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There are currently no product reviews.
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Very good scan quality, only PC Board scan not enough contrast.
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First of all I must say that I received the manual in just a few minutes after placing the order. The copy is well done and very readable. I will buy others soon... Thanks, Meyer
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Good service manual. I gat all I want. Copy is good, but could be better. All clear and useful. I sincerely recommend.
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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.
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Welcome. The scheme is clearly helped me to repair. Worth to download it.
KD-S901R
3.2.1 Feed section
Is the voltage output at IC521 pin "40" 5V or 0V? YES Is 4V present at both sides of the feed motor? YES Check the feed motor.
3.2.2 Focus section
NO
Is the wiring for IC561 pin 27? NO
YES Is 3.3V present at IC561 pin "20"? YES Check the vicinity of IC521. YES Check the feed motor connection wiring.
NO Check CD 8V and 5V.
NO
Is 6V or 2V present at IC561 "4" and "5"? NO Check IC501.
When the lens is moving: 4V
Does the S-search waveform appear at IC561 pins "8" and "9"?
NO
Check the circuits in the vicinity of IC561 pins "8","9"and"15".
YES YES
Check the pickup and its connections
3.2.3 Spindle section
Is the disk rotated? YES Does the RF signal appear at RF test point? YES Is the RF waveform at RF test point distorted? YES Proceed to the Tracking section
3.2.4 Tracking section
NO
Is 4V present at IC561 pins "6" and "7"? YES Check the spindle motor and its wiring
NO
Is 4V present at IC521 pins "41" ? YES Check the vicinity of IC561.
NO
NO
Check IC521 and IC561.
Check the circuits in the NO vicinity of IC561 "19"~ "24" or the pickup
When the disc is rotated at first:
YES
Approx. 1.2V Is the tracking error signal output at IC501 "11"?
Check the circuit in the vicinity of IC501 pins "2"~"12".
YES
Check the pickup and its connections
YES Check IC541.
(No.49821)1-25
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