Protection Shutdown; Standby Led Flash Count - Sony KDL-32EX729 Service Training Manual

PROTECTION SHUTDOWN

Self Diagnosis
Supported model
Critical voltages and circuit operations are monitored by the CPU
on the Main Board. If a fault is detected the Self-Diagnostic function
in the TV will force the TV to shut down by the CPU. The monitored
circuit in which the fault occurred will cause the CPU to flash the
standby LED in groups of repeating sequences. The number of
blinks in these groups identifies which voltage or circuit caused the
protection event.
Not all of the available protect codes are used in every model. For
example, models that are LED backlit do not use the 4-blink balancer
error as this circuit is found in models that are backlit with fluorescent
lamps. The information in this section contains the protect circuits
and diagnostics codes used in the models listed in this manual.
"Figure 4-3. Diagnostic Table" on page 36
locating the possible component causing the shutdown.
KDL-32EX729/40EX729/46EX729
SECTION 4 - TROUBLESHOOTING

STANDBY LED FLASH COUNT

provides guidance in
Ambient Sensor/ Picture Off /
(IR) Infrared Receiver Timer LED
FIGURE 4-1. LED DISPLAY
2 times
5 times
LED ON 0.3 sec.
LED OFF
LED OFF 0.3 sec.
3 sec.
FIGURE 4-2. BLINK COUNT
Standby LED Power LED
34