No.mb496)1 - JVC UX-QD70S Service Manual

4. Error history
(1) Outline
The failure that is not reproduced may occur in a market.
Presumption of the cause of failure is difficult.
This error log is recorded when failure occurs.
It is displayed again and can use to service.
Using the EEPROM of 256bytes.
When an unusual state occurs, it writes the factor in EEPROM.
It leaves the history for 16 times to each item.
The error log displays in TEST code of remote controller,
and enables it to check the contents of each address by the key.
(2) Written to ER R O R
The contents of ERROR are written in the EEPROM address.
No Item
1 SAFETY Number
AD value
2 Timer playback is not starting
3 Timer recording is not starting
4 Recording is not starting
Time out power OFF
5
6 CD
7 DVD
8 MD
9 TAPE
10 Power OFF
(3)The error log check method
Read-out of a error history can be displayed by code of remote control at the time of POWER ON and OFF of a set.
(Press the [3] key ,[STOP
it will become the read-out mode of the error log.)
Press the [3] key ,[STOP
and [power] key on the remote controller.
Press the [SKIP
Press the [GULP SKIP
Press the [3] key ,[STOP
and [power] key on the remote controller.
Normal function display
1-50 (No.MB496)
Writing
times Writing contents
SAFETY number
16
and AD value
16
16 Factor of failure
16 Factor of failure
16 Factor of failure
16 Factor of failure
16 Factor of failure
16 Factor of failure
16 Factor of failure
16 Factor of failure
16 Factor of power OFF
] key and [POWER] key on the remote controller,
] key
FL display
ERR INFO
] key, Increase and decrease the lower address.
] key, Increase and decrease the ten column address.
FL display
Starting address is the 00.
address 00
byte display.
data 01
] key
Writing conditions
When detecting of SAFETY error,
writing SAFETY number and AD value
Timer playback is not starting
Timer recording is not starting
Normal recording is not starting
(except TIMER RECORDING)
Time out of power OFF process
Error with CD
Error with DVD
Error with MD
Error with TAPE
When starting of power OFF process
Example:
Pressing the
Pressing the
Pressing the
Pressing the
Pressing the
Factor of failure
Power circuit failure.
Damage of card wire.
Missing key operation.
User operation
User operation
User operation
Mechanical and module failure
Damage of card wire.
Missing key operation.
Mechanical and pick up failure
Mechanical failure
Mechanical and module failure
Mechanical failure
User operation
Display
Operation
address
key
01 :
key
10 :
key
0F :
key
00 :
key
F0 :
data
05
21
11
01
00