5-8
6. CONTRAST adjustment (PK-46 board)
(See original service manual page 5-21.)
: Deleted point
: Changed point
This adjustment sets correctly the VIDEO signal level that drives
the LCD. If disordered, LCD screen will not be sharp, or will white
blur or black blur.
Mode
Playback
Signal
Alignment disk: Stair-step signal of 10
steps
Measurement point
CN802
9
pin (VG)
External trigger: CN802
7
pin (HSY)
Measuring equipment
Oscilloscope
Adjustment page
F
Adjustment address
35
Specification value
A=2.90 ± 0.07 Vp-p (SHARP)
A=2.54 ± 0.07 Vp-p (CASIO)
Adjustment procedure:
1)
Set data: 01 to page: 0, address: 01.
2)
Set data: 60 to page: 3, address: 18.
3)
Change the data on page: F, address: 35 so that the voltage (A)
between pedestal (0IRE) and 100IRE satisfies the specification
value.
4)
Press the PAUSE button on the adjustment remote commander.
Processing after adjustment finished:
1)
Set data: 00 to page: 0, address: 01.
2)
Confirm that the specification value of the “BRIGHT
adjustment” is satisfied. If not, perform the “BRIGHT
adjustment”.
100 IRE
0 IRE
2H
A
Fig. 5-1-7
+
–
+
–
+
–
Digital voltmeter
Regulated power supply
(6.10
±
0.1 Vdc)
Battery terminal
1-5.
SYSTEM CONTROL ADJUSTMENT
1. Battery down adjustment (FC-69 board)
(See original service manual page 5-23E.)
: Changed point
This adjustment specifies the battery end voltage. If disordered, the
battery service life will be shortened, or images will be deformed at
the battery end.
Mode
Camera record
Signal
Any
Measurement point
LCD screen on the adjustment remote
Measuring equipment commander
Adjustment page
F
Adjustment address
18 to 1C
Switch setting:
1)
IRIS OPEN (BLACK)
Connection:
1)
Connect the regulated power supply and a digital voltmeter as
shown in Fig. 5-1-8.
Fig. 5-1-8
E
