Convergence Errors - Hitachi C43-FD5000 Service Manual

SERVICE ADJUSTMENTS
Note: If any error message (red) appears, refer to "CONVERGENCE ERRORS".

CONVERGENCE ERRORS

If there is an error while performing INITIALIZE or MAGIC FOCUS, error code or message appears on the
screen as shown on the following table.
When MAGIC FOCUS operates: Error code ('GREEN') appears for about 1 second in bottom right corner, and
then returns to RF or video signal.
When INITIALIZE operates: Error message (RED) appears all the time.
Error
Error Massage
Code
1 VF ERROR !
CONNECT1 !
No.01234567
2
OVER FLOW !
No.01234567 *1
A/D LEVEL !
No.01234567
3
OVER FLOW !
No.01234567 *1
4 OVER FLOW !
Convergence
error(The number of
5 adjustment times is
more than setting.)
6 LOOP COUNT !
7 OPERATION !
8 CHECK SUM !
CONNECT2 !
9
No.01234567 *1
10 NOISE !
11 SYNC !
REMARKS *1) Relation of sensor No. and screen position as shown below:
On screen
(View from front side)
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Contents
EEPROM Write Error
Connection Check Error
(Pattern is not detected)
Calibration Error
(Small difference between
High and Low brightness)
Data over flow Error
(Saturation of corr. Dada)
Convergence Error
(The number of ADJ. Times
is more than setting.)
Not use
Make setup data error
Deferent SRAM-EEPROM
Connect data set error(ADJ.
Parameter PORT80-87 Is
Wrong setting)
Sensor noise error
H BLK, V BLK error
0 1
7
6 5
41
Countermeasure/ Check method
Replace the DCU
Darken outside light
Check the placement of the sensor Is pattern hitting
to sensor?
Check connection and solder bridge of sensor
Replace the sensor
Sensor connector check
Sensor P.W.B. check
Adjustment check (H/V size, centering)
Check the placement of the sensor
Adjustment check
(H/V size, centering)
Convergence AMP circuit check
Same as error code 4
Replace the DCU
Same as error code 2
Input strong field strength signal
Check the wire dressing of connector between
sensor and DCU.
Input strong field strength signal
Input standard signal NTSC or PAL
2
3
sensor No. 0-7
4