FLOW CHART
41
F. TROUBLESHOOTING OF LUMINANCE IN THE PLAYBACK MODE.
NO
YES
NO
Check IC301, PCB
pattern and adjacent circuit
Check the ON/OFF +5V
Is ON/OFF +5V supplied to
pin
y
and pin
}
of IC301?
NO
Is the RF signal from pin
3
of
IC401 fed to pin
5
of IC301?
NO
YES
Check IC301
Is the luminance signal from
q
fed to pin
u
of IC301?
YES
To OSD circuit
YES
NO
Check Q302 and
adjacent circuit
Is the luminance signal from pin
5
fed to pin
0
of IC301
through pin
7
of IC301?
Is the luminance signal from pin
Q
fed to pin
q
of IC301
through Q302?
YES
NO
Check Q302 and
adjacent circuit
Is the luminance signal from pin
Q
fed to pin
q
of IC301
through Q302?
YES
Is the RF signal obtained from
pin
3
of IC401?
NO
YES
TO PRE-AMP IN THE
PLAYBACK MODE
Check Q305, adjacent
and PCB pattern
* The pin # of IC401 is changed according to SET.
DV-K884W (6 Heads) : LA70020 (36PIN DIP)
DV-K484W (4 Heads) : LA70011 (24PIN DIP)
DV-K284W (2 Heads) : LA70001 (24PIN DIP)
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NOTE: Refer to 74page, Hi-Fi/PRE-AMP CIRCUIT DIAGRAM.
Содержание DV-K*04W Series
Страница 71: ...CIRCUIT DIAGRAMS 68 SECTION 9 CIRCUIT DIAGRAM 9 1 CONNECTION DIAGRAM DV K884W K484W K284W ...
Страница 72: ...CIRCUIT DIAGRAMS 69 9 2 POWER CIRCUIT DIAGRAM DV K884W K484W K284W ...
Страница 73: ...CIRCUIT DIAGRAMS 70 9 3 SYSCON AND LOGIC CIRCUIT DIAGRAM ...
Страница 74: ...CIRCUIT DIAGRAMS 71 9 4 PIF CIRCUIT DIAGRAM DV K884W K484W K284W ...
Страница 75: ...CIRCUIT DIAGRAMS 72 9 5 IF MPX MODULE CIRCUIT DIAGRAM DV K884W K484W K284W ...
Страница 76: ...CIRCUIT DIAGRAMS 73 9 6 VIDEO AUDIO CIRCUIT DIAGRAM DV K884W K484W K284W ...
Страница 77: ...CIRCUIT DIAGRAMS 74 9 7 Hi Fi PRE AMP CIRCUIT DIAGRAM DV K884W K484W K284W ...
Страница 78: ...DISASSEMBLY 79 SECTION 11 DISASSEMBLY 11 1 PACKING ASS Y ...
Страница 79: ...DISASSEMBLY 80 11 2 FRONT PANEL ASSEMBLY ...