1.2.6 Element substitution method
When some elements cannot be judged good or bad, substitution method may de adopted directly.
1.2.7 Comparison method
A same good PC board is usually used to test the correct voltage and waveform. Compared these
data with those tested through fault PC board, the cause of troubles may be found.
Through the above maintenance method, theoretical knowledge and maintenance experience, all
difficulties and troubles will be readily solved.
1.3 Required device for maintenance
Digital oscillograph (
100MHE)
TV set
SMD rework station
Multimeter
Soldering iron
Pointed-month pincers
Cutting nippers
Forceps
Electric screw driver
Terminals connecting cord
Headphone
Microphone
- 3 -
Summary of Contents for DV718SI
Page 1: ...service manual DV718SI...
Page 56: ...21 27M clock signal waveform diagram 22 Reset circuit waveform diagram URST Dv33 52...
Page 92: ...5 1 3 Surface layer of DECODE SERVO Board 88...
Page 93: ...5 1 4 Bottom layer of DECODE SERVO Board 89...
Page 95: ...C744 C750 C745 C753 C738 C737 C739 C743 C742 C740 C747 5 1 6 Bottom layer of HDMI Board 91...
