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RB1G CHASSIS
W800A/W801A/W802A/W804A/W805A/W806A/W807A/W808A/W809A
SAFETY NOTES
SECTION 1
1-2. 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
When repairing the LCD Panel on the wall, the panel must be secured using the
1-1. Warnings and Caution
1) 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
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
that contained in the operating instructions unless you are qualified to do so.
3)
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.
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.
4) 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.
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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.
• Correct hand placement while carrying the TV is very important for
safety and to avoid damages.
5) Components 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
!
Damaging the wires may cause a short circuit.
9) Protect the panel from ESD to avoid damaging the electronic circuit (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.
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.
operation is suspected.
Do not leave Power ON > 1 hour
5
Figure 1. TV is faced down on a cloth during repair.
RB1G CHASSIS
W800A/W801A/W802A/W804A/W805A/W806A/W807A/W808A/W809A
Safety Notes
1-4.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)
exposed metal parts to any exposed metal part having a return to chassis must
not exceed 0 5mA (500 microamperes)
1-3 Safety Check-Out
After correcting the original service problem, perform the following
safety checks before releasing the set to the customer:-
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 WT540A.
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
Leakage current can be measured by any one of the three methods:-
1) A commercial leakage tester such as the SIMPSON 229 or RCA WT540A.
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
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 inter board wiring to ensure that no wires are pinched or
contact high-wattage resistors.
3)Ch
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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 multimeter that have a 2 VAC range are suitable
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 multimeter that have a 2 VAC range are suitable
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
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
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operated digital multimeter that have a 2 VAC range are suitable.
(see Figure 2.)
(see Figure 2.)
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
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
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replacement of any such line cord to the customer.
7) Check the antenna terminals, metal trim, metalized 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
7) Check the antenna terminals, metal trim, metalized 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
hibit d
prohibited.
Figure 2. AC voltmeter to check AC leakage
6
RB1G CHASSIS
W800A/W801A/W802A/W804A/W805A/W806A/W807A/W808A/W809A
Safety Notes
1-5. How to Find a Good Earth Ground
1) A cold-water pipe is a guaranteed earth ground; the cover-plate retaining
screw on most AC outlet boxes is also at earth ground.
2) If the retaining screw is to be used as your earth ground verify that it is at
screw on most AC outlet boxes is also at earth ground.
2) If the retaining screw is to be used as your earth ground verify that it is at
1-7. Handling the FLEXIBLE FLAT CABLE (FFC)
When you insert / pull out FFC, please grasp a reinforcement board and main body of
FFC.
2) If the retaining screw is to be used as your earth ground, verify that it is at
ground by measuring the resistance between it and a cold-water pipe with an
ohmmeter. The reading should be zero ohms.
3) If a cold-water pipe is not accessible, connect a 60- to 100-watt trouble-
light (not a neon lamp) between the hot side of the receptacle and the
retaining screw Try both slots if necessary to locate the hot side on the line;
ground by measuring the resistance between it and a cold-water pipe with an
ohmmeter. The reading should be zero ohms.
3) If a cold-water pipe is not accessible, connect a 60- to 100-watt trouble-
light (not a neon lamp) between the hot side of the receptacle and the
retaining screw Try both slots if necessary to locate the hot side on the line;
retaining screw. Try both slots, if necessary, to locate the hot side on the line;
the lamp should light at normal brilliance if the screw is at ground potential
(see Figure 3).
the lamp should light at normal brilliance if the screw is at ground potential
(see Figure 3).
1-6. Lead Free Information
Figure 3. Checking for earth ground.
Please hold reinforcement board and
Please pull out FFC while pushing the
The circuit boards used in these models have been processed using Lead
Free Solder. The boards are identified by the LF logo located close to the
board designation.
Free Solder. The boards are identified by the LF logo located close to the
board designation.
Main Board
Main Board
Please hold reinforcement board and
plunge it to depths.
plunge it to depths.
Please pull out FFC while pushing the
button of both ends at the same time.
button of both ends at the same time.
Figure 4: LF Logo
Figure 5: LF logo on circuit board
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The servicing of these boards requires special precautions. It is strongly
recommended to use Lead Free Solder material in order to guarantee optimal
quality of new solder joints.
recommended to use Lead Free Solder material in order to guarantee optimal
quality of new solder joints.
< Insertion>
<Pull out>
RB1G CHASSIS
W800A/W801A/W802A/W804A/W805A/W806A/W807A/W808A/W809A
Safety Notes
SCREW +PSW
1-8. Instruction about Disassembling Smart Core
1. Remove screws.
3. Remove Smart Core Cover.
a) HG/MD/LK/LS/MW Model
b) TE Model
a) HG/MD/LK/LS/MW Model
SCREW +PSW
M3ｘ6
M3ｘ6
b) TE Model
SCREW +BVTP 3ｘ10
SCREW +BVTP 3ｘ10
SCREW +PSW M3ｘ6
（ONLY HG）
（ONLY HG）
Pull left side.
Don’t pull right side
Pull left side.
Smart Core Cover
Smart Core Cover
（ONLY HG）
Recommended disassemble position
ORNAMENT
Don’t pull right side.
have a hook only right side.
Lay the display face down on a
work surface that is lager than
the TV and make space in front
of ORNAMENT.
work surface that is lager than
the TV and make space in front
of ORNAMENT.
2 Take off Harness from Hook
have a hook only right side.
4. Remove Smart Core from SET.
a) HG/MD/LK/LS/MW Model
a) HG/MD/LK/LS/MW Model
b) TE Model
2. Take off Harness from Hook.
8
Rotate Smart Core to direction
unplug
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