Service Modes, Error Codes, and Fault Finding
5.
5.8.2
Power Supply
Set Not Working
Figure 5-5 Fault finding tree “Set not working”
Set Does Not Start Up
Figure 5-6 Fault finding tree “Set does not start up”
5.8.3
Deflection
One Thin Vertical Line
Quick check:
•
Set in protection mode.
•
LED blinking with error “3”.
Figure 5-7 Fault finding tree “One thin vertical line”
One Thin Horizontal Line
Quick check:
•
Set in protection mode.
•
LED blinking with error “2”.
Figure 5-8 Fault finding tree “One thin horizontal line”
Not Ok
Check fusible
resistor 3510 &
circuit before it
Check DC
voltage at
2505/2507
Ok
Ok
Check
fusible
resistor 3532
Check
7512
Check IC7511 &
IC7531
Set able to
start-up
Check other
fusible resistor
and capacitor in
the circuit
No
End
Yes
Not Ok
Ok
Check Power
Supply Mains
Switch
Bridge Rectifier
circuit 6500
E_14480_057.eps
190204
Set Unable
to Start
Fuse Blown?
Change
Fuse
Yes
Check
voltage
across 2552
Is Vbatt
approximately
140V
Check
voltage 2562
&2563
Yes
16V
No
Check Power
Supply circuit
Check 3V
across 2535
Check 6V
across 2535
Software
loaded?
No
Yes
Load
Software
Yes
Yes
Set able to
Start
Yes
Yes
End
Check Line
Transistor 7405
No
No
E_14480_058.eps
170204
One Thin Vertical Line
LED Blinking
Check Horizontal
Deflection
Circuitry
Is V
BE
between
200mV to 30mV & V
CB
approximately 500mV
Check
Line Transistor
7405
Yes
Check all
connection and
peripheral at
Deflection Circuit in
place
E_14480_059.eps
170204
Replace transistor
Check transistor
(7451, 7523, 7543) at
Vertical Deflection Circuitry
Check Vertical
Deflection Circuit
Replace transistor
E_14480_060.eps
170204
One Horizontal
Thin Line
LED Blinking
Check all connection
and peripheral at
Deflection Circuit
in place
Содержание L04LAA
Страница 36: ...Service Modes Error Codes and Fault Finding EN 36 L04L AA 5 E_06532_012 eps 130204 ...
Страница 58: ...58 L04L AA 7 Circuit Diagrams and PWB Layouts Layout Mono Carrier Part 1 Bottom Side Part 1 ...
Страница 93: ...Spare Parts List EN 93 L04L AA 10 10 Spare Parts List Not applicable ...
Страница 94: ...Revision List EN 94 L04L AA 11 11 Revision List First release ...