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4-4. Self Diagnosis Function Indication & Contents
<Example of screen display>
SELF CHECK
23000XXX
TIME
POWER
BusCont
Block
Item
Indication of part code of microprocessor.
B) Part code
(QA01)
C) TIME
Total Time of Power on (hour)
D) POWER
Number of operation of power protection circuit
E) BUS CONT
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
F) BLOCK
result of self diagnosis is displayed on screen.
Besides, when "9" key on remote unit is pressed,
diagnosis operation is first executed once.
B
C
D
: 000
: OK
E
F
: UV V1 V2 V3 V4
PC
Fig. 1
Contents
Table 4
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
2
QA02 : E
PROM,
Q501 : MCD
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
Other Source
: Black
– 10 –
Instruction of results
H001 : MAIN TUNER,
QV01: AVSW,
= Red
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