Sony DCM-M1 Service Manual page 149

1. LCD Adjustment Data Initializing
Item number 3-03-01
Screen display Test mode screen
Adjusting method
1) Select item number "3-03-01".
2) Press y key to execute the adjustment data initializing.
Check that "OK!" is displayed on the test mode screen.
3) Move to the item number "3-01-ss", and check that the ad-
justment data of each minor item is initial value. (See the fol-
lowing table)
Item No. Initial Data
3-1-1 BF
3-1-2 5D
3-1-3 80
3-1-4 7C
3-1-5 D5
3-1-6 A8
3-1-7 76
3-1-8 9C
3-1-9 B6
R data: 95
3-1-A
B data: 70
Table.7-1-4
Note: To switch between R data and B data of "White Balance
Adjustment", press u key. After checking the data, move
to other item with R data kept displayed.
2. VCO Adjustment
Set free running frequency of VCO.
Item number 3-01-01
Screen display Arbitrary
Measurement point Adjusting monitor jig C pin (HSY)
Measuring instrument Frequency counter
Adjustment data BF
initial value
f = 15734 ± 30 Hz
Adjustment value
Adjusting method
1) Select the item number "3-01-01".
2) Connect the adjusting monitor jig B pin (SYF) and E pin
(GND).
3) Using e and E keys, change the adjustment data so that the
VCO frequency (f) satisfies the adjustment value.
4) Press y key to write the adjustment data.
5) Disconnect the adjusting monitor jig B pin (SYF) and E pin
(GND).
Minor item name
VCO adjustment
Flat Position adjustment
RGB D-range adjustment
BRIGHT adjustment
CONTRAST adjustment
V-COM level adjustment
COLOR adjustment
V-COM adjustment
Back Light adjustment
White balance adjustment
3. Horizontal Position Adjustment
Adjust the display position on LCD panel properly.
Item number
Screen display
Measurement point
Measuring instrument
Adjustment data
initial value
Adjustment value
Adjusting method
1) Select the item number "3-01-02".
2) Press the MENU key to display color bar on the LCD screen.
3) Using e and E keys, change the adjustment data so that the
falling time difference (T) between PANEL XHD signal and
HSY signal satisfies the adjustment value.
4) Press y key to write the adjustment data.
5) Press the MENU key to return the LCD screen to the test mode
screen.
CH1
CH2
CH1
CH2
– 9 –
3-01-02
Color bar
CH1: Adjusting monitor jig D pin
(PANEL XHD)
CH2: Adjusting monitor jig C pin
(HSY)
Oscilloscope
5D
T = 0.65 ± 0.1 µsec
enlargement
T
Fig.7-1-11