Toshiba 32WL46B, Service Manual

Page: 10 / 92

4-4. Self Diagnosis Function Indication & Contents
SELF CHECK
23000XXX
B
TIME
C
POWER : 000
D
BusCont : OK E
Block : UV V1 V2 V3 V4
F
PC
<Example of screen display>
Fig. 1
Item
B) Part code
C) TIME
D) POWER
E) BUS CONT
F) BLOCK
Contents
Indication of part code of micro
processor
.
(QA01)
Total Time of Power on (hour)
Number of operation of power protection circuit
Communication state of bus line
The sync signal part in each video signal supplied
from each block is detected.
Then by checking the existence or non of sync part, the
result of self diagnosis is displayed on
screen.
Besides, when “9” key on remote unit is
pressed,
diagnosis
operation is first executed once.
Instruction of results
Indication of“OK”for normal result
Indication of failure place in abnormality
(Failure place to be indicated)
QA02 NG, H001 NG, Q501 NG,
QV01 NG, Q4420 NG
H002 NG
QA02 : E 2 PROM, H001 : MAIN TUNER,
Q501 : MCD QV01: AVSW,
Q4420 : SCAN PROCESSOR
H002 : ITT,DSP,APRO
Note 1. The indication of failure place is only one
place though failure places are plural. When
repair of a failure place finishes, the next
failure place is indicated.
*Indication by color
Select Source
: Sync exists = Green
: No Sync = Red
Other Source
: Black
Table 4
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