Service Precautions; A 1.1 Service Precautions - Pioneer AVIC-X940BT Service Manual

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1. SERVICE PRECAUTIONS

1.1 SERVICE PRECAUTIONS
1. You should conform to the regulations governing the product (safety, radio and noise, and other regulations), and
should keep the safety during servicing by following the safety instructions described in this manual.
2. Be careful in handling ICs. Some ICs such as MOS type are so fragile that they can be damaged by electrostatic
induction.
3. Please be sure to conduct line process to original status if you make assembling after repair.
4. Please be careful of not to imply static charge onto integrated circuits, etc, when you conduct repair work.
Especially, please use soldering iron with its tip grounded.
Also, please use a pair of tweezers with static charge protection capability if there is the possibility of contacting to
device terminals, and avoid the use of metal-made tweezers.
5. Before disassembling the unit, be sure to turn off the power. Unplugging and plugging the connectors during power-on
mode may damage the ICs inside the unit.
6. To protect the pickup unit from electrostatic discharge during servicing, take an appropriate treatment (shorting-solder)
by referring to "the DISASSEMBLY".
7. Please keep the distance of more than 13 cm from focus lens for safety when you check pickup and make adjustment,
and do not look straight at Laser Beam for more than 10 seconds.
8. Please power adjustment when you replaced mechanical area of DVD Mecha Module or DVD core unit.
9. Graphically-illustrated areas become hot. Be careful not to burn yourself.
Drive
IC
IC1251
10. The part listed below is difficult to replace as a discrete component part.
When the part listed in the table is defective, replace whole Assy.
AV UNIT
IF PCB
CC MONITOR UNIT
LCD-IF UNIT
11. On this mechanism, Pickup and Spindle Motor can not be replaced at the service site, because a special facility is
required for the adjustment after replacing them.
So, if Pickup or Spindle Motor is defective, replace the Mechanism Unit.
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Main IC
IC1501
IC1281 LT3505EDD
IC2141 LT1912EMSE
IC151 GRF3I-0336S
IC4204, IC4205 LTC3412AEFE
IC4001 TT4421
IC4654 WM1616LGEFL
IC4501 PEM002C8
IC4901 TC90192XBG
IC4406 CY62147EV30LL45BVA
IC4403 CXX4262
IC3200 OZ527IRN
IC4701 341S2162
IC5513 AK8859VN
IC5001 R1290K103A
AVIC-X940BT/XNUC
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Heat pad
Heat pad
Heat pad
Heat pad
BGA
Terminal is bent inside
BGA
BGA
BGA
BGA
Heat pad
Terminal is bent inside
Terminal is bent inside
Heat pad
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A
B
C
D
E
F
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