Section 3: Software Update And Service Adjustments; Protection Shutdown; Standby Led Flash Count; Diagnostic Table - Sony KDL-32BX330 Service Manual

SECTION 3: SOFTWARE UPDATE AND SERVICE ADJUSTMENTS

3-1. 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.
The Diagnostic Table provides guidance in
locating the possible component causing the
shutdown.
KDL-32BX330/32BX331

3-1-1. STANDBY LED FLASH COUNT

LED DISPLAY
BLINK COUNT
2 times
5 times
LED ON 0.3 sec.
LED OFF 0.3 sec.

3-1-2. DIAGNOSTIC TABLE

The Diagnostic Table provides an overview of the
number of times the standby LED blinks and the
possible location.
Number of times
Standby LED
Diagnostic Item
MAIN_POWE
USB
SPEAKER_UNBAL
PANEL_VCC
BACKLITE
AUDIO_AMP
MAIN_MICRO
DIAGNOSTIC TABLE
3-1-3. ACCESSING THE SELF DIAGNOSIS
HISTORY
The Self Diagnosis screen can only be accessed
from the Service Mode screen. Refer to
"3-2. Accessing Service Mode" on page 33
instructions.
KDL-32BX330/32BX331
Standby LED
LED OFF
3 sec.
blinks Possible Location
2 Power Supply Board
3 Main Board
4 Main Board
5 LCD Panel Module
6 LCD Panel Module
8 Main Board
9 Main Board
for
32