3.2.5 Linearity Failure
3.2.5.1 Horizontal Linearity Failure
CS8
CS7
CS6
CS5
CS4
CS3
CS2
CS1
64pin
63pin
62pin
61pin
60pin
59pin
58pin
57pin
Q562
Q561
Q566
Q565
Q568
Q567
Q563
Q564
1
31.5
H
L
L
L
L
L
L
L
2
46
L
L
L
H
L
H
L
H
3
60
L
H
L
L
H
L
H
H
4
69
H
L
H
L
L
H
H
H
5
80
L
L
H
H
L
H
H
H
6
91
H
L
H
L
H
H
H
H
7
93
L
H
H
L
H
H
H
H
8
106
H
L
L
H
H
H
H
H
9
112
L
L
H
H
H
H
H
H
10
120
H
L
H
H
H
H
H
H
Preset
No.
Fh
[kHz]
Expected failure point
IC102 on the MAIN PWB or peripheral circuits
CS switching FET Q561 to Q568 are H: Off, L: ON
NG
Expected failure point
1) Relation of Character S capacitor changeover
Q561- Q568, C564- C568, C576-C578 or C580 on the MAIN PWB, or
peripheral circuits
2) Relation of linearity coil control
Q560, L561, IC101 or peripheral circuits
Check the horizontal frequency band selector.
Check voltage at Pins 57-64 of IC102 on the MAIN PWB.
OK
3-9
Summary of Contents for DPro2070SB
Page 22: ...1 15 Fig 7 The principle of DDCC compensation ...
Page 23: ...1 16 Fig 8 a DDCC adjustment item ...
Page 24: ...1 17 Fig 8 b DDCC adjustment item ...
Page 25: ...1 18 Fig 9 DDCC circuit diagram ...
Page 103: ...4 Wave form 1 POWER 2 CONTROL MAIN 3 DEFL MAIN 4 DEFL SUB COIL DRIVE MAIN 5 VIDEO ...