Philips DVD740VR/051 Service Manual page 40

Main 1/8 Schematic Diagram < VCR Section >
1-11-3
* 1
Note:
When it is necessary to replace one or more of the following Diodes,
all three should be replaced: D506, D507, D508.
MODE: SP/REC
" " = SMD PLAY MODE
1 2 3
5.0 ~ 5.0 REC MODE
(2.5)
INDICATES THAT THE VOLTAGE
THE SAME VOLTAGE FOR
IS NOT CONSISTENT HERE.
BOTH PLAY & REC MODES.
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Comparison Chart of
IC501 KEY VOLTAGE CHART
Models and Marks
Pin No. KEY 1 (7PIN)
Voltage
MODEL MARK
0.00 ~ 0.51V OUTPUT
DVD740VR/001 A
0.51 ~ 0.92V STOP/EJECT
DVD740VR/051 B
0.92 ~ 1.27V REW
1.27 ~ 1.61V PLAY
1.61 ~ 1.98V FF
1.98 ~ 2.39V REC/OTR
2.39 ~ 2.90V -----------------------------
2.90 ~ 3.60V -----------------------------
3.60 ~ 4.30V SENS-INH
4.30 ~ 5.00V KEY OFF
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KEY 2 (8 PIN)
TIMER
POWER
CH UP
CH DOWN
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KEY OFF
H9330SCM1