PRA-BD11
47
5
6
7
8
5
6
7
8
C
D
F
A
B
E
SIDE A
DOOB ASSY
B
5. Points to check during servicing
Checker chips are provided for various power supplies, ground, and clock signals for easier measuring with an oscilloscope
using a probe.
Major points to measure
Pin No.
Signal Name
Description
TP8601
+5V
Power supply (input of CN8601)
TP8602
GND
Ground
TP8603
+5V
Power supply (after the overcurrent protection circuit passage)
TP8604
+3.3V
Power supply (c5V to +3.3V by regulator)
TP8605
+2.5V
Power supply (c5V to +2.5V by regulator)
TP8606
GND
Ground
TP8608
27MHz CLK
27MHz clock
TP8607
36.864MHz CLK
36.864MHz clock (generates from 27MHz clock)
TP8609
18.432MHz CLK
18.432MHz clock
TP8610
GND
Ground
Summary of Contents for PRA-BD11
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Page 21: ...PRA BD11 21 5 6 7 8 5 6 7 8 C D F A B E ...
Page 23: ...PRA BD11 23 5 6 7 8 5 6 7 8 C D F A B E B 1 2 2 2 B 2 2 B 2 2 B 2 2 B 2 2 B 2 2 B 2 2 B 2 2 B ...
Page 25: ...PRA BD11 25 5 6 7 8 5 6 7 8 C D F A B E B 2 2 1 2 B 1 2 B 1 2 B 1 2 B ...