Hitachi C47-WD8000 Service Manual page 72

SERVICE ADJUSTMENTS
2.20.2 CONVERGENCE ERRORS
If there is an error while performing INITIALIZE or MAGIC FOCUS, error code or message appears on the screen as
table below.
When MAGIC FOCUS operates: Error code (GREEN) appears for about 1 second at bottom right corner, and soon it
returns to RF or video signal.
When INITIALIZE operates: Error message (RED) appears all the time.
Error Error
Code Massage
1 VF ERROR !
2 CONNECT1 !
No.01234567
OVER FLOW !
No.01234567
*1
3 A/D LEVEL !
No.01234567
OVER FLOW !
No.01234567
*1
4 OVER FLOW !
5 CONVERGENCE! Convergence Error
6 LOOP COUNT !
7 OPERATION !
8 CHECK SUM !
9 CONNECT2 !
No.01234567
*1
10 NOISE !
11 SYNC !
REMARKS *1) Relation of sensor No. and screen position as shown below.
(View from front side)
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. Data)
(The number of ADJ. Times
is more than setting.)
Not Used
Make Setup Data Error
Different SRAM-EEPROM
Connect Data Set Error
(ADJ. Parameter PORT80-87
is wrong setting)
Sensor Noise Error
H BLK, V BLK Error
0
On screen
7
6
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
Check Sensor connector
Check Sensor PWB
Adjustment check
(H/V size, centering)
Check the placement of the sensor
Adjustment check
(H/V size, centering)
Conv. AMP circuit check
Same as error code 4
Replace the DCU
Same as error code 2
Input strong field strength signal.
Check the wiring dress of connector
between sensor and DCU.
Input strong field strength signal.
Input standard signal NTSC or PAL.
1 2
3
sensor No. 0-7
5 4
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