Panasonic VL-GD001RU Service Manual ▷ View online
6.4. Receiving the Call Button on the Doorphone
(A) When the doorphone Call button is pressed, the bell can not be heard through the handset;
Note:
(*1) Refer to Check IC2 (P.20)
0 V
0 V
5 V
Short P1 and P2.
TPB
(Q1 Base)
TPC
(Q1 Collector)
Pin 20 of IC2
<Fig. 102>
17
VL-GD001RU
(B) Although the handset rings, the doorphone does not ring;
Note:
(*1) Refer to Check IC2 (P.20)
Short P1 and P2 with 560~680 .
TPB
0V
ENV
(Pin 14 of IC2)
SND
(Pin 10 of IC2)
Q4
Collector
<Fig.103>
18
VL-GD001RU
TPB
TPF
Q4
Collector
ENV
Short P1 and P2 with 560~680 .
<Fig.104>
19
VL-GD001RU
6.4.1. Check IC2
Cross Reference:
Power Supply (P.12)
X1
Q18
Collector
Q11
Collector
X1
(Pin 8 of IC2)
TP5V
20
VL-GD001RU
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