Protection Shutdown; Standby Led Flash Count - Sony KDL-32BX320 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
Stand-By 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 following list contains the protect circuits and
diagnostics codes used in the models listed in this manual.
5-4. Protection Shutdown Flowchart on page 34
locating the possible component causing the shutdown.
KDL-32BX320/32BX321/32BX420/32BX421/40BX420/40BX421/46BX420/46BX421
SECTION 4 - TROUBLESHOOTING

STANDBY LED FLASH COUNT

Figure
provides guidance in
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
26