Troubleshooting Diagnosis Function - Toshiba 26HL84 Service Manual

TROUBLESHOOTING DIAGNOSIS FUNCTION

1. DIAGNOSIS FUNCTION FOR LED INDICATION
LED
LED is lit in 1 second at
intervals of 1 second.
LED is lit in 0.5 at intervals
of 0.5 second.
LED is lit in 0.25 second at
intervals of 2 second.
LED is lit in 5 seconds at
intervals of 5 seconds.
High : Lighting Low : No Lighting
Short-circuit detection of BUS line
BUS line may possibly be short-circuit (SDA to SCL), or BUS line (SDA,
SCL) is grounded.
Overcurrent limiter detection
POWER terminal on TV microprocessor becomes LOW at 2 seconds or
more.
Interruption of FAN motor function detection
No. 53 terminal on TV microprocessor becomes HIGH for 30 seconds.
Abnormal sound detection
P4 terminal of QS10 becomes LOW for 15 seconds during Speaker is
activated.
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CAUSE