
B
A
A-a
A-a A-b
1
2
3

17
KEH-P8800R,P8800R-W,P8850
5678
5678
D
C
B
A
S951
CSN1022
S952
CSN1012
CLOSE
OPEN
M951
AUTOMATIC
FLAP MOTOR
CXM1085
S953
CSN1022
HALF LOADING
SWITCH
NC
NC NC
NC
NC
CKEYBOARD
UNIT
D
SWITCH PCB
CN1901
E
DECK UNIT
CN251
RDS DECODER
CASSETTE
MOTOR
DRIVE
SYSTEM CONT
TAPE:-9dBs
A-a
A-a A-b
D
4
5

18
1234
1234
D
C
B
A
A-a A-b
A-b
KEH-P8800R,P8800R-W,P8850
ATUNER AMP UNIT
LEVEL INDICATOR
HIGH-OUT
RESET
POWER AMP
PRE. OUT
TUNER SIGNAL
IP-BUS SIGNAL
TAPE SIGNAL TAPE,TUNER,IP-BUS SIGNAL
TAPE:-5.8dBs
TAPE:+20.2dBs
1
2
3

19
KEH-P8800R,P8800R-W,P8850
5678
5678
D
C
B
A
A-b
A-a A-b
: The power supply is shown with the marked box.
NC
NC
NC
NC
NC
NC
ALARM SENSOR
DOOR LOCK
D
1901
RR
+
RR
-
FR
+
FR
-
FL
+
FL
-
RL
+
RL
-
ACC
GND
ANT
ILL
BACK
UP
10A
CEK1136
GND
ILL
B REMOTE
ACC
ALARM
BACK UP
MUTE
RL- FL-
RL+
FL+
RR- FR-
RR+ FR+
DOOR SW
/EW
1K(1/2W)
1K(1/2W)
SWDVDD 5V OEL 9V
TEM CONTROL
BUZZER
DFS
SENSE
VDD 5V
SYS 8V
TUN 5V
TAPE:+20.2dBs
TAPE:+20.2dBs
4
5

Voltage of IC Terminals
KV1410(23)
KV1410(23)
Mark
None
F0
F65
F125
A0
A74
A125
Band
–
FM
FM
FM
AM
AM
AM
Input Level
–
0dBf
65dBf
125dBf
0dBµ
74dBµ
125dBµ
20
KEH-P8800R,P8800R-W,P8850
1234
1234
D
C
B
A
B
3.3 FM/AM TUNER UNIT
- KEH-P8800R/EW, KEH-P8800R-W/EW
B
A