3-2. VIEWFINDER SYSTEM3-2-3. Vertical Hold Adjustment
ADJUSTMENT
Note:Perform adjustment with removing R76
3-2-1. +9.5 V Adjustmentresistor on the MAIN board. After adjustment,
re-mount R76 resistor.
Note:Perform the adjustment only when measured
voltage is more than ?1 % with respect to theEquipment: Frequency counter
specified voltage.Preparation:
When this adjustment is carried out, all of1RV7 (V-SIZE)/MAIN board ? Mechanical center
following adjustments must be confirmed.(If 1RV7 (V-SIZE)/MAIN board is marked, not turn
1RV7 (V SIZE)/MAIN board.)
Equipment:Digital voltmeterTest point: TP 10/MAIN board
Test point: TP1/MAIN boardAdjusting point:1RV6 (V-HOLD)/MAIN board
Adjusting point:1RV1 (VO-ADJ)/MAIN boardSpecification:NTSC : 48 ?0.5 Hz
Specification:+9.5 ?0.05 VdcPAL : 38 ?0.5 Hz
3-2-2. Heater Voltage Pre-AdjustmentAdjustment Procedure
Adjust 1RV6 (V-HOLD)/MAIN board so that the
Equipment:Digital voltmeter (AC mode)specification is met while the viewfinder is free-run state
Test point: TP5 U TP6/MAIN board(Viewfinder is not input any video signal.) by pressing the
Specification:0.65 ?0.03 VrmsRET button of Lens.
Adjustment Procedure
If not met the specification, adjust 1RV4(VH-ADJ)/
MAIN board.
TP1TP3
CN7
TP2
CN1TP4
CN6TP5
CN8TP6
TP7
CN3CN2
RV4RV1
(VH-ADJ)(VO-ADJ)
RV2(H-SIZE)
RV3(FOCUS)
RV14(OPAMP-ADJ)
RV15(V-SIZE : WIDE)R76
(DXF-701WS/701WSCE only)
TP12
RV7RV8RV6RV5
(V-SIZE)(V-LINE) (V-HOLD)(H-HOLD)TP11TP8 TP9
CN4 CN5
TP10
MAIN BOARD -COMPOMENT SIDE-MAIN BOARD -SOLDERING SIDE-
DXF-701 (UC)
3-2 (E)
DXF-701CE (CE) |
ACEC
