Sony KDL-46HX920 / KDL-46HX923 / KDL-46HX925 / KDL-55HX920 / KDL-55HX923 / KDL-55HX925 / KDL-65HX920 / KDL-65HX923 / KDL-65HX925 Service Manual ▷ View online
SEGMENT : 2b-1
MODEL
KDL 46HX920
SEGMENT.: 2b 1
PART NO. : 9-888-130-05
MODEL
KDL 65HX920
KDL-46HX920
KDL-46HX923
KDL-46HX925
KDL-55HX920
KDL-46HX923
KDL-46HX925
KDL-55HX920
KDL-65HX920
KDL-65HX923
KDL-65HX925
KDL-65HX923
KDL-65HX925
KDL-55HX923
KDL-55HX925
KDL-55HX925
NO
SUFFIX
DATE
SUPP/CORR
DESCRIPTION
1
01
2011/3
1
-01
2011/3
--
1st Issue
Part Information Change: Change alphabet at:
1)
Part Information Change: Change alphabet at:
1)
Cover Page
2)Headings
(Page 2~61)
2
-02
2011/4
Corr-1
)
g
(
g
)
3)Exploded View Part List
(55, 58, 60, 61)
3
-03
2011/7
Supp-1
Add Cable Conversion
(Pg 60, 61)
Corr-2
Modify Wireless Lan Card and Antenna Information (
Pg 54, 57
)
Corr 2
Modify Wireless Lan Card and Antenna Information (
Pg 54, 57
)
Part Information Addition: Add KDL-65" model
(Pg 10 ~22,
23~24, 26~27, 62~74),
Title Change
(Pg 46)
Part Information Change: Figure No
(Pg 3~4)
-04
4
Supp-2
2011/8
Part Information Change: Figure No
(Pg 3~4)
,
Part list Numbering
(Pg 57)
Corr-3
SEGMENT : 2b-1
SEGMENT.: 2b 1
PART NO. : 9-888-130-05
NO
SUFFIX
DATE
SUPP/CORR
DESCRIPTION
Revision History Revised to add model
(Revision History)
Cover Pg Revised to add model
(Cover Pg)
5
-05
2011/8
Supp-3
Cover Pg Revised to add model
(Cover Pg)
MODEL
COMMANDER
DEST
MODEL
COMMANDER
DEST
SEGMENT: 2b-1
KDL-46HX920
RM-GD017
Hong Kong
KDL-65HX920
RM-GD017
Hong Kong
KDL 46HX920
KDL-46HX923
KDL-46HX923
RM-GD017
Saudi Arabia, Nigeria
KDL-46HX925
RM-GD017
Sogul Area, SIngapore, Indonesia, Vietnam,
Phillippines, South Africa, India, Malaysia,
Thailand.
Phillippines, South Africa, India, Malaysia,
Thailand.
KDL-55
H
X920
RM-GD017
Hong Kong
KDL 65HX920
KDL-65HX923
RM-GD017
Saudi Arabia / Nigeria
KDL-65HX925
RM-GD017
Sogul Area, Singapore, Indonesia,
Vietnam,Phillipines, South Africa, India, Thailand,
Malaysia, Australia, New Zealand.
Vietnam,Phillipines, South Africa, India, Thailand,
Malaysia, Australia, New Zealand.
KDL 55
H
X920
KDL-55
H
X923
RM-GD017
Saudi Arabia, Nigeria
KDL-55
H
X925
RM-GD017
Sogul Area, SIngapore, Indonesia, Vietnam,
Phillippines, South Africa, Malaysia, Thailand,
Australia, New Zealand, India.
Phillippines, South Africa, Malaysia, Thailand,
Australia, New Zealand, India.
SAFETY NOTES
SECTION 1
KDL- 46, 55
H
X920, 46, 55
H
X923 , 46, 55
H
X925
RM-GD017
1-1. 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.
3)Check all control knobs, shields, covers, ground straps and mounting
hardware have been replaced. Be absolutely certain you have replaced all
the insulators.
4) Look for unauthorized replacement parts, particularly transistors that were
installed during a previous repair. Point them out to the customer and
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
recommend their replacement.
5) Look for parts which, though functioning show obvious signs of deterioration.
Point them out to the customer and recommend their replacement.
6) Check the line cords for cracks and abrasion. Recommend the replacement
of any such line cord to the customer.
7) Check the antenna terminals metal trim metallized knobs screws and all
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
7) Check the antenna terminals, metal trim, metallized knobs, screws and all
other exposed metal parts for AC leakage. Check leakage test as described
next.
8. For safety reasons, repairing the Power board and/or Inverter board is prohibited.
(C-MOS).
10) During the repair, DO NOT leave the Power On or Burn-in period for more than
1 hour while the TV is face down on a cloth.
1-3. Leakage Test
The AC leakage from any exposed metal part to earth ground and from all exposed
metal parts to any exposed metal part having a return to chassis must not exceed
0.5mA (500 microamperes).
Leakage current can be measured by any one of the three methods:-
1 A commercial leakage tester such as the SIMPSON 229 or RCA WT-540A
1. A commercial leakage tester such as the SIMPSON 229 or RCA WT 540A.
Follow the manufacturers instructions to use those instructions.
2. A battery-operated AC milliampmeter. The DATA PRECISION 245 digital
multimeter is suitable for this job.
3. Measuring the voltage drop across a resistor by means of a VOM or battery
operated AC voltmeter. The 'limit' indication is 0.75V so analog meters must
have an accurate low voltage scale. The SIMPSON'S 250 and SANWA
SH-63TRD are examples of passive VOMs that are suitable. Nearly all
battery operated digital multimeters that have a 2 VAC range are suitable.
(see Figure
2
.)
Figure 1. TV is faced down on a cloth during repair.
1-2. Safety Check-Out
After correcting the original service problem, perform the following safety checks
before releasing the set to the customer:-
1) Check the area of your repair for unsoldered or poorly soldered connections.
Check the entire board surface for solder splashes and bridges.
2) Check the interboard wiring to ensure that no wires are pinched or contact
high-wattage resistors.
Figure 2. AC voltmeter to check AC leakage
3