Sony KLV-22BX300 Service Manual page 70

3-5. Tact SW Problem
H2LS NO FUNCTION
Check Wire Harness
And Connector
Connectivity?
OK
Check 3.3V
in PIN2, CN1
OK
*Check
Pin1 Voltage Level
in CN1
OK
Change BAA Board
NG
Change Wire Harness
And connect Properly
NG
Check 3.3V in JL5604
BAA Board
OK
NG
Change H2LS Board
NG
*VOLTAGE LEVEL FOR EACH PRESSED BUTTON
KEY Voltage
(average)
CH -
CH +
Vol -
Vol +
Input
Menu
No Input
-69-
KLV-22, 26, 32 BX300, 40 BX400
KLV-26,32 NX400(S/B), 32,40 NX500
Voltage range
0.00V 0.0000V
0.38V 0.3421 – 0.4178V
0.85V 0.7720 – 0.9403V
1.30V 1.1747 – 1.4268V
1.85V 1.6710 – 2.0229V
2.37V 2.1536 - 2.5988V
2.80V 2.8 – 3.3V
RM-GA019
RM-GA018