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3-2. VIEWFINDER SYSTEM
ADJUSTMENT
3-2-1. +9.5 V Adjustment
Note:
Perform the adjustment only when measured
voltage is more than
specified voltage.
When this adjustment is carried out, all of
following adjustments must be confirmed.
Equipment:
Digital voltmeter
Test point:
TP1/MAIN board
Adjusting point: 1RV1 (VO-ADJ)/MAIN board
+9.5 ±0.05 Vdc
Specification:
3-2-2. Heater Voltage Pre-Adjustment
Equipment:
Digital voltmeter (AC mode)
TP5 ⇔ TP6/MAIN board
Test point:
0.65 ±0.03 Vrms
Specification:
Adjustment Procedure
If not met the specification, adjust 1RV4(VH-ADJ)/
MAIN board.
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-
3-2 (E)
±
1 % with respect to the
RV1
(VO-ADJ)
RV5
(H-HOLD)
3-2-3. Vertical Hold Adjustment
Note:
Perform adjustment with removing R76
resistor on the MAIN board. After adjustment,
re-mount R76 resistor.
Equipment:
Frequency counter
Preparation:
1RV7 (V-SIZE)/MAIN board → Mechanical center
(If 1RV7 (V-SIZE)/MAIN board is marked, not turn
1RV7 (V SIZE)/MAIN board.)
Test point:
TP 10/MAIN board
Adjusting point: 1RV6 (V-HOLD)/MAIN board
NTSC : 48 ±0.5 Hz
Specification:
: 38 ±0.5 Hz
PAL
Adjustment Procedure
Adjust 1RV6 (V-HOLD)/MAIN board so that the
specification is met while the viewfinder is free-run state
(Viewfinder is not input any video signal.) by pressing the
RET button of Lens.
TP1
TP3
TP4
TP5
TP6
TP7
R76
MAIN BOARD -SOLDERING SIDE-
TP2
TP12
TP8
TP9
TP11
TP10
DXF-701 (UC)
DXF-701CE (CE)
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