SERVICE MANUAL

CD-P1250
COMPACT DISC PLAYER

CONTENTS
1 SPECIFICATIONS 2
2 EXPLODED VIEWS AND PARTS LIST 3
3 PC BOARDS AND PARTS LIST 7
4 INCLUDED ACCESSORIES 11

NOTES

PC boards shown are viewed from parts side.

The parts with no reference number or no parts number in the
exploded views are not supplied.
As regards the resistors and capacitors, refer to the circuit diagrams
contained in this manual.
£ Parts marked with this sign are safety critical components. They
must be replaced with identical components - refer to the appropriate
parts list and ensure exact replacement.
Parts of [ ] mark can be used only with the version designated.

Effective : May, 2002 S-0062A

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 1 SPECIFICATIONS
CD PLAYER GENERAL
Pickup: Power Requirements:
3-beam, semiconductor laser 120 V AC, 60Hz (U.S.A./Canada Model)
D/A Converter: 230 V AC, 50Hz (Europe/U.K. Model)
1 bit DAC Power Consumption:
Digital filter: 12 Watts (AC)
8-times oversampling Dimensions (W x H x D):
Frequency Response: 435 x 104 x 295mm
20 Hz ~ 20 kHz ±1.5dB Net Weight:
Total Harmonic Distortion: 3.6 kg
< 0.09 % (1 kHz) Standard Accessories:
Signal-to-Noise Ratio (S/N): Wireless Remote Control Unit (RC-853)
>85 dB (1 kHz) RCA pin-plug cord
Channel Separation: Battery (SUM-3, "AA", "R6" type) x 2 (Europe/U.K. Model)
>80 dB (1 kHz)
Output:
Analog; 2.0 Vrms (RCA) • Design and specifications are subject to change without notice.
Wow and Flutter:
Below measurable limit

SAFETY INFORMATION

This product has been designed and manufactured according to FDA

regulations "title 21, CFR, chapter 1, subchapter J, based on the Radiation 1 For U.S.A.
Control for Health and Safety Act of 1968", and is classified as a class 1
laser product. There is no hazardous invisible laser radiation during
operation because invisible laser radiation emitted inside of this product
is completely confined in the protective housings.
The label required in this regulation is shown 1.

OCAUTION
USE OF CONTROLS OR ADJUSTMENT OR PERFORMANCE OF
PROCEDURES OTHER THAN THOSE SPECIFIED HEREIN MAY RESULT IN
HAZARDOUS RADIATION EXPOSURE.

Optical pickup:
TYPE : SFP101NXR
MANUFACTURER : Sanyo Electric Co., Ltd.
LASER OUTPUT : Continuous Wave max. 5mW
WAVE LENGTH : 765-815nm

2
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 2 EXPLODED VIEWS AND PARTS LIST
EXPLODED VIEW-1

5120

51SD8

51SI1
5141

51SC2
51SC2
51SC2

4501

51SD4
51SB2
5142 5136
4505
5135
51SB2
5132

5133
5116

5104

3
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 EXPLODED VIEW-1

£
£
£
£

4
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 EXPLODED VIEW-2

5
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 EXPLODED VIEW-2 (CD93F8NDT)

6
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 3 PC BOARDS AND PARTS LIST
MAIN PCB

7
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 KEY PCB

DISPLAY PCB

HP PCB

8
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 POWER PCB (U.S.A.)

POWER PCB (Europe)

9
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 MAIN PCB ASSY DISPLAY PCB ASSY

H.P. PCB ASSY

£

POWER PCB ASSY

KEY PCB ASSY £

£
£

£
£
£

10
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 4 INCLUDED ACCESSORIES
INCLUDED ACCESSORIES

11
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 COMPACT DISC PLAYER
1 st Issue; April 2002
CD-P1250
8

CN1
Close SW 1 Up
GND 2
Open SW 3 Open
Tray Motor+ 4 R1
Tray Motor- 5
27k
PH5
R4
6.8k
Pu-In
7

TM+
100k

100k
100k

TM-
R9 10k
R10 10k
14
13
12
11
10
9
8

7
6
5
4
3
2
1

E1
R5

R6

R7

220u/10
SD OUT+
SD OUT-
MD OUT+
MD OUT-
LO F OUT
MUTE2 LOW POWVcc 5V

PREVcc 8V
MD IN
POWVcc 5V LO R OUT

SD IN
MUTE1 LOW
LO R IN
LO F IN
LO V CON

3 9k

18k
CN2
Spindle Motor + 1
Spindle Motor - 2 IC1

R13

R14
Sled Motor+ 3 BA5813FM VBG OUT
FD OUT+
TD OUT+

Sled Motor- 4
FD OUT-
TD OUT-

PU SW 5
VBG+
TD IN
FD IN

RVcc
BIAS
GND

GND
PU SW 6
PH6
15
16
17
18
19
20
21

22
23
24
25
26
27
28
6

R16 5.6k
Q1
R15 18k
E7 B1375
10u/16 +8V
C1
47n
R17 C3 C4 C6
39k
10n 10n 4.7n
C2
10n
R11 R23 R24 ATest C7
C10 10k 1k 1k
5

0.1u 4.7n
CN5
AGCO C24
E10 1 TP 1n
C5
CN6
100u/10 10n
CN4 1 EFM
TP
TP

1
HFO

75
74
73
72
71
70
69
68
67
66
65
64
63
62
61
60
59
58
57
56
55
54
53
52
51
E2 220u/10 C9

TSI
TSO
MD
A.Vdd

TEST1
TEST0
A.GND
ASY

DAC3
DAC2
DAC1
DAC0
EFM

D.Vdd
AGCO

TD
FD
ATEST

D.GND
TSCK
RFI

SD

PACK
C3T

TSTB
0.1u
76 AGCI C2D3 50
CN3 C21 R21 77 49
R18
RFO C2D2
1
12p 2.2k 78 EQ2 C2D1 48
C29 R22 79 47
Vcc 2 C8 EQ1 C1D2
E 3 47R 4p 22p 2.2k 80 RF- C1D1 46
D 4 81 A.GND D.GND 45
A 5 82 A PLCK 44
B 6 83 C MIRR/WFCK 43 Mirr/WFCK
C 7 84 B RFCK 42
F 8 85 D LOCK 41
4

Lock
GND 9 86 F D.Vdd 40
LD 10 87 E LIMIT 39
VR 11 88 A.Vdd IC3 C16M 38
MD 12 89 REFOUT D.GND 37
F+ 13 CN7 90 FE-
uPD63711
Tx 36
FE C27 91 35
T+ 14 1 FEO HOLD/WDCK Hold/WDCK
T- 15 56p 92 TE- LRCK 34
TP 33
F- 16 93 TEO LRCKIN
CN8 94 TE2 SCKO 32
TE C28 95 31
FFC16 1 C26
TEC SCKIN
27p 96 A.GND DOUT 30
TP 29
1n 97 PD DIN
98 LD FLAG 28 Flag
99 PN EMPH 27
C25 100 26

DA.GND
DA.GND
XTALEN
Q11 2SC2240BL A.Vdd D.Vdd

DA.Vdd

DA.Vdd
D.GND

X.GND
1n

REGC
ROUT
RFOK

D.Vdd

X.Vdd
LOUT

XTAL
XTAL
IC2 R25 E3 C11

SCK
RST
STB
Q2

SO

R+
D5

A0

L+
R-
7805 470R

SI

L-
1 in out 2 Q12 E4 220u/10 0.1u
1SS133

10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
220u/10

1
2
3
4
5
6
7
8
9
MAIN PCB

G
2SA933
+5V
Q13 2SC2240BL

3
E11

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R27 R28

3
2SC2240BL
10R 22k C12 10n X1
R53 16.9344MHz
+9V 100u/10
1.8k +5V E14
D6 E17 22u
Sig-R C22 C23
10V 220u CN9
R32 C32 12p 12p
19

CD-P1250
20k 330p
R26
18
17 R31 Sig-L
10R 1/4W S101 100R R30 R29 22k
16 100R
D1 D2 15
14

To uCom / Key PCB

IC4 1.3A 1.3A R12
13 10k
7808
2 1 12 TM+ R33
out in C19 C20 11 TM- SW DIP-4 4.7k
10 Driver-M
0.1u 0.1u
9 Pu-In

G
+8V D3 D4
E5 1.3A
8 Open
1.3A
220u/10 7 Up

3
12V-AC1 6 A-Mute
CN10
5
Con2
4
E13 3
4700u/25
1 2

SCHEMATIC DIAGRAM
2 1

They must always be replaced with identical components-refer

3. £Parts marked with this sign are safety critical components.
CON19
To Power PCB

1
2
3
4
5
6
7

to the appropriate parts list and ensure exact replacement.

C13 180p +9V +5V +5V

1. Resistor values are in ohms (k=kilo-ohms, M=megohms).

E9
C30 R3 R43 CN12 D7
47k CON7
R52 10k 27k

2. Capacitor values are in microfarads (p=picofarads).

To Headphone PCB 10u/16 C34 1.3A
C33
1n R34 22k R46 3.3k E12 Q14 R55
Sig-L Q3 0.1u E6
Q6 +8V 100k
OP1A 220u/10

2200u/10V
Q5 1u E16
2200u/10 R8 10k
R35 22k R44 R45 C14
JRC4558 100k 100k 560p 2SA933 R38 Q8 2SA933
2SC2240BL 2SC2240BL
C17 R40 E15 3.3k
R19 47R 1u 1.5k R54
CN11 3.3k
R41 2SD1936
R20 47R C16 R42 2200u/10V E18
LCH 1 22R
1u 1.5k R48 R49
RCH 2 100k 100k R39
3 Q7 A-Mute
R36 C15 3.3k 1u
4 560p
22k C35
PH5 Q4 2SC2240BL +8V Sig-R
2SC2240BL C31 R37 OP1B R47 3.3k
22k R2 R50 1u
JRC4558
47k
+8V 27k
1n E8

1
RCA1A R51 10k
RCA2

NOTES:
10u/16
R L C18 180p
RCA1B
RCA2

D
B
A

E
 SCHEMATIC DIAGRAM CD-P1250 DISPLAY PCB, KEY PCB, HP PCB, POWER PCB
1 2 3 4 5 6 7 8

R101
100k

R100

A U100
100k
C100 22p
PST600
1 Vdd RST 3 X100
GND

Vdd 5MHz
C102 Key Matrix:
0.1u C103
C101 22p
2

47k 47k 47k 0.1u KS0 not used

KS1 not used

R116

R117

R118
12V-AC2 CN101 KS2 KR0 = Stop
66A-Mute
64L-Pitch 19 KS2 KR1 = Pause
65L-Cue

61PU-In
62Open
63Up 18 KS2 KR2 = Time (Display
47k

47k

17 Vdd U101 Mode)

80
79
78
77
76
75
74
73
72
71
70
69
68
67

L1 L2 L3 12V-AC2
LAMP 12V LAMP 12V LAMP 12V Vdd 16 KS2 KR3 = Play
15 GP1U281X KS2 KR4 = F. Skip
12V-AC1
R114

R113

14 KS2 KR5 = B. Skip

P46
P47
P00
P01
P02
P03
Reset
V-DD0
IC
XT1
XT2
V-SS0
P40/KR0
P41/KR1
P42/KR2
P43/KR3
P44/KR4
P45/KR5

X1
X2

13 KS2 KR6 = Tray open / close

IR-Signal
12V-AC1 12V-AC1
P-Con 12 E100
47k

1 60 11 KS3 KR0 = F. Scan

GND
12V-AC2 V-DD1 P50

Vdd
2 59 Driver Mute 10 KS3 KR1 = B. Scan
3 BIAS P51 58 TM- 9 100u KS3 KR2 = Random Play
CN1 CN100 4 V-LC0 P52 57 TM+ 8 KS3 KR3 = A-B Repeat
C104
V-LC1 P53
R115

B 1 1 5 56 /SCK 7 KS3 KR4 = Repeat (one / all)

3
2
1
2 2 6 V-LC2 P20/SCK/ASCK 55 /SI 6 KS3 KR5 = Programm
LCD1 V-SS1 P21/SO/TxD
COM1 1 3 3 7 COM-0 P22/SI/RxD 54 /S0 5 0.1u

COM2 2 4 4 8 COM-1 P23/CMPTout/TO2 53 A0 4

COM3 3 5 5 9 COM-2 P24/INTP0/TI0 52 STB 3
COM4 4 6 6 10 COM-3 P25/INTP1/TI1 51 RFok 2
16-12-8-4 5 7 7 11 S0 P26/INTP2/TO5 50 Reset 1 Vdd S101 S107
15-11-7-3 6 8 8 12 S1 P27/INTP3/CPT5 49 Remcon Stop FScan
14-10-6-2 7 9 9 13 S2 IC1
AV-SS 48 Flex-PCB19

13-9-5-1 8 10 10 14 S3 UPD789046AGC
P60/ANI0/AMPIN0 47 KR0 D100 1SS133 S102 S108
Space-Intro-Mem-Pro 9 11 11 15 S4 P61/ANI1/CMPREF0 46 KR1 Pause BScan
6C-6G-6B-6A 10 12 12 16 S5 P62/ANI2 45 KR2 D101 1SS133

6D-6E-6F 11 13 13 17 S6 P63/ANI3 44 KR3 S103 S109

5C-5G-5B-5A 12 14 14 18 S7 P64/ANI4 43 KR4 D102 1SS133
Time Rand
5D-5E-5F-COL 13 15 15 19 S8 P65/ANI5 42 KR5
14 16 16 20 41 KR6 D103 1SS133 S104 S110
P93/S16
P92/S17
P91/S18
P90/S19
P87/S20
P86/S21
P85/S22
P84/S23
P83/S24
P82/S25
P81/S26
P80/S27

4C-4G-4B-4A S9 P66/ANI6
AV-Ref

15 17 17
AV-DD

4D-4E-4F-Shuffle 16 18 18
Play A-B
D104 1SS133
S10
S11
S12
S13
S14
S15

3C-3G-3B-3A 17 19 19 S105 S111

3D-3E-3F 18 20 20 1SS133
-- -Minus-B-A D105 F.Skip Rep
2C-2G-2B-2A 19 21 21
20 22 22 D106 1SS133 S106 S112
21
22
23
24
25
26
27
28
29
30
31
32
33
34
KS3 35
KS2 36
KS1 37
KS0 38
39
40

2D-2E-2F-All 21 23 23
1C-1G-1B-1A 22 24 24
B.Skip Prog
R104 R107 R108 R109 R110 R111 R112
1D-1E-1F-1(L) 23 25 25
C Remain-S2-S1-Repeat
47k 47k 47k 47k 47k 47k 47k S100
LCD-1250 Tray
CON25 CON25

R102 R103
R105 R106 100k 100k
47k 47k

DISPLAY PCB Vdd KEY PCB

HP PCB
D

POWER PCB (U.S.A)

E POWER PCB (Europe)

INSTRUCTIONS FOR SERVICE PERSONNEL

BEFORE RETURNING APPLIANCE TO THE CUSTOMER, MAKE LEAKAGE-
CURRENT OR RESISTANCE MEASUREMENTS TO DETERMINE THAT EXPOSED
NOTES:
1. Resistor values are in ohms (k=kilo-ohms, M=megohms).
2. Capacitor values are in microfarads (p=picofarads).
3. £Parts marked with this sign are safety critical components.
CD-P1250
PARTS ARE ACCEPTABLY INSULATED FROM THE SUPPLY CIRCUIT.
They must always be replaced with identical components-refer
to the appropriate parts list and ensure exact replacement. COMPACT DISC PLAYER
1 st Issue; April 2002

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