Sony DCM-M1 Service Manual page 146

1. EVF Adjustment Data Initializing
Item number 2-03-01
Screen display Test mode screen
Adjusting method
1) Select the item number "2-03-01".
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 "2-01-ss", and check that the ad-
justment data of each minor item is initial value. (See the fol-
lowing table)
Item No. Initial Data
2-1-1 83
2-1-2 90
2-1-3 B5
2-1-4 B8
R data: 97
2-1-5
B data: 57
Table.7-1-2
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 2-01-01
Screen display Arbitrary
Measurement point Adjusting monitor jig E pin (VCO)
Measuring instrument Oscilloscope (DC range)
Adjustment data 83
initial value
Adjustment value A = 1.80 ± 0.05 V
Adjusting method
1) Select the item number "2-01-01".
2) Check the GND level of oscilloscope.
3) Using e and E keys, change the adjustment data so that the
VCO output voltage (A) satisfies the adjustment value.
4) Press y key to write the adjustment data.
H
A
Fig.7-1-7
Minor item name
VCO adjustment
BRIGHT adjustment
CONTRAST adjustment
Back Light adjustment
White balance adjustment
GND level
(0Vdc)
3. Brightness Adjustment
Set the VIDEO signal level that drives the LCD (of EVF) to proper
value.
If deviated, the EVF screen will be unclear, black blurring, or white
blurring.
Item number
Screen display
Measurement point
Measuring instrument
Adjustment data
initial value
Adjustment value
Adjusting method
1) Select the item number "2-01-02".
2) Using e and E keys, change the adjustment data so that the
voltage (A) between pedestal of inverted waveform and ped-
estal of non-inverted waveform satisfies the adjustment value.
3) Press y key to write the adjustment data.
Pedestal
A
Pedestal
– 6 –
2-01-02
Arbitrary
Adjusting monitor jig B pin (G)
Oscilloscope
90
A = 7.1 ± 0.1 Vp-p
2H
Fig.7-1-8