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ORDER NO.
CRT5661
AVH-3700DVD/XEUW5
DVD AV RECEIVER
AVH-3700DVD /XEUW5
AVH-3750DVD/XERD
AVH-3750DVD/XERI
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 2015
K-ZZZ JAN. 2015 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.
A Qualified technicians have the necessary test equipment and tools, and have been trained to properly and safety 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 safety, you should not risk trying to do so
and refer the repair to a qualified service technician.
Where in a manufacturer's service documentation, for example in circuit diagrams or lists
of components, a symbol is used to indicate that a specific component shall be replaced only
by the component specified in that documentation for safety reasons, the following symbol shall
be used:
B
- Safety Precautions for those who Service this Unit.
When checking or adjusting the emitting power of the laser diode exercise caution in order to get safe, reliable
results.
Caution:
1. During repair or tests, minimum distance of 13 cm from the focus lens must be kept.
2. During repair or tests, do not view laser beam for 10 seconds or longer.
CAUTION: USE OF CONTROLS OR
ADJUSTMENTS OR PERFORMANCE OF
PROCEDURES OTHER THAN THOSE
SPECIFIED HEREIN MAY RESULT IN
HAZARDOUS RADIATION EXPOSURE.
C
CAUTION: THE USE OF OPTICAL
INSTRUMENTS WITH THIS PRODUCT
WILL INCREASE EYE HAZARD.
This product is a class 1 laser product, but
this product contains a laser diode higher
than Class 1. To ensure continued safety,
do not remove any covers or attempt to
gain access to the inside of the product.
D
Laser diode characteristics
Wave length:
DVD: 650 nm to 662 nm
CD: 775 nm to 795 nm
Focus lens on Maximum output:
CD: 2.18 mW
DVD: 1.33 mW
Additional Laser Caution
Transistors Q17 and Q19 in PCB drive the laser diodes for DVD and CD
E
respectively. When Q17 and Q19 is shorted between their terminals,
the laser diodes for DVD or CD will radiate beam. If the top cover is removed
with no disc loaded while such short-circuit is continued, the naked eyes may
be exposed to the laser beam.
CAUTION
Danger of explosion if battery is incorrectly replaced.
Replaced only with the same or equivalent type recommended by the manufacturer.
Discord used batteries according to the manufacture's instructions.
F
2 AVH-3700DVD/XEUW5
1 2 3 4
5 6 7 8
CONTENTS
SAFETY INFORMATION.......................................................................................................................................................... 2
1. SERVICE PRECAUTIONS .................................................................................................................................................... 4
1.1 SAFETY PRECAUTIONS ............................................................................................................................................... 4 A
1.2 NOTES ON DISASSEMBLY / ASSEMBLY ..................................................................................................................... 4
1.3 NOTES ON OPERATION CHECK / DIAGNOSIS ........................................................................................................... 4
1.4 NOTES ON REPLACING PARTS ................................................................................................................................... 5
1.5 NOTES ON ADJUSTMENT ............................................................................................................................................ 5
1.6 OTHERS ......................................................................................................................................................................... 5
2. SPECIFICATIONS................................................................................................................................................................. 6
2.1 SPECIFICATIONS .......................................................................................................................................................... 6
2.2 DISC/CONTENT FORMAT ............................................................................................................................................. 6
3. BASIC ITEMS FOR SERVICE .............................................................................................................................................. 6
3.1 CHECK POINTS AFTER SERVICING ........................................................................................................................... 6
3.2 PCB LOCATIONS ........................................................................................................................................................... 7
3.3 JIGS LIST ....................................................................................................................................................................... 7 B
3.4 CLEANING ..................................................................................................................................................................... 7
4. BLOCK DIAGRAM ................................................................................................................................................................ 8
4.1 BLOCK DIAGRAM .......................................................................................................................................................... 8
4.2 POWER SUPPLY SYSTEM FIGURE ........................................................................................................................... 10
5. DIAGNOSIS ........................................................................................................................................................................ 12
5.1 DIAGNOSIS FLOWCHART .......................................................................................................................................... 12
5.2 ERROR CODE LIST ..................................................................................................................................................... 12
5.3 CONNECTOR FUNCTION DESCRIPTION.................................................................................................................. 13
6. SERVICE MODE ................................................................................................................................................................. 14
6.1 METHOD OF SOFTWARE UPDATE ............................................................................................................................ 14
7. DISASSEMBLY ................................................................................................................................................................... 16
C
8. EACH SETTING AND ADJUSTMENT ................................................................................................................................ 20
8.1 TOUCH PANEL ADJUSTMENT.................................................................................................................................... 20
9. EXPLODED VIEWS AND PARTS LIST............................................................................................................................... 22
9.1 PACKING ...................................................................................................................................................................... 22
9.2 EXTERIOR (1) .............................................................................................................................................................. 24
9.3 EXTERIOR (2) .............................................................................................................................................................. 26
9.4 EXTERIOR (3) .............................................................................................................................................................. 28
10. SCHEMATIC DIAGRAM .................................................................................................................................................... 30
10.1 MB ASSY (TUNER/VIDEO SW/EVOL)....................................................................................................................... 30
10.2 MB ASSY (MPEG/MOTOR DRIVE/SDRAM).............................................................................................................. 32
10.3 MB ASSY (MCU) ........................................................................................................................................................ 34
10.4 MB ASSY (AUDIO AMP) ............................................................................................................................................ 36 D
10.5 MB ASSY (POWER) ................................................................................................................................................... 38
10.6 MB ASSY (CONNECTOR) ......................................................................................................................................... 40
10.7 KB ASSY (1/2) and KB ASSY (2/2) ............................................................................................................................ 42
10.8 MI ASSY (1/2) (TFT DRIVE)....................................................................................................................................... 44
10.9 MI ASSY (1/2)(TFT POWER) and MI ASSY (2/2) ...................................................................................................... 46
11. PCB CONNECTION DIAGRAM ........................................................................................................................................ 48
11.1 MB ASSY.................................................................................................................................................................... 48
11.2 KB ASSY and MI ASSY.............................................................................................................................................. 52
12. ELECTRICAL PARTS LIST ............................................................................................................................................... 54
E
F
AVH-3700DVD/XEUW5 3
5 6 7 8
1 2 3 4
1. SERVICE PRECAUTIONS
1.1 SAFETY PRECAUTIONS
You should conform to the regulations governing the product (safety, radio and
A U101:
noise, and other regulations), and should keep the safety during servicing by
TEF6624(UW5)/
following the safety instructions described in this manual. TEF6621(RD/RI)
Tuner IC
Be careful in handling metal parts. There might be an internal sharp edge or burr.
Following ICs become hot. Be careful not to bum yourself. U102 : AM5766
Motor Driver IC
U105 : SPHE8202GQ
AV Processor IC (MPEG)
B
1.2 NOTES ON DISASSEMBLY / ASSEMBLY
FPC, 30P which connect MB ASSY and MI ASSY (1/2) on DVD Mechanism Unit are fixed with Tape (black).
Please be careful of positions for FPC, 30P and Tape (black) when disassembling DVD Mechanism Unit and
reinstall FPC, 30P.
Pasting Position of FPC, 30P Pasting Position of Tape (black)
C
If customer's DISC becomes unable to reject, reject it with the following
method.
When 3.6V - 5.0V DC voltage is applied between "M_TRAY+
D
(White)" and "M_TRAY