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 RADIATION WHEN OPEN.
AVOID DIRECT EXPOSURE TO BEAM.
THIS MANUAL IS APPLICABLE TO THE
FOLLOWING MODEL(S) AND TYPE(S).
Type
Model
Power Requirement
Remarks
CDR-850
KU/CA
AC120V
MY
AC220-230V
2
CDR-850
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.
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.
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
on the schematics and on the parts list
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.
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.
(FOR USA MODEL ONLY)
Leakage
current
tester
Reading should
not be above
0.5mA
Device
under
test
Test all
exposed metal
surfaces
Also test with
plug reversed
(Using AC adapter
plug as required)
Earth
ground
AC Leakage Test
3
CDR-850
IMPORTANT
THIS PIONEER APPARATUS CONTAINS
LASER OF CLASS
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
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.
Additional Laser Caution
Refer to page 53.
LABEL CHECK
KU/CA type
Printed on Rear Panel
Printed on Rear Panel
MY Type
MY Type
MY Type
1. SAFETY INFORMATION ...................................... 2
2. EXPLODED VIEWS AND PARTS LIST ................ 4
3. SCHEMATIC DIAGRAM ..................................... 10
4. PCB CONNECTION DIAGRAM .......................... 34
5. PCB PARTS LIST ............................................... 48
6. ADJUSTMENT .................................................... 53
CONTENTS
7. GENERAL INFORMATION ................................ 59
7.1 PARTS ......................................................... 59
7.1.1 IC ........................................................... 59
7.1.2 DISPLAY ................................................ 74
7.2 BLOCK DIAGRAM ...................................... 76
7.3 DIAGNOSIS ................................................ 78
8. PANEL FACILITIES AND SPECIFICATIONS .... 83
4
CDR-850
4
10
8
15
2
1
7
6
9
3
13
11 (1/2)
12 (1/3)
12 (2/3)
11 (2/2)
12 (3/3)
17
14
5
16
2.1 PACKING
(1) PACKING PARTS LIST
Mark No.
Description
Part No.
2. EXPLODED VIEWS AND PARTS LIST
NOTES:
· Parts marked by "NSP" are generally unavailable because they are not in our Master Spare Parts List.
· 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.
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
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
Part No.
Remarks
CDR-850/MY
CDR-850/KU/CA
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
5
CDR-850
53
29
11
21
16
17
13
35
13
15
Refer to "2.4 LOADING
MECHANISM ASSY".
Refer to "2.3 FRONT
PANEL SECTION".
52
46
30
C
I
F
A
B
45
52
28
18
No Supplied
Part
12
39
2
11
11
11
34
34
31
40
12
14
48
59
27
30
5
20
8
3
1
4
12
7
11
14
24
9
11
55
51
55
30
30
33
33
23
33
23
10
12
60
34
26
34
14
56
11
49
47
22
IC308
6
11
41
24
25
37
36
Accessories for
the INPUT ASSY
58
57
19
38 MY
Type only
K
A
H
I
B
C
D
D
J
J
E
G
K
L
G
H
E
F
43
42
50
35
KU/CA
Type only
KU/CA
Type only
KU/CA
Type only
L
2.2 EXTERIOR SECTION