16
TROUBLESHOOTING
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 Digital board(No sound in
E-E mode)
NO
Check Output JACK.
YES
Summary of Contents for DF-4500
Page 5: ...4 TROUBLESHOOTING 2 SYSTEM CIRCUIT...
Page 6: ...5 TROUBLESHOOTING P303 Check REMOCON_IN Pin2...
Page 7: ...6 TROUBLESHOOTING B Digital Board Mpeg...
Page 28: ...27 CIRCUIT DIAGRAM 1 SERVO SYSCON SCHEMATIC DIAGRAM VE1 0 PAL RW COMBO...
Page 29: ...28 CIRCUIT DIAGRAM 2 AV IC SCHEMATIC DIAGRAM VE1 0 PAL RW COMBO...
Page 30: ...29 CIRCUIT DIAGRAM 3 Hi Fi SW IN OUT CIRCUIT SCHEMATIC DIAGRAM VE1 0 PAL RW COMBO...
Page 31: ...30 4 ADC DAC VIDEO AMP IC SCHEMATIC DIAGRAM VE1 0 PAL RW COMBO CIRCUIT DIAGRAM...
Page 32: ...31 CIRCUIT DIAGRAM 5 FRONT PART SCHEMATIC DIAGRAM VE1 0 PAL RW COMBO...
Page 33: ...32 CIRCUIT DIAGRAM 6 TUNER NICAM SCHEMATIC DIAGRAM VE1 0 PAL RW COMBO...
Page 34: ...33 CIRCUIT DIAGRAM 7 POWER SUPPLY SCHEMATIC DIAGRAM...
Page 46: ...45 PCB CIRCUIT BOARD 1 MAIN Analog board PCB...
Page 47: ...2 POWER PCB PCB CIRCUIT BOARD 46...
Page 48: ...47 PCB CIRCUIT BOARD 3 Mpeg Digital board PCB...
