Picture Frame Adjustment; Operational Amplifier Output Adjustment - Sony DXF-701 Service Manual

3-2-6. Picture Frame Adjustment

Note: "3-2-5. Focus Adjustment", "3-2-7.

Operational Amplifier Output Adjustment"

and this adjustment affect each other. Repeat
these adjustments until both specifications are
met. Also, confirm "3-2-2.Heater Voltage Pre-
Adjustment".
Object: Resolution chart
Equipment: Waveform monitor
Preparation:
1. BRIGHT control (Viewfinder)
2. CONTRAST control (Viewfinder)
3. PEAKING control (Viewfinder)
4. Remove the eye cap from the viewfinder.
Adjustment:
1. Adjust the lens zoom so that the resolution chart frame
touches the underscanned picture frame on the monitor
screen.
2. Adjust the iris control for the white level at VIDEO
OUT connector on the camera is 100 ±2 IRE (PAL:
700 ±14 mV).
Monitor Screen
3. Adjust 1RV2 (H-SIZE)/MAIN board so that the H size
of resolution chart is underscanned by approximately 2
mm from the CRT picture frame.
4. Adjust 1RV7 (V-SIZE)/MAIN board so that the V size
of resolution chart is underscanned by approximately 2
mm from the CRT picture frame.
Viewfinder Screen
2 mm
3-4 (E)
→ Mechanical center
→ Mechanical center
→ Fully counterclockwise 3
2 mm
Chart Frame
CRT Picture Frame
5. Adjust 1RV8 (V-LIN)/MAIN board so that the
distortion of each circle at the four corners of resolution
chart is minimized.
6. Repeat procedure 2 to 4 until the specification are met.
Note: In case of the adjustment for DXF-701/701CE,
the adjustment is completed the procedure 1
through procedure 6.
7. The following adjustment is only reguired
DXF-701WS/701WSCE.
(1) Set "16:9" on the ADVANCE menu "PAGE 9" in
DXC-D30WS/D30WSP.
(2) Adjust 1RV15 (V-SIZE :WIDE)/MAIN board so
that the circle in the center of resolution chart
becomes a circle.
(3) Set "4:3" on the ADVANCE menu "PAGE 9".
(4) Confirm that the procedure 4 and procedure 5.
If not met, readjust the procedure 4 through
procedure 7.
CN7
CN1
CN6
CN8
CN3 CN2
RV4
(VH-ADJ)
RV2
(H-SIZE)
RV3
(FOCUS)
RV14
(OPAMP-ADJ)
RV15
(V-SIZE : WIDE)
(DXF-701WS/701WSCE only)
RV7 RV8 RV6
(V-SIZE) (V-LINE) (V-HOLD)
CN4 CN5
MAIN BOARD -COMPOMENT SIDE-
RV1
(VO-ADJ)
RV5
(H-HOLD)
DXF-701 (UC)
DXF-701CE (CE)