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ORDER NO.
RRV4322
X-HM81-K
NETWORK CD RECEIVER SYSTEM
X-HM81-K
X-HM81-S
X-HM71-K X-HM71-S
NETWORK CD RECEIVER
XC-HM81-K XC-HM81-S
THIS MANUAL IS APPLICABLE TO THE FOLLOWING MODEL(S) AND TYPE(S).
Model Type Power Requirement Remarks
X-HM81-K, X-HM81-S SYXE8 AC 220 V to 240 V
XC-HM81-K, XC-HM81-S SYXE8 AC 220 V to 240 V
X-HM71-K, X-HM71-S SYXE8 AC 220 V to 240 V
X-HM71-K CXE AC 120 V
X-HM71-S AXQ5 AC 220 V
PIONEER CORPORATION 1-1, Shin-ogura, Saiwai-ku, Kawasaki-shi, Kanagawa 212-0031, Japan
PIONEER ELECTRONICS (USA) INC. P.O. Box 1760, Long Beach, CA 90801-1760, U.S.A.
PIONEER EUROPE NV Haven 1087, Keetberglaan 1, 9120 Melsele, Belgium
PIONEER ELECTRONICS ASIACENTRE PTE. LTD. 253 Alexandra Road, #04-01, Singapore 159936
PIONEER CORPORATION 2012
K-MZV AUG. 2012 Printed in Japan
1 2 3 4
SAFETY INFORMATION
A
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
Laser Pickup specifications and Laser characteristics
For CD Wave length (typ) : 790 nm
Operation output : 3 mW CW, Class 1
Maximum output : Class 1 (Under fault condition)
C
LABEL CHECK
D
SYXE8 model
AXQ5 model
CXE model
E
F
2 X-HM81-K
1 2 3 4
5 6 7 8
CONTENTS
SAFETY INFORMATION.......................................................................................................................................................... 2
1. SERVICE PRECAUTIONS .................................................................................................................................................... 4
1.1 NOTES ON SOLDERING ............................................................................................................................................... 4 A
1.2 WHEN REPLACING MECHA ......................................................................................................................................... 4
1.3 WHEN REPLACING CR870 (Module including BCO Assy) ........................................................................................... 4
2. SPECIFICATIONS................................................................................................................................................................. 5
3. BASIC ITEMS FOR SERVICE .............................................................................................................................................. 6
3.1 CHECK POINTS AFTER SERVICING ........................................................................................................................... 6
3.2 JIGS LIST ....................................................................................................................................................................... 6
3.3 PCB LOCATIONS ........................................................................................................................................................... 7
4. BLOCK DIAGRAM .............................................................................................................................................................. 10
4.1 OVERALL WIRING DIAGRAM ..................................................................................................................................... 10
4.2 OVERALL BLOCK DIAGRAM....................................................................................................................................... 12
4.3 POWER SUPPLY BLOCK DIAGRAM........................................................................................................................... 14
5. DIAGNOSIS ........................................................................................................................................................................ 16 B
5.1 TROUBLESHOOTING.................................................................................................................................................. 16
5.2 PROTECTION CIRCUIT............................................................................................................................................... 21
5.3 POWER MANAGEMENT.............................................................................................................................................. 24
5.4 CHECKING TERMINALS ............................................................................................................................................. 25
5.5 IC INFORMATION ........................................................................................................................................................ 28
6. SERVICE MODE ................................................................................................................................................................. 31
6.1 SERVICE MODE .......................................................................................................................................................... 31
6.2 PROTECT CHECK MODE ........................................................................................................................................... 33
6.3 CHECKING THE LCD .................................................................................................................................................. 35
6.4 RDS CHARACTERS..................................................................................................................................................... 36
7. DISASSEMBLY ................................................................................................................................................................... 37
C
8. EACH SETTING AND ADJUSTMENT ................................................................................................................................ 45
8.1 UPDATING OF THE FIRMWARE ................................................................................................................................. 45
8.2 INITIAL SETTINGS....................................................................................................................................................... 51
9. EXPLODED VIEWS AND PARTS LIST............................................................................................................................... 52
9.1 PACKING SECTION ..................................................................................................................................................... 52
9.2 EXTERIOR SECTION .................................................................................................................................................. 54
9.3 SPEAKER SECTION (S-HM81GB, S-HM81SA) .......................................................................................................... 58
9.4 SPAEKER SECTION (S-HM71).................................................................................................................................... 59
10. SCHEMATIC DIAGRAM .................................................................................................................................................... 60
10.1 CD ASSY .................................................................................................................................................................... 60
10.2 TUNER and BT ASSYS.............................................................................................................................................. 62
10.3 MAIN ASSY (1/3)........................................................................................................................................................ 64 D
10.4 MAIN ASSY (2/3)........................................................................................................................................................ 66
10.5 MAIN ASSY (3/3)........................................................................................................................................................ 68
10.6 BCO ASSY (1/2) ......................................................................................................................................................... 70
10.7 BCO ASSY (2/2) ......................................................................................................................................................... 72
10.8 CNT1 ASSY................................................................................................................................................................ 74
10.9 CNT2 ASSY................................................................................................................................................................ 76
10.10 CNT3 ASSY.............................................................................................................................................................. 78
10.11 F_AUX, F_USB, FRONT and KEY ASSYS .............................................................................................................. 80
10.12 DOCKING ASSY ...................................................................................................................................................... 82
10.13 POWER ASSY.......................................................................................................................................................... 84
10.14 WAVEFORMS........................................................................................................................................................... 86
11. PCB CONNECTION DIAGRAM ........................................................................................................................................ 88 E
11.1 CD ASSY .................................................................................................................................................................... 88
11.2 TUNER and BT ASSYS.............................................................................................................................................. 90
11.3 MAIN ASSY ................................................................................................................................................................ 92
11.4 BCO ASSY ................................................................................................................................................................. 96
11.5 CNT1, CNT2 and CNT3 ASSYS................................................................................................................................. 98
11.6 F_AUX, F_USB, FRONT, KEY and DOCKING ASSYS ............................................................................................ 102
11.7 POWER ASSY.......................................................................................................................................................... 106
12. PCB PARTS LIST ............................................................................................................................................................ 108
F
X-HM81-K 3
5 6 7 8
1 2 3 4
1. SERVICE PRECAUTIONS
1.1 NOTES ON SOLDERING
A