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TC-700P Service Manual
72
Troubleshooting Flow Chart
MCU
Normal power-on
alert tone?
MCU Check
The RF circuit can
’
t
be driven.
Yes
Speaker works well?
No
No
9.8304 MHz
works normally?
`
Yes
Replace the speaker
Yes
Pin10 is of
high level?
Yes
Check M5V
No
Yes
Check the
control circuit
Yes
Read and write
available?
Reset
Check reading
& writing circuit
MCU works normally.
No
Q610 works
Normally?
Replace Q610
Yes
No
Summary of Contents for TC-700P
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