Hitachi 46W500 Training page 141

DP-3X CONVERGENCE TROUBLE SHOOTING
1. Convergence can not be corrected (How to Trouble Shoot)
Before begining, resolder all connections on the Convergence Output STKs
Red
DCU OUT CHECK
PDS pin 20 (RH)....(*1)
PDS pin 19 (RV)....(*2)
OK
Which has shifted?
VERTICAL line or
HORIZONTAL Line?
HORIZONTAL
Line
VERTICAL
CHECK
RK45 & RK46 (RV)
CHANGE
IK04 (Conv Amp)
RK41 & RK42 (RH)
IK04 (Conv Amp)
CONVERGENCE CAN NOT BE CORRECTED
What Color has shifted?
Green
DCU OUT CHECK
PDS pin 17 (GH)....(*1)
PDS pin 16 (GV)....(*2)
No
Good
Which has shifted?
VERTICAL line or
HORIZONTAL Line?
HORIZONTAL
Line
CHECK
Line
RK61 & RK62 (GV)
CHANGE
IK05 (Conv Amp)
CHECK
CHANGE
For all Resistor Values, see Page 3
IK40 & IK41 p/n CZ01142
PDS pin 14 (BH)....(*1)
PDS pin 13 (BV)....(*2)
No
Good
OK
HORIZONTAL Line?
HORIZONTAL
Line
VERTICAL
CHECK
Line
RK53 & 54 (BV)
CHANGE
IK05 (Conv Amp)
CHECK
RK57 & RK58 (GH)
CHANGE
IK04 (Conv Amp)
STK394-250
A
All Colors
Blue
DCU OUT CHECK
No
Good
OK
Change
DCU
HC2191 p/n CS00731
Which has shifted?
VERTICAL line or
VERTICAL
Line
CHECK
RK49 & RK50 (BH)
CHANGE
IK05 (Conv Amp)
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