General Information; Diagnosis; Self-Diagnostic Function Of Pickup Defective - Pioneer XV-DV88 Service Manual

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7. GENERAL INFORMATION

7.1 DIAGNOSIS

7.1.1 SELF-DIAGNOSTIC FUNCTION OF PICKUP DEFECTIVE

This unit can confirm the laser diode current value (DVD: 650nm, CD: 780nm) of pickup on the Test Mode screen.
(Press the ESC → TEST keys in order on the test mode remote control unit (GGF1067) to enter the test mode.)
It's effective in case of the following condition.
Symptom
• Indicates "No Disc" in FL display.
• Player does not playback, etc..
Procedure of Self-Diagnosis
1 Enter the Test mode.
2 When diagnosing the 650nm laser diode:
Press the TEST
When diagnosing the 780nm laser diode:
Press the
TEST
When let it turn on once again after performed 2 once,
After pressed REP.B key once
650nm: Press the
780nm: Press the
TE
L 13942296513
3 Confirm the indicated value of the laser diode current (LDI). (Refer to following figure.)
4 When indicated value is more than 100, 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
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.
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→
1 keys in order, and turn on the laser diode (It light-up for nine seconds.).
→
keys in order, and turn on the laser diode (It light-up for nine seconds.).
4
→
keys in order
TEST 1
→
keys in order
TEST 4
Character in bold : Item name
: Information display
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2 9
8
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3 6 7 1 3
Test Mode Screen Display
.
XV-DV88, XV-DV77
9 4 2 8
1 5 0 5 8 2 9 9 4
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co
9 9
2 8 9 9
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