46
45
TROUBLESHOOTING
3. VIDEO circuit
A. EE screen doesn't appear
EE MODE Picture NG
Is Video signal input into
JK101?
Is 5V supplied at IC102?
Is select signal input
at pin#10, 11 of IC102?
Check JK101, JK701 and RF101.
Check POWER 5V circuit.
Check IC601
pin #30,31.
NO
YES
YES
NO
NO
YES
Is Data, clock signal input
at pin #9, 10 of IC103?(RF)
YES
NO
Check
pin#10, 11 of IC601
Is video signal at
pin#3 of IC102?
YES
NO
Check PCB Pattern.
Is video output signal
at JK101?
YES
NO
Check M-PEG BOARD
Check IC 601
Is signal output from
pin #5 of P201?
Check RF Output.
Check LINE out.
YES
YES
Check PCB Pattern.
NO
b. Video part
1) EE screen does not appear
TROUBLESHOOTING
No broadcasting signal
received
Is the output at IC601 pin# 71(CLK),
72 (DATA) normal?
Is SIF,Video output at TMI(RF101)
pin#13,16 normal?
Check IC 601.
Check IC103.
Check IC104
YES
YES
NO
NO
NO
Is SIF signal at pin #5 of IC103?
Is C-SYNC signal at pin #58 of
IC 601?
Check TMI (RF101) Block.
NO
Check Video Buffer Q102
B. No broadcasting signal received
YES
YES
YES
2) No broadcasting signal received
Summary of Contents for DW-K3AD2N-DS
Page 8: ...11 BLOCK DIAGRAM...
Page 9: ...12 BLOCK DIAGRAM...
Page 10: ...13 BLOCK DIAGRAM P201 P201 IC201 A SW NJM4052BM IC101...
Page 14: ...17 BLOCK DIAGRAM...
Page 15: ...18 SCHEMATIC DIAGRAM...
Page 16: ...19 SCHEMATIC DIAGRAM...
Page 17: ...20 SCHEMATIC DIAGRAM...
Page 18: ...21 SCHEMATIC DIAGRAM...
Page 19: ...22 SCHEMATIC DIAGRAM...
Page 20: ...23 SCHEMATIC DIAGRAM...
Page 34: ...42 DISASSEMBLY 41 DISASSEMBLY DW K3BD2N DS DW K3BD2N DS...
Page 43: ...60 59 PCB CIRCUIT BOARD Mpeg SYSTEM parts PCB CIRCUIT BOARD 2 DW K3BD2N DS DW R632...
Page 44: ...62 61 PCB CIRCUIT BOARD Mpeg Audio parts PCB CIRCUIT BOARD Mpeg Video parts...