Zenith Z44SZ80 Series Service Manual page 15

10-3. Offset/ Gain Adjustment
(1) Press ADJ key on the Remote Control to enter the
adjustment mode after more than 10 seconds of receiving
the signal.
(2) Adjustment is automatic by pressing the VOLUME+ (
key in AD9883A-SET item of the adjustment menu.
"Gain/Offset Adjust" will apeear on the OSD for a short
time during adjustment.
(3) After adjustment, "End of AD9883 Adjust" appears and
press the ADJ key to exit.
11. Adjusting the Actuator
(Initial Data: ACT Phase=0, ACT Gain=110)
11-1. Required Test Equipment
Service Remote Control
11-2. Preparation for Adjustment
(1) Connect a power source to the TV Set and turn TV set on.
(2) Using the Service Remote Control, enter from ADJ to
Actuator.
(3) ACT Gain and Phase is variable and the Tartan plaid of
the R, G, B, W Horizontal Line.
- Adjust the mutation quantity of the Actuator.
(Phase =0 Fix.)
* The Tartan plaid of the R, G, and B adjust is not visible.
But, when the R, G and B will not ballance, adjust the R and
G to acheve ballance.
Before Actuator Adjustment
<Fig. 14> Test Pattern
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ADJUSTMENT INSTRUCTIONS
G
)
After Actuator Adjustment
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12. CWI/NDC Adjustment
(Base value --> CWI: 165, NDC: 10)
12-1. Required Test Equipment
Service Remote control for Adjustment
12-2. Preparation for Adjustment
(1) Connect power and turn the TV set on.
(2) Using the Remote Control, enter by pressing ADJUST on
the Service Remote to CWI/NDC.
<Fig. 15> TEST Pattern(Lamp Gray Pattern)
12-3. Adjustment
(1) Using the Channel key, adjust CWI-Pat.1 to the left/right.
(2) During adjustment, check the appearance of noise in the
TEST Pattern.
Set the value to reduce green noise in step 3~4.
(3) Using CH UP/DOWN key of the Remote Control, enter the
RED PATTERN.
(4) Check the RED Pattern to verify it is uniform.
<Fig. 16> TEST Pattern(RED Pattern)
Starting point of noise
(appearance GREEN)