Sony MDDISCAM DCM-M1, Руководство по обслуживанию

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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 Minor item name
3-1-1 BF VCO adjustment
3-1-2 5D Flat Position adjustment
3-1-3 80 RGB D-range adjustment
3-1-4 7C BRIGHT adjustment
3-1-5 D5 CONTRAST adjustment
3-1-6 A8 V-COM level adjustment
3-1-7 76 COLOR adjustment
3-1-8 9C V-COM adjustment
3-1-9 B6 Back Light adjustment
3-1-A
R data: 95
White balance adjustment
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
Adjustment value f = 15734
±
30 Hz
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).
3. Horizontal Position Adjustment
Adjust the display position on LCD panel properly.
Item number 3-01-02
Screen display Color bar
Measurement point CH1: Adjusting monitor jig D pin
(PANEL XHD)
CH2: Adjusting monitor jig
C
pin
(HSY)
Measuring instrument Oscilloscope
Adjustment data 5D
initial value
Adjustment value T = 0.65
±
0.1 µsec
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.
Fig.7-1-11
CH1
CH2
CH1
CH2
T
enlargement