|
|
|
Categories
|
|
Information
|
|
Featured Product
|
|
|
 |
|
|
There are currently no product reviews.
 ;
The schematic is very helpful and the images are very good.The schematic is very helpful and the images are very good.The schematic is very helpful and the images are very good.The schematic is very helpful and the images are very good.The schematic is very helpful and the images are very good.The schematic is very helpful and the images are very good.
;
Welcome. The scheme is clearly helped me to repair. Worth to download it.
 ;
Excellent manual, very clear, technical specification provided, useful information regarding adjustment and set up.
;
fast and easy and exactly what I was looking for. Not the cheapest but value for money after all.
;
The manual for the Sansui P-L75 was not one of the more informative turntable manuals around but for $5 it was helpful enough.
QT-CD180H/QT-CD180W
� Focus failure.
Does the optical pickup move up and down when the disc is removed ? Yes Check as stated in item "FOCUS SERVO SAWTOOTH WAVE FAILURE".
No
Is the following waveform output at the pin 62 (FEI) of IC802 when the disc is set ? Yes
pin 62 (FEI)
No
Check the periphery of IC801 and BI801/CNS801. Is it normal ? Yes
The optical pickup is faulty.
pin 86 (FOO) pin 63 (SBAD)
Is the waveform shown above input at the pin 63 (SBAD) of IC802 ? Yes
No
Check the pattern between pin 13 of IC801 and pin 63 of IC802. Check the periphery of IC801 and BI801/CNS801.
IC801 is faulty.
� Focus servo sawtooth wave failure.
Is sawtooh wave output to the pin 66 (FOO) of IC802 ? Yes IC802 is faulty.
No
1.5~2.5sec
Is +8.1V applied to the pins 21 and 22 (VCC) of IC803 ? No Yes
Check the PWB pattern of IC803.
Is sawtooth wave obtained between pins 17 and 18 of IC803 ? Yes
No
Check the PWB pattern of IC803.
1.5~2.5sec
Is sawtooth wave obtained between pins 3 and 4 of BI801/ CNS801 ? (as shown above) Yes
Check the PWB pattern between BI801/CNS801 and IC803. No
BI801/CNS801 connection failure or optical pickup failure.
� 22 �
|
|
|
> |
|
