FLOW CHART
23
4-3. L
OGIC
C
IRCUIT
NO
Is +5.8V supplied
fdrom D509 cathod?
Check power Module
Check power
Module
Check power
Module
Check power
Module
YES
Check IC501
and change.
YES
Digitron does
not operate.
Is +5V supplied to
pin
c
of IC501?
YES
Is 24V supplied to
pin
C
of IC501?
YES
Are -20 and -16.5V
supplied to pin
e
and
!
of G701?
A.
Check key matrix
circuit.
Digitron is lit keys do
not operate.
Is each key pulse
applied to pin
Gg
H
and
h
of IC501?
B.
YES
Check the pin serial of
pin
A
,
a
of IC501
Summary of Contents for DV-K*04W Series
Page 71: ...CIRCUIT DIAGRAMS 68 SECTION 9 CIRCUIT DIAGRAM 9 1 CONNECTION DIAGRAM DV K884W K484W K284W ...
Page 72: ...CIRCUIT DIAGRAMS 69 9 2 POWER CIRCUIT DIAGRAM DV K884W K484W K284W ...
Page 73: ...CIRCUIT DIAGRAMS 70 9 3 SYSCON AND LOGIC CIRCUIT DIAGRAM ...
Page 74: ...CIRCUIT DIAGRAMS 71 9 4 PIF CIRCUIT DIAGRAM DV K884W K484W K284W ...
Page 75: ...CIRCUIT DIAGRAMS 72 9 5 IF MPX MODULE CIRCUIT DIAGRAM DV K884W K484W K284W ...
Page 76: ...CIRCUIT DIAGRAMS 73 9 6 VIDEO AUDIO CIRCUIT DIAGRAM DV K884W K484W K284W ...
Page 77: ...CIRCUIT DIAGRAMS 74 9 7 Hi Fi PRE AMP CIRCUIT DIAGRAM DV K884W K484W K284W ...
Page 78: ...DISASSEMBLY 79 SECTION 11 DISASSEMBLY 11 1 PACKING ASS Y ...
