Side Buttons Malfunction - Sony RB1G Service Manual

Troubleshooting

3-7. SIDE BUTTONS MALFUNCTION

HUS button
malfunction
Change HUS
NG?
■ Execute SIDE BUTTONS
i.Start Side Key check with diag sidekey_check.
ii.Push Side Key : CH+
when [MESSAGE] PLEASE PUSH [ CH+ ] KEY is displayed.
iii.Push Side Key : CH-
when [MESSAGE] PLEASE PUSH [ CH- ] KEY is displayed.
iv.Check that diag sidekey_check result OK is returned.
 When this check result is NG.
Check Harness on HUS and
B* Board properly connected
NG
Loose harness 
connect properly
↓
Check Harness pin Assignment
According to circuit.
OK
NG
Change Harness
W600A/ W603A/ W605A/ W607A/ W650A/ W651A/ W653A/
W654A/ W655A/ W656A/W657A/ W658A/ W670A/ W674A
(*)
Size B* Board Type
OTHERS EUROPE
24" BKX BKE
32" BKX BKE
42" BKX BKE
Probe at Key_AD line and
check the signal
OK
OK
Change B* Board
RB1G CHASSIS
JP
BKJ
BKJ
BKJ
207