Philips DVP3050V/75, Service Manual

Page: 36 / 77

H9923SCM1
Main 1/8 Schematic Diagram < VCR Section >
“ “ = SMD
PLAY mode
REC mode
DVD mode
Voltage indications for PLAY, REC and DVD modes
on the Schematic Diagrams are as shown below:
1 2 3
5.0
(2.5)
<
0
>
~
5.0
The same voltage for
PLAY, REC & DVD modes. Indicates that the voltage
is not consistent here.
1-13-3
IC501 KEY VOLTAGE CHART
0.00 ~ 0.51V REC/OTR --------------
0.51 ~ 0.92V ---------------- STOP/EJECT
0.92 ~ 1.27V OUTPUT-SELECT PLAY
1.27 ~ 1.61V ---------------- REW
1.61 ~ 1.98V ---------------- FF
1.98 ~ 2.39V CH-UP SENS-INH
2.39 ~ 2.90V CH-DOWN --------------
2.90 ~ 3.60V ---------------- --------------
3.60 ~ 4.30V DIRECT DUBBING --------------
4.30 ~ 5.00V KEY OFF KEY OFF
Pin No.
Voltage
KEY 1 (7 PIN) KEY 2 (8 PIN)