Safety Notes; Safety-Related Component Warning - Sony XBR-55X900H Service Manual

2020/06/27 06:31:32 (GMT+09:00)
1-1. Warnings and Caution
1)CAUTION :These servicing instructions are for use by qualified
service personnel only.
2)To reduce the risk of electric shock, do not perform any servicing other
than that contained in the operating instructions unless you are qualified to
do so.
3)WARNING!! : An isolation transformer should be used during any
service to avoid possible shock hazard, because of live chassis. The
chassis of this receiver is directly connected to the ac power line.
The replaceable fuse could be in the neutral of the mains supply. When
replacing the fuse, the mains shall be disconnected for de-energize the
phase conductors.
(*Except AC ADAPTOR, Because it does not carry out replacing an
internal fuse.)
4) CARRYING THE TV : Be sure to follow these guidelines to protect
your property and avoid causing serious injury :
• Carry the TV with an adequate number of people; larger size TVs
require two or more people.
•Correct hand placement while carrying the TV is very important
for safety and to avoid damages.

5) SAFETY-RELATED COMPONENT WARNING!!

identified by shading and ! mark on the exploded views, and in the parts
list are critical for safe operation. Replace these components with Sony
parts whose part numbers appear as shown in this manual or in
supplements published by Sony. Circuit adjustments that are critical for
safe operation are identified in this manual. Follow these procedures
whenever critical components are replaced or improper operation is
suspected.
6) IMPORTANT REMINDER FOR TV MAINBOARD REPLACEMENT :
It is mandatory for service centers to confirm the TV's system information
after each repair carried out with Mainboard replacement.
SECTION 1
S E C T I O N 1
S A F E T Y N O T E S
: Components
SECTION 2 SECTION 3
Whenever a TV Main board is replaced, the correct TV Model and Serial
number must be reinserted into memory.
This is a MANDATORY procedure that each service center must apply.
Please refer to the chapter of ADJUSTMENT in this service manual to find
out how to set the model number and serial number in service mode.
1-2-1. Caution Handling of LCD Panel
When repairing the LCD Panel, make sure you are grounded with a wrist
band.
When repairing the LCD Panel on the wall, the panel must be secured
using the 4 mounting holes on the rear cover.
1) Do not press the panel or frame edge to avoid the risk of electric
shock.
2) Do not scratch or press on the panel with any sharp objects.
3) Do not leave the module in high temperature or in areas of high humidity
for an extended period of time.
4) Do not expose the LCD panel to direct sunlight.
5) Avoid contact with water. It may cause short circuit within the module.
6) Disconnect the AC power when replacing the backlight (CCFL) or
inverter circuit. (High voltage occurs at the inverter circuit at 650Vrms)
7) Always clean the LCD panel with a soft cloth material.
8) Use care when handling the wires or connectors of the inverter circuit.
Damaging the wires may cause a short circuit.
9) Protect the panel from ESD to avoid damaging the electronic circuit
(C-MOS).
SECTION 4 SECTION 5
5
SECTION 6
SYS SET