17
TSP-16
5
6
7
8
5
6
7
8
A
B
C
D
E
F
Display Trouble
LED is not lit
Is there more than one
abnormal LED display?
Are all LEDs that are controlled
with the same GRID signal abnormal?
[
S
ee 4.4 MATRIX TABLE]
Yes
Yes
Yes
Are all LEDs that are controlled
with the same
S
EG signal abnormal?
[
S
ee 4.4 MATRIX TABLE]
Identify the abnormal part in the
"6.1 TE
S
T MODE"
Failure in the LED, high-side drive circuit
Failure in the LED, low-side drive circuit
Failure in IC2000, IC7
3
00,IC7
3
01,IC7
3
02
and peripheral circuit
Failure in IC2000 and peripheral circuit
Failure in the LCD (CWX4
3
52)
Failure in the LEDs for the abnormal part
and peripheral circuit
Failure in the LED control microcomputer
(IC
8
005)or failure in the LED, high-side
drive circuit
Failure in the LED control microcomputer
(IC
8
005) or failure in the LED, low-side
drive circuit
No
No
No
LCD does not display / LCD display is abnormal
Yes
Is the target GRID signal normal?
[Observation point
A
etc.]
No
No
Is the target
S
EG signal normal?
[Observation point
etc.]
Is the LVD
S
signal normal?
[Observation point
@
]
Is the V***LCD voltage normal?
[
S
ee 10.
3
5 VOLTAGE
S
]
Yes
Yes
Yes
Is the RGB666 signal normal?
[Observation point
%
8
$
0
]
Yes
Yes
No
Failure in IC7100 and peripheral circuit
No
No
Failure in the LEDs for the abnormal part
and peripheral circuit
Is the voltage of V+5R1D_BL normal?
[
S
ee 10.
3
5 VOLTAGE
S
]
No
Failure in IC7101 and peripheral circuit
Failure in IC2000 and peripheral circuit
Yes
Is the LCD_PWM signal normal?
[Observation point
>
/
]
No
Yes
