(No.YA535)1-31
SECTION 5
TROUBLESHOOTING
5.1
SELF CHECK FEATURE
5.1.1 OUTLINE
This unit comes with the "Self check" feature, which checks the operational state of the circuit and displays/saves it during
failure.Diagnosis is performed when power is turned on, and information input to the main microcomputer is monitored at all time.
Diagnosis is displayed in 2 ways via screen display and LED flashes. Failure detection is based on input state of I
2
C bus and the
various control lines connected to the main microcomputer.
5.1.2 SELF CHECK MODE MENU FLOW CHART
Fig.5-1
5.1.3 HOW TO ENTER THE SELF CHECK MODE
Before entering the Self check Display mode, confirm that the setting of
MODE
SW of the REMOTE CONTROL UNIT is at the
"TV"
side. If the switches have not been properly set, you cannot enter the Self check Display mode.
<SELF CHECK MODE(TV-MICRO)>
(1) Set to "
0 minutes
" using the
[SLEEP]
key.
(2) Press the
[VIDEO STATUS]
key and
[DISPLAY]
key
simultaneously, then enter the SERVICE MODE.
(3) Press the
[1]
key in the TV-MICRO SERVICE MODE.
(4) Press the
[2]
key in the SELF CHECK MODE(TV-MI-
CRO).
<SELF CHECK MODE(DIGITAL)>
(1) Set to "
0 minutes
" using the
[SLEEP]
key.
(2) Press the
[VIDEO STATUS]
key and
[DISPLAY]
key
simultaneously, then enter the service mode.
(3) Press the
[3]
key in the DIAGNOSTICS MODE.
(4) Press the
[2]
key in the SELF CHECK MODE(DIGITAL).
SERVICE MODE
SCREEN
TV-MICRO SERVICE
MODE SCREEN
Press [1] key
Press [3] key
DIAGNOSTICS MODE SCREEN
Diagnostic
1. I2C Bus Stop
2. Self Check
3. Version
4. USB Device Log
SERVICE MENU
SERVICE MENU
1. TV-Micro Service
1. TV-Micro Service
2. Digital Service
2. Digital Service
3. Digital Diagnostics
3. Digital Diagnostics
4. Digital Engineering Functions
4. Digital Engineering Functions
SELF CHECK MODE(DIGITAL)
SCREEN
Press [2] key
Press [2] key
SELF CHECK MODE(TV-MICRO)
SCREEN
Self Check -- DTM 1/1
BTSC Dec
OK
Comp. ADC
NG 2
NVM
ECCErr Cnt 0x00000000
Repair Cnt 0x00000000
SVC2
ECCErr Cnt 0x00000000
Repair Cnt 0x00000000
Previous/Next Page [BACK]Back [MENU]Exit
Item
Failure history
Failure history
Item
CHECK
Normality=OK
Abnormality=NG
TV-Micro Service
TV-Micro Service
1. ADJUST
1. ADJUST
2. SELF CHECK
2. SELF CHECK
3. I2C STOP
3. I2C STOP
LOB 0 FAN 0
LOB 0 FAN 0
AUD 0
AUD 0
ANA 9 DIG 9
ANA 9 DIG 9
0000 0
0000 0
0
0
