Pioneer CDR-850 Service manual
THIS MANUAL IS APPLICABLE TO THE
FOLLOWING MODEL(S) AND TYPE(S).
Type
KU/CA AC120V
MY AC220-230V
Model
CDR-850
Power Requirement Remarks
FOR U.S. MODELS
NECESSARY INFORMATION FOR DHHS
RULES MARKED ON THE REAR BASE AND ON
THE TOP OF CD MECHANISM AS BELOW.
DANGER – LASER RADIA TION WHEN OPEN.
AVOID DIRECT EXPOSURE TO BEAM.
CDR-850
1. SAFETY INFORMATION
This service manual is intended for qualified service technicians ; it is not meant for the casual do-ityourselfer. 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.
WARNING
This product contains lead in solder and certain electrical parts contain chemicals which are known to the state of California to cause
cancer, birth defects or other reproductive harm.
Health & Safety Code Section 25249.6 – Proposition 65
NOTICE
(FOR CANADIAN MODEL ONLY)
Fuse symbols (fast operating fuse) and/or (slow operating fuse) on PCB indicate that replacement parts must
be of identical designation.
REMARQUE
(POUR MODÈLE CANADIEN SEULEMENT)
Les symboles de fusible (fusible de type rapide) et/ou (fusible de type lent) sur CCI indiquent que les pièces
de remplacement doivent avoir la même désignation.
(FOR USA MODEL ONLY)
1. SAFETY PRECAUTIONS
The following check should be performed for the
continued protection of the customer and service
technician.
LEAKAGE CURRENT CHECK
Measure leakage current to a known earth ground (water
pipe, conduit, etc.) by connecting a leakage current tester
such as Simpson Model 229-2 or equivalent between the
earth ground and all exposed metal parts of the appliance
(input/output terminals, screwheads, metal overlays, control
shaft, etc.). Plug the AC line cord of the appliance directly
into a 120V AC 60Hz outlet and turn the AC power switch
on. Any current measured must not exceed 0.5mA.
Reading should
not be above
0.5mA
Earth
ground
Device
under
test
Also test with
plug reversed
(Using AC adapter
plug as required)
Leakage
current
tester
Test all
exposed metal
surfaces
ANY MEASUREMENTS NOT WITHIN THE LIMITS
OUTLINED ABOVE ARE INDICATIVE OF A POTENTIAL
SHOCK HAZARD AND MUST BE CORRECTED BEFORE
RETURNING THE APPLIANCE TO THE CUSTOMER.
2. PRODUCT SAFETY NOTICE
Many electrical and mechanical parts in the appliance
have special safety related characteristics. These are
often not evident from visual inspection nor the protection
afforded by them necessarily can be obtained by using
replacement components rated for voltage, wattage, etc.
Replacement parts which have these special safety
characteristics are identified in this Service Manual.
Electrical components having such features are identified
by marking with a
in this Service Manual.
The use of a substitute replacement component which does
not have the same safety characteristics as the PIONEER
recommended replacement one, shown in the parts list in
this Service Manual, may create shock, fire, or other hazards.
Product Safety is continuously under review and new
instructions are issued from time to time. For the latest
information, always consult the current PIONEER Service
Manual. A subscription to, or additional copies of, PIONEER
Service Manual may be obtained at a nominal charge from
PIONEER.
on the schematics and on the parts list
AC Leakage Test
2
LABEL CHECK
KU/CA type
Printed on Rear Panel
Printed on Rear Panel
MY Type
MY Type MY Type
CDR-850
THIS PIONEER APPARATUS CONTAINS
LASER OF CLASS ΙΙΙ b.
SERVICING OPERATION OF THE APPARATUS
SHOULD BE DONE BY A SPECIALLY
INSTRUTED PERSON.
LASER DIODE CHARACTERISTICS
MAXIMUM OUTPUT POWER: 23 mW
WAVELENGTH: 778 – 787 nm
IMPORTANT
CONTENTS
1. SAFETY INFORMATION
2. EXPLODED VIEWS AND PARTS LIST
3. SCHEMATIC DIAGRAM
4. PCB CONNECTION DIAGRAM
5. PCB PARTS LIST
6. ADJUSTMENT
...............................................
....................................................
......................................
................
.....................................
..........................
Additional Laser Caution
1. Laser Interlock Mechanism
The position of the switch (S601) for detecting loading
state is detected by the system microprocessor, and the
design prevents laser diode oscillation when the switch
(S601) is not on CLMP terminal side (CLMP signal is OFF
or high level.). Thus, the interlock will no longer function if
the switch (S601) is deliberately set to CLMP terminal side
(low level).
The interlock also does not function in the test mode ∗.
Laser diode oscillation will continue, if pin 1 of M51593FP
(IC101) on the PRE-AMP BOARD ASSY mounted on the
pickup assembly is connected to GND, or pin 19 is
connected to low level (ON), or else the terminals of Q101
are shorted to each other (fault condition).
2. When the cover is opened with the servo mechanism
block removed and turned over, close viewing of the
objective lens with the naked eye will cause exposure to a
Class 1 laser beam.
∗ Refer to page 53.
2
7. GENERAL INFORMATION
4
7.1 PARTS
10
7.1.1 IC
34
7.1.2 DISPLAY
48
7.2 BLOCK DIAGRAM
53
7.3 DIAGNOSIS
.........................................................
...........................................................
................................................
................................................
................................
......................................
8. PANEL FACILITIES AND SPECIFICATIONS
....
59
59
59
74
76
78
83
3
CDR-850
2. EXPLODED VIEWS AND PARTS LIST
NOTES:• Parts marked by "NSP" are generally unavailable because they are not in our Master Spare Parts List.
2.1 PACKING
The mark found on some component parts indicates the importance of the safety factor of the part.
•
Therefore, when replacing, be sure to use parts of identical designation.
Screws adjacent to mark on the product are used for disassembly.
•
12 (2/3)
12 (1/3)
13
2
(1) PACKING PARTS LIST
11 (1/2)
10
12 (3/3)
11 (2/2)
9
6
8
3
7
1
17
14
5
15
16
4
Mark No. Description Part No.
1 AC Power Cord See Contrast table (2)
2 Bar Code Label MY See Contrast table (2)
3 Audio Cable (L=1.2m) PDE1003
4 Operating Instructions PRE1282
(English/French/Spanish)
5 Caution PRM1045
6 Remote Control Unit PWW1122
(R-800)
7 Battery Cover PZN1010
NSP 8 Dry Cell Battery (R03,AAA) VEM-022
9 Polyethylene Bag RHL1024
10 Packing Case PHG2365
Mark No. Description Part No.
11 Protector (F) PHA1341
12 Protector (R) PHA1342
13 Seat RHX1006
NSP 14 CDR Disc PEX1007
NSP 15 Registration Card See Contrast table (2)
NSP 16 Brochure PEX1009
17 Polystylene cover PHL1067
(2) CONTRAST TABLE
CDR-850/MY and KU/CA are constructed the same except for the following :
Mark No. Symbol and Description
1 AC Power Cord DDG1072 DDG1028
2 Bar Code Label MY PRW1531 Not used
2 Bar Code Label KU Not used PRW1530
NSP 15
Registration Card PEX1010 PEX1008
4
CDR-850/MY CDR-850/KU/CA
Part No.
Remarks
CDR-850
2.2 EXTERIOR SECTION
52
KU/CA
Type only
40
28
Refer to "2.4 LOADING
MECHANISM ASSY".
No Supplied
23
33
18
33
23
Part
11
31
C
B
D
34
33
59
14
3
45
42
39
KU/CA
Type only
8
12
I
7
5
60
10
E
48
12
J
50
14
4
12
H
11
25
24
D
KU/CA
43
Type only
56
11
15
K
47
20
12
34
2
A
24
9
J
11
1
13
49
11
C
I
B
F
11
51
53
46
52
41
11
K
34
A
IC308
19
6
G
L
34
14
22
L
26
57
Accessories for
the INPUT ASSY
58
36
30
Refer to "2.3 FRONT
PANEL SECTION".
27
55
37
MY
38
Type only
29
E
F
H
G
30
35
30
35
11
13
21
55
16
17
30
5
CDR-850
(1) EXTERIOR SECTION PARTS LIST
Mark No. Description Part No. Mark No. Description Part No.
NSP 1 SERVO DIGITAL Assy See Contrast table (2)
2 AUDIO Assy See Contrast table (2)
3 POWER Assy See Contrast table (2)
NSP 4 TRANS Assy PWZ3752
5 Jumper Wire (J) D20PYY0335E
6 Connector Assy (8P) PDE1303
7 Connector Assy PG05KK-E10
8 Connector Assy PG09KK-E35
9 Power Transformer See Contrast table (2)
10 Fuse (FU1) See Contrast table (2)
11 Screw (Steel) ABA1011
12 Screw (Steel) ABA1207
NSP 13 PCB Mould AMR1525
NSP 14 Cord Stopper DNF1128
15 Bonnet PYY1267
NSP 16 Under Base PNA2484
17 Rear Base See Contrast table (2)
NSP 18 Mecha Base PNB1591
19 Terminal Screw AKE-031
20 Connector Assy (8P) PDE1304
21 Insulator AMR7198
NSP 22 Cap VEC1810
23 Cord Clamper RNH-184
24 Screw RBA1132
NSP 25 Lead Wire Unit PDF1195
26 Connector Assy PF03PP-C16
27 Power Button PAC1918
28 Tray Panel PNW2902
29 Screw BBZ30P080FCC
30 Screw IBZ30P060FCC
31 Screw BBZ30P100FCC
32 • • • • •
33 Screw PBA1112
34 Screw IBZ30P180FCC
35 Binder PEC-107
36 Black Label PRW1470
37 Caution Label HE See Contrast table (2)
38 Caution Label See Contrast table (2)
39 65 Label See Contrast table (2)
NSP 40 Laser Caution Label See Contrast table (2)
41 INPUT Assy See Contrast table (2)
42 FCC Label See Contrast table (2)
43 DOC Label See Contrast table (2)
44 • • • • •
45 Rack Angle L PNB1604
46 Rack Angle R PNB1605
NSP 47 I/O Angle PNB1607
NSP 48 Transformer Cover PNM1338
NSP 49 Card Spacer QEC1012
50 Screw RBA1128
51 Screw BBZ40P080FCC
52 Screw BBZ40P140FZK
53 Screw IBP30P090FCC
54 • • • • •
55 Screw IBZ30P080FZK
56 Screw IBZ30P200FMC
57 Screw PMZ26P040FMC
58 Screw PMZ30P060FCC
59 Rivet RBM-003
60 Fuse Cover PNM1343
(2) CONTRAST TABLE
CDR-850/MY and KU/CA are constructed the same except for the following :
Mark No. Symbol and Description
NSP 1 SERVO DIGITAL Assy PWM2219 PWM2220
2 AUDIO Assy PWZ3933 PWZ3934
3 POWER Assy PWZ3937 PWZ3938
9 Power Transformer PTT1346 PTT1355
10 Fuse (FU1 : T500mA) AEK1051 Not used
10 Fuse (FU1 : 1A) Not used REK1075
17 Rear Base PNA2488 PNA2482
37 Caution Label HE PRW1233 Not used
38 Caution Label VRW1094 Not used
39 65 Label Not used ARW7050
NSP 40 Laser Caution Label Not used PRW1516
41 INPUT Assy PWZ3929 PWZ3930
42 FCC Label Not used VRW1725
43 DOC Label Not used VRW1726
CDR-850/MY CDR-850/KU/CA
6
Part No.
Remarks
2.3 FRONT PANEL SECTION
CDR-850
23
16
12
8
23
7
17
15
13
14
Accessories for the
VR ASSY.
1
19
20
11
A
21
23
26
6
4
10
9
18
22
A
5
2
23
3
FRONT PANEL SECTION PARTS LIST
•
Mark No. Description Part No. Mark No. Description Part No.
NSP 2 HEADPHONE Assy PWZ3715
1 FUNCTION Assy PYY1266
NSP 3 VR Assy PWZ3719
4 22P F•F•C/60V PDD1190
5 Screw With Washer ABA1005
6 HP Knob H PAC1944
7 Mode Button H PAC1945
8 Manual Button H(L) PAC1946
9 REC Button H PAC1948
10 Cord Clamper RNH-184
11 Manual Button H(R) PAC1947
12 VOL Knob Assy PXA1621
13 REC Knob H L PAC1942
14 REC Knob H R PAC1943
15 FL Sheet PAM1762
16 Display Window H PAM1794
17 LED Lens PNW2745
18 REC Ring PNW2795
19 Lens PNW2796
20 Sub Panel PNW2797
21 Front Panel H PNW2903
22 Play Button H PAC1950
23 Screw PPZ30P100FMC
24 • • • • •
25 • • • • •
26 IC (EEPROM) PYY1250
7
CDR-850
2.4 LOADING MECHANISM ASSY
• Bottom View
20
9
26
24
23
30
26
27
A
13
12
Loading Base
25
7
21
6
4
3
28
A
15
14
19
1
29
22
5
2
31
5
18
11
16
17
8
LOADING MECHANISM ASSY PARTS LIST
•
10
Mark No. Description Part No. Mark No. Description Part No.
NSP 2 Earth Lead Unit PDF1088
1 32P F•F•C/30V PDD1187
3 Connector Assy PG02KK-E35
4 DC Motor PXM1027
5 Screw DBA1006
6 Motor Pulley PNW1634
7 Screw VBA1055
8 Tray Stopper Spring VBH1277
9 Rubber Belt VEB1260
10 Loading Base VNL1730
11 Tray VNL1731
12 Gear Pulley VNL1733
13 Loading Gear VNL1734
14 Drive Gear VNL1735
15 Drive Cam VNL1736
NSP 18 CD-RW SERVO MECH Assy PXA1609
NSP 22 Loading Mechanism Assy PXA1608
NSP 27 LOADING A Assy PWZ3727
NSP 28 LOADING B Assy PWZ3728
16 Lock Plate VNL1820
17 Tray Stopper VNL1739
19 Screw BBZ26P040FMC
20 Screw IPZ20P080FMC
21 Loading Motor Assy VXX2505
23 Clamper Plate VNE2068
24 Bridge VNE2069
25 Clamper VNL1738
26 Screw IPZ26P060FMC
29 Tray Holder PNM1341
30 Spacer PNM1334
31 Stopper DNH2076
8
2.5 SERVO MECHANISM ASSY
CDR-850
22
25
15
20
10
9
7
23
2
3
26
11
16
19
18
• Bottom View
SERVO MECH ASSY
14
6
13
Carriage Base S
24
22
12
How to Install the Disc Table
1
1
4
21
5
Use nippers or other tool to cut the two sections marked A in figure
2
While supporting the spindle motor shaft with the stopper, put spacer on
top of the carriage base, and stick the disc table on top (takes about 9kg
pressure). Take off the spacer.
1
A
A
Spacer
2
Spacer setting
Position
(Pressure of about 9kg)
Disc table Assy
1
.
8
SERVO MECHANISM ASSY PARTS LIST
•
Spacer
Servo Base
Spacer
Spindle
motor
OK NG
Stopper
Mark No. Description Part No. Mark No. Description Part No.
NSP 1 SERVO MECH Assy PWZ3758
2 D.C.mortor Assy PEA1235
NSP 3 DC Motor PXM1042
4 Float Rubber A AEB7063
5 Float Rubber B AEB7066
NSP 6 Rack Spring DBH1285
NSP 7 Mirror Sheet PNM1325
8 Servo Base PNW2853
9 Pinion Gear PNW2854
10 Gear A PNW2855
11 Gear B PNW2856
12 Gear C PNW2857
13 Rack PNW2858
14 Rack Stopper PNW2859
NSP 15 Disc Table PNW2860
NSP 20 Magnet VYM1024
16 Carriage Base S PNW2874
17 • • • • •
18 Guide Bar VLL1488
19 Sub Guide Bar VLL1489
21 CD-R Pickup PEA1351
22 Screw IPZ20P060FMC
23 Screw PMZ20P030FMC
24 Screw JGZ17P030FMC
25 Disc Table Assy PEA1349
26 Carriage Motor Assy PEA1350
11mm
2.8mm
Carriage
Base
PCB
9
1
23
4
CDR-850
3. SCHEMATIC DIAGRAM
3.1 OVERALL CONNECTIONS, LOADING A, B, and SERVO MECH ASSEMBLIES
A
CD-R PICUP ASSY
PEA1351
B
C
SERVO
MECH ASSY
(PWZ3758)
PEA1350
PEA1235
D
SERVO DIGITAL ASSY
(PWM2219 : MY)
(PWM2220 : KU/CA)
D
1/6
D
6/6
B
LOADING B
C
ASSY
(PWZ3728)
VXX2505
PC651
NJL5803K–F1
LOADING A ASSY
A
(PWZ3727)
D
LOADING MECH ASSY (PXA1608)
10
A
B C
1234
FUNCTION ASSY
J
(PWZ3699)
5
678
CDR-850
Note : When ordering service parts, be sure to refer to "EXPLODED VIEWS and P AR TS LIST" or "PCB PARTS LIST".
F
HEADPHONE
ASSY
E
E
AUDIO ASSY
(PWZ3933: MY)
(PWZ3934: KU/CA)
1/2,
E
2/2
(PWZ3715)
A
B
H
TRANS ASSY
I
(PWZ3752)
POWER ASSY
(PWZ3937: MY)
(PWZ3938: KU/CA)
POWER TRANSFORMER
AC POWER CORD
DDG1072 : MY TYPE
DDG1028 : KU/CA TYPE
K
INPUT ASSY
(PWZ3929: MY)
(PWZ3930: KU/CA)
VR ASSY
G
(PWZ3719)
C
D
11
5
6
7
8
1
CDR-850
3.2 SERVO DIGITAL ASSY(1/6)
A
2/6
D
B
23
5/6
D
4
4/6
D
2/6
D
ATIP DECODER
C
3/6
D
D
12
1/6
D
1234
5
678
CDR-850
8BIT LATCH
MECH.CONTROL MICOM BLOCK
D
SERVO DIGITAL ASSY(1/6)
1/6
(PWM2219 : MY)
(PWM2220 : KU/CA)
•
MECH. CONTROL MICOM BLOCK
D
A
4/6
B
C
6/6
D
CN701
J
1/6
D
5
6
7
8
13
D
1
23
CDR-850
3.3 SERVO DIGITAL(2/6) and PICKUP ASSEMBLIES
4
D
A
CD-R PICUP ASSY
PEA1351
B
SERVO DIGITAL ASSY(2/6)
2/6
(PWM2219 : MY)
(PWM2220 : KU/CA)
•
RF PROCESSOR BLOCK
C
D
14
2/6
D
1234
5
678
CDR-850
A
3/6
D
5/6
D
B
MY TYPE
ONLY
D
4/6
D
D
D
3/6
1/6
6/6
C
D
2/6
D
5
6
7
8
15
1
CDR-850
3.4 SERVO DIGITAL ASSY(3/6)
A
2/6
D
1/6
D
B
23
4
5/6
D
C
2/6
D
D
16
3/6
D
1234
5
678
CDR-850
A
1/6
D
D
SERVO DIGITAL ASSY(3/6)
3/6
(PWM2219 : MY)
(PWM2220 : KU/CA)
•
SERVO BLOCK
D
D
6/6
1/6
D
2/6
B
CDR SERVO AMP
5
1/6
D
3/6
D
6
7
8
17
C
D
1
CDR-850
3.5 SERVO DIGITAL ASSY(4/6)
6/6
D
A
B
23
4
INPUT
CN3002
K
C
INPUT
D
1/6
18
4/6
D
1234
D
5
678
CDR-850
A
D
SERVO DIGITAL ASSY(4/6)
4/6
(PWM2219 : MY)
(PWM2220 : KU/CA)
•
DIGITAL BLOCK
OUTPUT
OUTPUT
B
C
1/2
E
J801
D
5/6
D
5
6
7
D
4/6
8
19
1
CDR-850
3.6 SERVO DIGITAL ASSY(5/6)
3/6
D
A
B
23
4
CN501
A
CN601
C
C
D
SERVO DIGITAL ASSY(5/6)
5/6
(PWM2219 : MY)
(PWM2220 : KU/CA)
•
DECODER BLOCK
D
2/6
D
20
5/6
D
1234
5
6
678
CDR-850
1/6
D
D
1/6
A
B
H
J21
D
4/
C
D
5/6
D
5
6
7
8
21
1
23
CDR-850
3.7 SERVO DIGITAL ASSY(6/6)
4
A
D
B
4/6
D
SERVO DIGITAL ASSY(6/6)
6/6
(PWM2219 : MY)
(PWM2220 : KU/CA)
•
STRATEGY BLOCK
KU/CA TYPE
ONLY
D
2/6
C
D
R1323 : 0 (MY TYPE)
L323 : QTL1015 (KU/CA TYPE)
4/6
D
1/6
D
22
6/6
D
1234
D
D
D
2/6
4/6
3/6
CDR-850
23
1
23
CDR-850
3.8 AUDIO(1/2) and HEADPHONE ASSEMBLIES
A
CN301
4/6
D
4
D/A CONVERTER
B
CN8101
E
2/2
K
C
J31
H
D
24
1/2
E
1234
5
678
CDR-850
E
AUDIO ASSY(1/2)
1/2
(PWZ3933 : MY)
(PWZ3934 : KU/CA)
• D/A BLOCK
CN8101,
CN8102
K
A
B
HEADPHONE ASSY
F
(PWZ3715)
: AUDIO SIGNAL
ROUTE
C
D
1/2
E
5
6
7
F
8
25
1
23
CDR-850
3.9 AUDIO(2/2) and VR ASSEMBLIES
A
4
B
C
CN8004
K
VR ASSY
G
(PWZ3719)
CN8005
K
D
26
2/2
E
1234
G
5
678
CDR-850
A
: AUDIO SIGNAL ROUTE
A/D CONVERTER
E
1/2
E
AUDIO ASSY(2/2)
2/2
(PWZ3933 : MY)
(PWZ3934 : KU/CA)
•
A/D BLOCK
1/2
E
B
C
D
2/2
E
5
6
7
8
27
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