Sony GV-A500 Service Manual page 81

5. Condensation, head clogging check
Page 3 Address 17
Bit Function
0 Condensation state (1 hour preservation)
1 Head clogging
2
3
4
5
6
7
Using method:
1) Select page: 3, address: 17.
2) By discriminating the bit value of the display data, the state of
the VTR can be discriminated.
6. VTR state check (1)
Page 3 Address 18
Bit Function
0 Video/audio circuit PB mode
1
2
3
4 Head clog detection when REC
5
6 Recorded tape playback
7 Capstan rotation
Using method:
1) Select page: 3, address: 18.
2) By discriminating the bit value of the display data, the state of
the VTR can be discriminated.
7. VTR state check (2)
Page 3 Address 19
Bit Function
0 Eject state
1 Cassette insertion state
2 Cassette accidental erasure prevention
3 Tape type
4 Tape type
5 Crystal variable speed playback
6 Variable speed playback mode
7 DRUM
Using method:
1) Select page: 3, address: 19.
2) By discriminating the bit value of the display data, the state of
the VTR can be discriminated.
When bit value = 1 When bit value = 0
Condensation
Head clogging
When bit value = 1 When bit value = 0
PB mode REC/E-E mode
Head clog
Playback
Rotation
When bit value = 1 When bit value = 0
Eject state REC/E-E mode
Cassette in
Accidental erasure
prevention state
ME MP
Hi8 MP MORMAL MP, ME
Variable speed playback
Variable speed playback
mode
DRUM rotation STOP
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