KD-60X690E Black RMT-TX300U UC2/LA1
KD-70X690E Black RMT-TX300U UC2/LA1
KD-60X695E Black RMT-TX300B AR4/LA8
KD-60X697E Black RMT-TX300B CO1
KD-60X6700E Black RMT-TX300E/300P AZ1/ME6/EA4
KD-70X6700E Black RMT-TX300E/300P AZ1/ME6/EA4
MODEL COLOR COMMANDER DEST. MODEL COLOR COMMANDER DEST.
These servicing instructions are for use by qualified service personnel only.
To reduce the ri sk o f ele ct ri c sho c k, d o not perfo r m any se r vici ng other than t hat c o nta ine d i n the op e ra ti ng instr uc tio ns unless you are qualified to do so.
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.
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.
SAFETY-RELATED COMPONENT WARNING!!
Components identified by shading and ! mark on the schematic diagrams, 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.
When re pa ir ing the LCD p a nel, b e sure you ar e gr o und ed b y using a wrist b and .
When repa ir ing the LCD p a nel o n the wall, the LCD panel must b e sec ur ed using the 4 mounting ho le s o n the r ea r c o ver .
1) Do not press on 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 l eave the module in high t emperatures or in areas of high humidity for an extended perio d of time.
4) Do not expose the LCD panel to direct sunlight.
5) Avoid contact with water. It may cause a 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.
9) Protect the panel from ESD to avoid damaging the electronic circuit (C-MOS).
10) It is recommended not to exceed 1 hour of Power-On nor Burn-in period with LCD panel face down conditio n, in repair activity.
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 touching high-wattage resistors.
3. Check that all control knobs, shields, covers, ground straps, and mounting hardware have been replaced. Be absolutely certain that you have replaced all the insulators.
4. Look for unauthorize d replacement parts, particularly transistors, that were installed during a pre vious repair. Point them out to the customer and recommend their replacement.
5. Look for par ts which, though functio ning, show obvi ous s igns o f d et er io r ati o n. P o int them out to the cust o mer a nd re c ommend 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 other exposed metal parts for AC leakage. Check leakage as described below.
8. For safety reasons, repairing the Power board and/or Inve rt er board is prohibited.
(To protect electric shock when customer touch the term inal.)
Leakage current can be m easured by V: Voltmeter or oscilloscope (r.m.s. or peak reading)
Stabilized power supply instrument and isolated voltage transformer: Use too much current capacity and
isolated voltage transformer does not need to use stabilized power supply equipment Specification of RMS v olt
meter: Input resistance > 1 M ohm, Input capacitance < 200 pF, Frequency range: 15 Hz – 1MHz (Refer Figure
A). Isolated type volt -m eter (FLUKE 8921A etc *1)
*1 Not use FLUKE 8920A that connected to protective earth by diode
# Leakage current of measurement instrument is less than 10μArms when under test equipment AC plug is
opened # Set up the following condition and turn on the set.
Applied voltage: Nominal input voltage (Description on Nameplate) # Measure the leakage current between
one phase conductor and neutral for terminal A and terminal B.
Read rms value, and then calculate to peak value PEAK VALUE =√2 RMS VALUE
Comply with the following requirement Class II equipment (2-pin plug): for each terminal, the worst value of
measurement must not exceed AC 350uA peak). Note: including AC adaptor, AC adaptor/DC operated unit
combination
How to Find a Good Earth Ground
A cold-water pipe is a guaranteed earth ground; the cover-plate retaining screw on most AC outlet boxes is also
at earth ground.
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.
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; the
lamp should light at normal brilliance if the screw is at ground potential (see Figure B).
Since the diagnostic results displayed on the screen are not automatically cleared, always check the self-diagnostic screen.
After you have completed the repairs, clear the result display to “0”.
Clearing the Self Check Diagnostic List
1. Error history and Error count : Press the Channel 8 => Channel 0 .
2. Panel operation time : Press the Channel 7 => Channel 0 .
Exiting the Self-diagnostic screen
To exit the Self Diagnostic screen, turn off the power to the TV by pressing the POWER button on the remote or the POWER button on the TV.