Sony BVW-55 Maintenance Manual page 35

DM-121 Board
P N M
E102
TEST
Factory-set
S101
TP104
TEST
Factory-set
S301
TP304
E302
Switches
n
Do not change settings of the factory-use switches.
Ref.No. Switch name
S101 Y EQ TEST
S301 C EQ TEST
S501
S901-1 ADJ
S901-2
S901-3 AGC OFF
S901-4
BVW-55
L K J
Factory-set
S501
S901
1
2
ON
3
4
Description
Test signal connection switch for Y RF LPF&EQ adjustment
In adjusting, input the test signal to TP104 (GND to E102) with
S101 set to TEST (see illustration) position
Test signal connection switch for C RF LPF&EQ adjustment
In adjusting, input the test signal to TP304 (GND to E302) with
S301 set to TEST (see illustration) position
Factory use
Use for RF EQ adjustment.
OFF: Normal mode
ON: Adjustment/Test mode
Factory use
Turns on and off the AGC function during RF EQ adjustment
OFF: Normal mode (AGC is turned on)
ON: AGC is turned off
Factory use
H G F E
1-9. Settings for Internal Switches/Slit Lands
D C B
ON
ON
S1701 S1801
1 2 3 4 5 6 7 8
1 2 3 4
DM-121 Board (Side B)
Factory setting
See illustration
See illustration
OFF
OFF
OFF
OFF
OFF
A
1
2
3
4
5
6
7
1-25