17
TROUBLESHOOTING
16
TROUBLESHOOTING
Is +5V supplied at IC301 pin#91?
NO
NO
YES
YES
Is VIDEO SW Pulse input at IC301
pin#70?
Is REC signal output from IC301
pin#94,95,89,90?
LP MODE: 89,90 Pin
SP MODE: 94,95Pin
Check video HEAD and Connector.
Is signal input into IC301
pin# 48,50,52,54,56?
Check POWER circuit.
Check IC501 pin#18.
Record video signal poor.
Check EE MODE.
YES
Is luminance and color signal
output from IC301 pin#78?
Replace IC301.
NO
NO
YES
2) VCR Part
YES
Is IC301 pin#80 REC(H) HIGH?
Check IC501 pin#45.
NO
4. AUDIO (Hi-Fi MODEL)
No sound in RF E-E mode
Is Audio signal output at IC602 pin
#3, 13?
A. No sound in E-E mode
a. RF E-E
Is Audio signal output at IC251
pin#16,17?
Are CLK and DATA obtained at
IC251 pin#42,43?
NO
Is 5V obtained at IC251 pin#40?
Replace IC251.
YES
YES
Is 12V obtained at IC251 pin#34?
NO
YES
Check POWER circuit.
YES
Is 5V obtained at IC051 pin#1?
Check Power circuit.
NO
Is there SIF signal at IC051 pin#2
in RF mode?
Check RF101.
NO
YES
Is there SIF signal out at IC051
pin#30, 31?
Check IC051.
NO
YES
YES
Check IC602.
NO
Check Output JACK.
YES
Summary of Contents for DF-8100
Page 5: ...7 TROUBLESHOOTING 6 TROUBLESHOOTING B Digital Board...
Page 16: ...28 CIRCUIT DIAGRAM 1 SERVO SYSCON SCHEMATIC DIAGRAM DVDR VCR...
Page 17: ...29 CIRCUIT DIAGRAM 2 AV IC SCHEMATIC DIAGRAM DVDR VCR...
Page 18: ...30 CIRCUIT DIAGRAM 3 Hi Fi SW IN OUT CIRCUIT SCHEMATIC DIAGRAM DVDR VCR...
Page 19: ...31 4 ADC DAC VIDEO AMP CIRCUIT DIAGRAM...
Page 20: ...32 CIRCUIT DIAGRAM 5 PIF CIRCUIT DIAGRAM...
Page 21: ...33 CIRCUIT DIAGRAM 6 FRONT PART SCHEMATIC DIAGRAM...
Page 22: ...34 CIRCUIT DIAGRAM 7 POWER SUPPLY SCHEMATIC DIAGRAM...
Page 23: ...35 CIRCUIT DIAGRAM 8 8602 CODEC...
Page 24: ...36 CIRCUIT DIAGRAM 9 TERMINATION...
Page 25: ...37 CIRCUIT DIAGRAM 10 DDR SDRAM...
Page 26: ...38 CIRCUIT DIAGRAM 11 RST AV ELINK CONNECTOR...
Page 27: ...39 CIRCUIT DIAGRAM 12 FLASH ATAPI...
Page 28: ...40 CIRCUIT SCHEMATICS 13 1394 PHY...
Page 29: ...41 CIRCUIT SCHEMATICS 14 POWER CONNECTOR...
Page 30: ...42 CIRCUIT SCHEMATICS 15 VIDEO DECORDER SAA7115...
Page 31: ...43 PCB CIRCUIT BOARD 1 MAIN PCB...
Page 32: ...44 PCB CIRCUIT BOARD 2 FRONT PANEL PCB...
Page 33: ...45 PCB CIRCUIT BOARD 4 MPEG PCB 3 POWER PCB...
Page 34: ...47 INSTRUMENT DISASSEMBLY 46 INSTRUMENT DISASSEMBLY...
Page 43: ...686 AHYEON DONG MAPO GU SEOUL KOREA C P O BOX 8003 SEOUL KOREA DAEWOO ELECTRONICS Corp...