Hitachi 51F710 Service Manual page 16

Convergence Errors.
If an error message or code appears while performing MAGIC FOCUS or initialize (ASPECT ,
service mode) follow this confirmation and repair method.
1. Turn on power and receive any signal.
2. Press service switch on DEF./CONV. board.
3. Set R/C to DCAM mode (refer to page 47).
4. Press "DAY/NIGHT" then
5. Error code will be displayed in bottom right corner of screen. If there is no error, an "INITIAL OK" message will
appear on screen.
ERROR!!
6. Follow repair table for errors.
Error
Error
Display
Code
Code
1 VF Error
2 Connect 1
C.C.
*2
3*2 A/D Level Same as Error Code 2
4 Over Flow
5
Convergence
7
Operation
9
Connect 2
10
Noise
11
Sync
*1 -- RK 53, 54, 57, 58, 61, 62, 65, 66, 69, 70, 73 and 74 check these resistors.
*2 Sensor Position
BACK TO ADJUSTMENTS
key on remote control.
Error code
GUIDE
X
DCU REPAIR TABLE
Countermeasure
Replace DCU
1. Darken Outside Light
2. Placing of sensor
3. Is pattern hitting sensor
4. Check connection and solder bridge of sensor
5. Replace sensor
6. Replace sensor P.W.B.
7. Sensor Connector check
8. Replace DCU
9. Adjustment check (H/V size, centering)
1. Check the placement of sensor
2. Adjustment check (H/V size, centering)
3. Conv. amp. gain check *1 (check resistor values only)
Same as Error Code 4
Same as Error Code 4
Same as Error Code 2
Input strong field signal
Check the wiring of connector between sensor and DCU
Input strong field signal
Check the wiring of connetor between sensor and DCU
0
7
6
CONNECT 1!
No. 1 3
1 2
3 (View from front side)
5 4
8 Sensors
16
key in DCU
GUIDE
Error message
Sensor position
C.C.
Application
Magic
Initialize
Focus
X X
X
X X
X X
X X
X
X X
X X
X X
DP45