Service manual

17
LC-30HV6U
ADJUSTMENT PROCEDURES
The adjustment values are set to the optimum conditions at the factory before shipping. If a value should become
improper or an adjustment is required due to part replacement, make an adjustment according to the following
procedure.
1. Preparation
Note that the unit should be replaced when the receiver IC (IC2206), CONFIG ROM (IC2202) or microprocessor
(IC2004) is replaced.
Applicable unit: DKEYHC094FE51
2. Adjusting procedure
• VLS BIAS (15V) voltage adjustment
• Entering the adjustment process mode → COM BIAS adjustment → Background adjustment
3. How to enter the adjustment process mode
(1) When the AVC center is not connected
• Turn OFF the monitor main power. Turning ON the monitor main power while pressing the "INPUT" key
and "VOL (–)" key on the top face of the monitor main body together will establish the "Monitor Process"
mode.
(2) When the AVC center is connected
• Turn OFF the monitor main power. Turning ON the monitor main power while pressing the "CH (Ù)" key
and "VOL (+)" key on the top face of the monitor main body together will establish "Monitor Process"
mode.
In each case of (1) and (2), "<K>" is displayed in the upper left portion of the screen.
Then, pressing any key will bring you to the first page of the "Monitor Adjustment" mode.
~ To exit the adjustment process mode, turn OFF the main power.
4. Adjustment process mode key operation table
Key
Cursor UP
Cursor DOWN
Cursor RIGHT
Cursor LEFT
ENTER
INPUT
CH (ù)
CH (Ù)
VOL (+)
VOL (–)
Function 1 (when on the left side of a page)
Moving up by one item or moving to the
previous page (when at the top)
Moving down by one item or moving to the next
page (when at the bottom)
Moving to the right by one item or moving to
another page (in the case of the initial page)
Moving to the left by one item or moving to
another page (in the case of the initial page)
Test pattern off
Moving to the next page
Moving down by one item or moving to the next
page (when at the bottom)
Moving down by one item or moving to the next
page (when at the bottom)
Moving to the right by one item or moving to
another page (in the case of the initial page)
Moving to the left by one item or moving to
another page (in the case of the initial page)
Function 2 (when changing a numeric value)
Incrementing the adjustment value by one or
executing the item (in the case of W or R items)
Decrementing the adjustment value by one or
executing the item (in the case of W or R items)
Moving to the right by one item
Moving to the left by one item
Executing the item (in the case of W or R
items)
Moving to the next page
Incrementing the adjustment value by one or
executing the item (in the case of W or R items)
Decrementing the adjustment value by one or
executing the item (in the case of W or R items)
Moving to the right by one item
Moving to the left by one item