Sony KLV-40ZX1 Service Manual ▷ View online
KLV-40ZX1 (CH) 2-7
Button malfunction
on the TV
Check key clicking
of the unit
Check the harness
between B board and
H1L board
Replace the
H1L Board
B Board
Harness
H1L Board
Key assembly with
mechanism or
H1L Board
OK
OK
NG
NG
NG
OK
2-1-6. TV AND COMMANDER BUTTONS MALFUNCTION
1) TV button malfunction
2) IR remote commander button malfunction
Button malfunction
of the IR remote
commender
Visual check the
sensor portion
Replace the
H4L Board
B Board
harness
H4L Board
Replace the
mechanism of the
remote commander
OK
OK
NG
NG
NG
OK
Check the harness
between the B board
and the H4L board
KLV-40ZX1 (CH) 2-8
3) RF Remote Commander Button Malfunction
Button malfunction
of the RF remote
commander
Remove the remote
commander batteries
and then reinstall the
batteries
Check the harness
B Board
Harness
OK
Replace the RF remote
commander module
Delete with multi remote
commander registration
Registry the multi
remote commander
registration again
NO
NO
NO
KLV-40ZX1 (CH) 2-9
2-2. MEDIA RECEIVER (MBT-W1A)
2-2-1. FLOW CHART
YES
YES
NO
YES
START
Does the power led
stay on when the TV is
switched on ?
Is the picture and
sound OK ?
END
Do the buttons
on the TV & remote
commander work
properly?
Is the standby led
blink ?
See
2-2-3. Standby Led Blink
2-2-3. Standby Led Blink
See
2-2-2. No Power
2-2-2. No Power
See
2-2-5. No Picture
2-2-5. No Picture
No Sound
See
2-2-6. TV/commander
button malfunction
2-2-6. TV/commander
button malfunction
NO
YES
NO
NO
Is the LINK led
blink ?
See
2-2-4. No LINK
2-2-4. No LINK
YES
NO
KLV-40ZX1 (CH) 2-10
OK
2 times Blinkings
BC Board
Replace
the BC Board
OK
10 times Blinkings
BC Board
Replace
the BC board
2-2-2. NO POWER
2-2-3. STANDBY LED BLINK
1) 2 times Blinkings
2) 10 times Blinkings
NG
No POWER
Replace
the BC Board
Replace
the HK1 Board
HK1 Board
BC Board
OK
OK
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