General Information; Diagnosis; Self-Diagnosis Function Of Pickup Defective - Pioneer DVD-V8000 Service Manual

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7. GENERAL INFORMATION

7.1 DIAGNOSIS

7.1.1 SELF-DIAGNOSIS FUNCTION OF PICKUP DEFECTIVE

This unit can confirm the laser diode current value (DVD: 650 nm, CD: 780 nm) of pickup on the Test Mode screen.
(Press the ESC → TEST keys in order on the test mode remote control unit (GGF1381) to enter the test mode.)
It's effective in case of the following condition.
Symptom
• "No Disc" displays in LCD.
• Player does not playback, etc..
Procedure of Self-Diagnosis
1 Enter the Test mode.
2 When diagnosing the 650 nm laser diode:
→
Press the TEST 1 keys in order, and turn on the laser diode (It light-up for nine seconds.).
When diagnosing the 780 nm laser diode:
→
Press the keys in order, and turn on the laser diode (It light-up for nine seconds.).
TEST 4
When let it turn on once again after performed 2 once,
After pressed REP.B key once
650 nm: Press the
TEST
780 nm: Press the
TEST
3 Confirm the indicated value of the laser diode current (LDI). (Refer to following figure.)
4 When indicated value is more than 140, pickup is defective. → Replacement is necessary
Replace the Traverse Mechanism Assy or Pickup.
Note :
When a DVD disc or a CD disc is played in the test mode, this function is effective.
Laser diode current value
5
6
→
keys in order
1
→
keys in order
4
Character in bold : Item name
: Information display
6
7
Test mode screen
DVD-V8000
7
8
A
B
C
D
E
F
87
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