Electro help: HITACHI HDR-081 _ HDR-161

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

Control the 3,3V,5V,12, supply voltages from the PL451 connector
Control the frequency of the 27MHz X25 crystal.
Control the frequency of the 133Mhz from the S116 point.
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.
Control the R187 , R188 , R189, R195 I2C lines.
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.
Control that all cables are connected between the boards.(AVcable, power cable ,HDD data cable)

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.

Electro help