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ORDER NO.
RRV4128
CDJ-850

MULTI PLAYER

CDJ-850
THIS MANUAL IS APPLICABLE TO THE FOLLOWING MODEL(S) AND TYPE(S).
Model Type Power Requirement Remarks

CDJ-850 SYXJ8 AC 220 V to 240 V

CDJ-850 CUXJ AC 120 V

CDJ-850 FLXJ AC 110 V to 240 V
CDJ-850 KXJ5 AC 220 V

CDJ-850 AXJ5 AC 220 V to 240 V

For details, refer to "Important Check Points for good servicing".
K-IZV JULY 2010 Printed in Japan
1 2 3 4

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
B This product may contain a chemical known to the State of California to cause cancer, or birth defects or other reproductive
harm.
Health & Safety Code Section 25249.6 - Proposition 65

CAUTION
This product is a class 1 laser product classified
C
under the Safety of laser products, IEC 60825-1:2007.

CLASS 1 LASER PRODUCT
D58-5-2-2a_A1_En

D
IMPORTANT
Laser Pickup specifications and Laser characteristics
THIS PIONEER APPARATUS CONTAINS
LASER OF CLASS 1. For CD Wave length (typ) : 790 nm
SERVICING OPERATION OF THE APPARATUS Operation output : 4 mW CW, Class 1
S H O U L D B E D O N E B Y A S P E C I A L LY Maximum output : Class 1 (Under fault condition)
INSTRUCTED PERSON.

Additional Laser Caution
E
1. Laser Interlock Mechanism
The position of the switch (S1702) for detecting loading
completion is detected by the system microprocessor, and the
design prevents laser diode oscillation when the switch is not in
LPS1 terminal side (when the mechanism is not clamped and
LPS1 signal is high level.)
Thus, the interlock will no longer function if the switch is
deliberately set to LPS1 terminal side.
( if LPS1 signal is low level ).
In the Service mode the interlock mechanism will not function.
Laser diode oscillation will continue, if pin 41 of TC94A15FG
(IC201) on the MAIN Assy is connected to GND, or else the
terminals of Q201 are shorted to each other (fault condition).
F
2. When the cover is opened, close viewing of the objective lens
with the naked eye will cause exposure to a Class 1 laser beam.

2 CDJ-850
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LABEL CHECK A

(Printed on the chassis) (Printed on the chassis) (Printed on the chassis)

SYXJ8 CUXJ FLXJ

(Printed on the chassis) (Printed on the chassis)

KXJ5 AXJ5

CDJ-850 3
5 6 7 8
1 2 3 4

A
[Important Check Points for Good Servicing]
In this manual, procedures that must be performed during repairs are marked with the below symbol.
Please be sure to confirm and follow these procedures.
1. Product safety
Please conform to product regulations (such as safety and radiation regulations), and maintain a safe servicing environment by
following the safety instructions described in this manual.

1 Use specified parts for repair.

Use genuine parts. Be sure to use important parts for safety.

2 Do not perform modifications without proper instructions.
B
Please follow the specified safety methods when modification(addition/change of parts) is required due to interferences such as
radio/TV interference and foreign noise.

3 Make sure the soldering of repaired locations is properly performed.

When you solder while repairing, please be sure that there are no cold solder and other debris.
Soldering should be finished with the proper quantity. (Refer to the example)

4 Make sure the screws are tightly fastened.

Please be sure that all screws are fastened, and that there are no loose screws.

5 Make sure each connectors are correctly inserted.

Please be sure that all connectors are inserted, and that there are no imperfect insertion.
C
6 Make sure the wiring cables are set to their original state.

Please replace the wiring and cables to the original state after repairs.
In addition, be sure that there are no pinched wires, etc.

7 Make sure screws and soldering scraps do not remain inside the product.

Please check that neither solder debris nor screws remain inside the product.

8 There should be no semi-broken wires, scratches, melting, etc. on the coating of the power cord.

Damaged power cords may lead to fire accidents, so please be sure that there are no damages.
If you find a damaged power cord, please exchange it with a suitable one.

9 There should be no spark traces or similar marks on the power plug.
D
When spark traces or similar marks are found on the power supply plug, please check the connection and advise on secure
connections and suitable usage. Please exchange the power cord if necessary.

a Safe environment should be secured during servicing.

When you perform repairs, please pay attention to static electricity, furniture, household articles, etc. in order to prevent injuries.
Please pay attention to your surroundings and repair safely.

2. Adjustments
To keep the original performance of the products, optimum adjustments and confirmation of characteristics within specification.
Adjustments should be performed in accordance with the procedures/instructions described in this manual.

E 3. Lubricants, Glues, and Replacement parts
Use grease and adhesives that are equal to the specified substance.
Make sure the proper amount is applied.

4. Cleaning
For parts that require cleaning, such as optical pickups, tape deck heads, lenses and mirrors used in projection monitors, proper
cleaning should be performed to restore their performances.

5. Shipping mode and Shipping screws

F To protect products from damages or failures during transit, the shipping mode should be set or the shipping screws should be
installed before shipment. Please be sure to follow this method especially if it is specified in this manual.

4 CDJ-850
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CONTENTS
SAFETY INFORMATION.......................................................................................................................................................... 2
1. SERVICE PRECAUTIONS .................................................................................................................................................... 6
1.1 NOTES ON SOLDERING ............................................................................................................................................... 6 A
1.2 ABOUT POWER SUPPLY MONITORING ...................................................................................................................... 6
2. SPECIFICATIONS................................................................................................................................................................. 7
2.1 SPECIFICATIONS .......................................................................................................................................................... 7
2.2 USABLE DISCS AND USB DEVICES............................................................................................................................ 8
2.3 PANEL FACILITIES....................................................................................................................................................... 10
3. BASIC ITEMS FOR SERVICE ............................................................................................................................................ 13
3.1 CHECK POINTS AFTER SERVICING ......................................................................................................................... 13
3.2 JIGS LIST ..................................................................................................................................................................... 13
3.3 PCB LOCATIONS ......................................................................................................................................................... 14
4. BLOCK DIAGRAM .............................................................................................................................................................. 16
4.1 OVERALL WIRING DIAGRAM ..................................................................................................................................... 16
4.2 SIGNAL BLOCK DIAGRAM.......................................................................................................................................... 18
B
4.3 POWER SUPPLY BLOCK DIAGRAM........................................................................................................................... 20
5. DIAGNOSIS ........................................................................................................................................................................ 22
5.1 POWER ON SEQUENCE............................................................................................................................................. 22
5.2 TROUBLESHOOTING.................................................................................................................................................. 23
5.3 DIAGNOSIS OF THE PICKUP ASSY........................................................................................................................... 32
5.4 CONNECTION CHECK WITH THE PC........................................................................................................................ 33
5.5 ABOUT POWER SUPPLY MONITORING .................................................................................................................... 34
5.6 ABOUT THE PROTECTORS........................................................................................................................................ 34
6. SERVICE MODE ................................................................................................................................................................. 35
6.1 SERVICE MODE .......................................................................................................................................................... 35
6.2 ABOUT THE DEVICE OF CDJ-850.............................................................................................................................. 35
6.3 DETAILS ON SERVICE MODE .................................................................................................................................... 36
7. DISASSEMBLY ................................................................................................................................................................... 42 C
8. EACH SETTING AND ADJUSTMENT ................................................................................................................................ 52
8.1 NECESSARY ITEMS TO BE NOTED........................................................................................................................... 52
8.2 USER SETABLE ITEMS ............................................................................................................................................... 52
8.3 UPDATING OF THE FIRMWARE ................................................................................................................................. 53
8.4 JOG DIAL ROTATION LOAD ADJUSTMENT ............................................................................................................... 55
9. EXPLODED VIEWS AND PARTS LIST............................................................................................................................... 56
9.1 PACKING SECTION ..................................................................................................................................................... 56
9.2 EXTERIOR SECION..................................................................................................................................................... 58
9.3 CONTROL PANEL SECTION ....................................................................................................................................... 60
9.4 JOG DIAL SECTION .................................................................................................................................................... 62
9.5 SLOTIN MECHA SECTION .......................................................................................................................................... 64
10. SCHEMATIC DIAGRAM .................................................................................................................................................... 66 D
10.1 CNCT, SLMB and JINT ASSYS.................................................................................................................................. 66
10.2 MAIN ASSY (1/4)........................................................................................................................................................ 68
10.3 MAIN ASSY (2/4)........................................................................................................................................................ 70
10.4 MAIN ASSY (3/4)........................................................................................................................................................ 72
10.5 MAIN ASSY (4/4)........................................................................................................................................................ 74
10.6 CMPX (1/2) and USBA ASSYS .................................................................................................................................. 76
10.7 CMPX ASSY (2/2) ...................................................................................................................................................... 78
10.8 DFLB ASSY ................................................................................................................................................................ 80
10.9 KSW1 and KSW2 ASSYS .......................................................................................................................................... 82
10.10 JFLB and JOGB ASSYS........................................................................................................................................... 84
10.11 SLD1, PSWB and SLD2 ASSYS .............................................................................................................................. 86
10.12 POWER SUPPLY and ACIN ASSYS ........................................................................................................................ 88 E
10.13 VOLTAGES ............................................................................................................................................................... 90
10.14 WAVEFORMS........................................................................................................................................................... 91
10.15 EACH SIGNAL LEVEL.............................................................................................................................................. 93
11. PCB CONNECTION DIAGRAM ........................................................................................................................................ 94
11.1 CNCT, SLMB and JINT ASSYS.................................................................................................................................. 94
11.2 MAIN ASSY ................................................................................................................................................................ 98
11.3 CMPX and USBA ASSYS......................................................................................................................................... 102
11.4 DFLB ASSY .............................................................................................................................................................. 106
11.5 KSW1 and KSW2 ASSYS ........................................................................................................................................ 110
11.6 JFLB and JOGB ASSYS........................................................................................................................................... 112
11.7 SLD1, PSWB and SLD2 ASSYS .............................................................................................................................. 114
11.8 POWER SUPPLY and ACIN ASSYS ........................................................................................................................ 116
F
12. PCB PARTS LIST ............................................................................................................................................................ 118

CDJ-850 5
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1. SERVICE PRECAUTIONS
1.1 NOTES ON SOLDERING
A

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