Horizontal Hold Adjustment; Focus Adjustment - Sony DXF-701 Service Manual

3-2-4. Horizontal Hold Adjustment

Note: When this adjustment is carried out, "3-2-2.
Heater Voltage Pre-Adjustment" must be
confirmed.
Object: White Window chart
Equipment: Waveform monitor, Oscilloscope
Trigger: CH2/Oscilloscope
Preparation:
1. Shoot the White Window chart and adjust the lens
zoom so that the picture on the monitor screen becomes
all white.
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).
Test point: CH1 TP4 (G1)/MAIN board
CH2 TP9 (+H DEF)/MAIN board
Adjusting point: 1RV5 (H-HOLD)/MAIN board
Adjustment:
CH-1
A
CH-2
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-
DXF-701 (UC)
DXF-701CE (CE)
B
A=B
RV1
(VO-ADJ)
RV5
(H-HOLD)

3-2-5. Focus Adjustment

Note: "3-2-6. Picture Frame 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. IRIS AUTO/MANU (Lens) → MANU
2. BRIGHT control (Viewfinder)
3. CONTRAST control (Viewfinder)
4. PEAKING control (Viewfinder)
Adjustment:
1. Adjust the lens zoom so that the resolution chart frame
coincides the underscanned picture frame on the
monitor screen.
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).
3. Adjust 1RV3 (FOCUS)/MAIN board so that the
picture on the viewfinder screen is best focused.
TP1 TP3
TP4
TP5
TP6
TP7
R76
MAIN BOARD -SOLDERING SIDE-
→ Mechanical center
→ Fully clockwise 2
→ Fully counterclockwise 3
TP2
TP12
TP11 TP8 TP9
TP10
3-3 (E)