It's a grate service manuals.Have many details and the writing it's so clear.You have all you want in manual,nothing missing,belive me.I'm verry satisfied of this manual.
An excellent document to assist in the repair of my old personal tape player. It includes full circuit diagrams and physical layout drawings and full instructions on disassembly and fault finding.
Well worth the meagre price.
Very good conversation, Pretty fast Service, wood do it again,
Have paid by Paypal, so i got the Service Manual online after 15 Min.
Very helpfully.
Greeting from Germany,
Hans
Text excerpt from page 16 (click to view)
7. The voice of the caller cannot be heard (incoming call).
Can the base and handset be connected?
NG
See 3. The base and handset cannot be connected
OK
The 1 kHz, -20 dBm sine waveform is applied to TELline of the base, can the 1 kHz sine waveform from the Q5 collector be fed?
NG
Check the base TEL-line circuit and REPLAY control circuit.
OK
Check whether there is the 1 kHz sine waveform at pin 37 of IC 7.
NG
Check Q5 and its peripheral circuit.
OK
Check whether there is the 1 kHz sine waveform at pin 46 of IC604.
NG
Check IC604 and its peripheral circuit.
OK
Check whether there is the 1 kHz sine waveform at the collector of Q614 and the emitter of Q615.