5.1.13. VARIABLE VOLTAGE ISOLATION TRANSFORMER
An Isolation Transformer should always be used during the servicing of Combination TV/DVD
whose chassis is not isolated from the AC power line. Use a transformer of adequate power
rating as this protects the technician from accidents resulting in personal injury from electrical
shocks. It will also protect Combination TV/DVD from being damaged by accidental shorting
that may occur during servicing.
Also, when troubleshooting the above type of Power Supply Circuit, a variable isolation
transformer is required in order to increase the input voltage slowly.
5.1.14. SPECIAL NOTE
All integrated circuits and many other semiconductor devices are electrostatically sensitive and
therefore require the special handling techniques described under the "ELECTROSTATICALLY
SENSITIVE (ES) DEVICES" section of this service manual.
5.1.15. MODEL NO. IDENTIFICATION MARK
Use Marks shown in the chart below to distinguish the different models included in this Service
Manual.
6. DISASSEMBLY/ASSEMBLY PROCEDURES
6.1. CABINET SECTION
6.1.1. Disassembly Flowchart
Perform all disassembly procedures in the order described in the "Disassembly Flowchart"
shown below. When reassembling, use the reverse procedure.
CAUTION:
Disconnect AC plug before disassembly.
Fig. D1
Summary of Contents for PV 20DF62
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Page 23: ...6 1 1 1 Notes in chart 1 Removal of DVD Ass y Fig D4 ...
Page 45: ...the black screen starts to turn gray lighting only 7 3 TEST POINTS AND CONTROL LOCATION ...
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Page 180: ...11 2 CHASSIS FRAME SECTION 2 ...
Page 181: ...11 3 CHASSIS FRAME SECTION 3 ...