Clarion NZ501E Service Manual page 68

NO. Defect item
1
Can not power on
Sometimes
2
without touch function
No function all along
Instability
3
can not insert the Disk
can not insert the disk all along
Without video output
4 AUX IN performance
defect
Without audio output
FM/AM performance
5
can not stop the reception
defect
6 Packing line without
function
NZ501E NZ501E NZ501E NZ501E REPAIR
Defect description Reason Analysis and Countermeasure
Check whether the power supply socket(18PIN) is broken or not?
Check whether the voltage of power supply for MCU is 5V or not?
MCU defect
Check the connection of 52PIN flexible wire on the TFT board.
Check the socket on the TFT board (52PIN) whether there is false solder or inveracious
soldering phenomena
Touch panel defect
Check the connection of 4PIN(CON7) flexible wire on the TFT board is well or not.
Check whether MCU work normally or not.
Check whether the connection wire of 52PIN between the mechanism and main board is fixed
well or not.
Check whether the disc port is blocked or not.
DVD Mechanism broken
The Sockets (52PIN/20PIN) Become flexible .
Or there is false solder phenomena
Check whether the close and open disk driver IC2 work normally or not.
MCU is broken.
Check whether the video line is ok or not?
Confirm the socket whether there is false soder or bridging solder phenomena
Check whether the IC related with AUX IN video signal
works well or not.
Check the IC related with AUX IN whether there is the False Solder and Inveracious Soldering
Check whether the power supply voltage of Amplifer is normal or not,also confirm the PINs of
input/output signal whether there is input/output signal .
Check whether the voltage of ASP is normal or not,also confirm the PINs of input/output signal
whether there is input/output signal .
Check the mute circuit is normal or not?
Check whether the work of matcher is normal or not?
Antenna defect
The power supply of Tuner defect or Tuner itself defect.
Check whether the Packing Line is defective or not?
Check whether the detecting circuit of brake is normal or not
Check the MCU is ok or not
REPAIR INSTRUCTION REPAIR REPAIR INSTRUCTION INSTRUCTION INSTRUCTION
Remark