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As Always you can find here manuals even of difficult TV scheme which are scan in almost perfect way.clear and fast!!!!!
Great work thanks!
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Incredibly clear!!!! Well done, complete and wonderful. It could not better than this!!!!
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Thank You for fast delivery for the sheme.
Everything allright.
Thanks & best regards Franz
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again you did a very good job. It was fast too. Photocopy are really readable and clear
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Probably it never existed a 1081 official service manual from Commodore, it's look more like a NAPCEC service manual & diagrams compilation of the 1084 series and his variants, like the nap6523, 8cm505, 1084S, 1084P and obviously the 1081. It's more complete than other scans and the quality of the scans also are far superior. It has two circuit diagrams variants of the 1081, mono and stereo versions. It doesn't include a diagram for the Philips CM8500 or CM8501, they look like the 1081 but they are slightly different.
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No sound from the speakers (2/2)
A
A
No sound from the sub-woofer No
Is it sound for every function that doesn't come out? No
Is sound muting set? No
Yes
Cancel muting then check again.
Is a signal output from IC8002?
B
Yes
B
Check around IC8002 and No check the communications between IC8002 and the microcomputer.
Is the volume set to 0? No Are the headphones connected? No Is a signal output from IC8003? (3), (13)
Yes
Raise the volume then check again.
Yes
Has the signal arrived at TP8668 and TP8667?
No Check around IC8003 and check the buffer circuits.
Disconnect the headphones then check again.
45 46
Yes Has the signal arrived at TP9301 and TP9303?
B
Check the flexible cables No between the AV BOARD Assy and MR MAIN BOARD Assy
No Check around IC8003 and
34 35
Yes
B
No
check each input signal.
47 48
Yes Has the symptom been settled when the system cable is replaced? Yes
B
No
and between the MR MAIN BOARD Assy and MDR Assy.
Is a signal output from IC8008? (7), (10) Yes
36 37
B
No
Check around IC8008.
C
The panel is defective.
Is a signal output from IC8007? (1), (7)
Check around IC8007.
38 39
Yes
B
No
Finishing troubleshooting
Has the signal arrived at TP7710?
Check around Q7761.
49
Yes
B
Check around the jack.
D
E
F
134
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PDP-R04E
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