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5
5.2 INSPECTION METHOD OF PICKUP UNIT
Judgement of pickup conditions
• Disc used:
CD-DA
: TCD-782
DVD-Video : GGV1025
* Handle or store discs with care as scratched or dirty discs cannot provide accurate judgement.
• How to diagnose
* For the details of checks 1 to 3, see the next page.
See also the mecha test mode described in the service manual.
START
Light up pickup
Yes
Check 1
Check LD current
Check LD current
Within prescribed
value?
Yes
Check 2
Check RF level
Check RF level
Within prescribed
value?
Yes
Check 3
Check measured value of error ratio
Check error ratio
Within prescribed
value?
Yes
No problem found
in pickup
5
6
Diagnose in a
normal way.
No
To "Replace pickup"
No
* Make sure to avoid any unwiped
spots or actuator breakage.
Lens cleaning
completed?
No
No
Yes
* Make sure to avoid any unwiped
spots or actuator breakage.
Lens cleaning
completed?
No
No
Yes
AVH-P6300BT/XNUC
6
7
Check 2
Check 3
Clean lens
To "Replace pickup"
Clean lens
To "Replace pickup"
7
8
Replace pickup
Adjust skew
Check RF level
Check RF level
Within prescribed
No
value?
Yes
Check measured value of error ratio
Check error ratio
Within prescribed
No
value?
Yes
End
8
A
B
C
D
E
F
37
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