Toshiba D-VR4SU Service Manual page 103

Hi-Fi AUDIO
CAN NOT RECORD
Does E-E AUDIO appear ?
YES
AT state of video recording,
is there audio signal at pin 7,
9, 57, 69 and71 of IC701 ?
YES
Is there audio signal at pin
78 and 80 of IC701 ?
YES
At recording and play, is
there signal at pin 7, 8
and 9 of CP101 0?
YES
Check IC701.
TROUBLESHOOTING GUIDE
NO
NO
NO
NO
E-29
Refer to section "E-E AUDIO
(MONO) DOES NOT APPEAR".
Check circuit around of J601,
J602, J8002 and TU301.
Change IC701.
Check CYLINDER UNIT.
D-VR4SU/D-VR4SC