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some of the writing is a bit blur but the part in the schmatic was great and i have fixed the machine thanks
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Well.. I'd searched for this manual and although I found many copies online I was pleased to find your website with a well balanced pricing system and easy to search and follow links. That together with the very quick response time was just what I was looking for.. being a very impatient tech.. ;-) I had the service manual in front of me within a short time.
Bookmarked.. and you can bet I will always come here first for my service & user manuals..
best regards
Ed(Tony) Foley
G7WHK
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I will definitely be back for more information when I need it.
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The service manual when downloaded and printed out was clear and easy to read. I would have liked to have been able to enlarge some details, but this was not possible as the file permissions did not allow this. The service was very good. The time taken from placing my order to downloading the document was only a few minutes.
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The manual is useful for trouble shooting for an old instrument. It saved money,and let me enjoy DIY.
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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
3 4
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