Monday, January 14, 2013

HITACHI HDR-081 _ HDR-161 _ TROUBLESHOOTING TIPS





TROUBLESHOOTING


FAULTY SUPPLY/
DO NOT OPEN/
DO NOT INIT


























NO VIDEO/
BAD VIDEO IMAGE








NO AUDIO/
BAD AUDIO& PARASITIC









 DISPLAY ERROR



OSD ERROR




 CRASH&SW LOCKED




 AV Switching ERROR



HARD DISK ERROR
  1. Control the 3,3V,5V,12, supply voltages from the PL451 connector
  2. Control the frequency of the 27MHz X25 crystal.
  3. Control the frequency of the 133Mhz from the S116 point.
  4. Control the IC600 RESET IC 5V supply voltage .After power on the device , RESET IC output must be high in 200ms.  1.2V must be seen on the C600 reset pin.
  5. Control the R187 , R188 , R189, R195 I2C lines.
  6. Control the HDD , remove the HDD power cable and control if there is a Sc or not on the HDD .The resistor value between 5V to GND is nearly 4Kohms.
  7. Control that all cables are connected between the boards.(AVcable, power cable ,HDD data cable)




    • Control the TV scart pins.
    • Control the IC200 supply voltages and SDA&SCL lines.
    • Control the video signals on the PL200& PL304 connectors.


1. Control all audio output from the SCART AUDIO OUTPUTS
2. Control the IC200 supply voltages and SDA&SCL lines.
3. Control the capacitors C226& C227 on the Av board.
4. Control the signal from the point of C143 C144 capacitors on the
main board.
5. Control dc signal on the C143 C144 capacitors on the main board.


1. Control the 3.3V , VFDDATA&DISPCLK signals on the PL 453.
2. Control the transistors Q410 ,Q404 ,Q403 around the PL610 connector.
3. Control the IC2 on the front board.

Control the sections that are written in the first part.

1. There may be a SW error. Load the sw again.
2. Control the X100 crystal
3. Push the standby button for a few seconds.

Control the IC200 supply voltages and SDA&SCL lines


1. Control the HDD 12V & 5V supply voltages from the HDD power connector.
2. Control the HDD , remove the HDD power cable and control if there is a Sc or not on the HDD .The resistor value between 5V to
GND is nearly 4Kohm.Control the HDD data cable.
3. Use FTI and HDD format options on the SW menu to reset HDD.

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