2. Adjustment Standard
2.1 Input the following signal to the G/Y input terminal of the
BK board to display it on the screen.
For BVM-14EIU/14E5U/14FIU/14F5U/20EIU/20FIU: NTSC signal
For
BVM-14E!F1!4E5E/14F!E/14F5E/20E!E/20FIE: PAL signal
2.2 Connect the RS-232C terminal of the CA-100 with the
OPTION terminal of the monitor using the cable shown in
"Required Tools and Measuring Instruments 5.".
2.3 Set the CA-100 as shown below, and connect the measuring
probe of the CA-100 at the center of the CRT screen.
Display mode: xyY mode
Baud Rate : 9600
3. Select the SYSTEM/COLOR TEMP menu on the
MAINTENANCE menu.
4. Select D93 of COLOR TEMP, cover the CRT screen with a
black cloth, select FACTORY ADJ, and start automatic
adjustments.
5. Select D65 of COLOR TEMP, and select the PROBE/
MINOLTA CA-100 menu. After selecting D65, cover the
CRT screen with a black cloth, and select ST ART to start
automatic operations.
6. Execute this adjustment only for BVM-14E IU/14E5U/
14Fl U/14F5U/20El
unoFIU.
Select AUX of COLOR TEMP, and select the PROBE/
MINOLTA CA-100 menu.
After setting X=0.331, Y=0.346, LOWLIGHT=2.7, and
HlGHLIGHT=lOO, cover the CRT screen with a black cloth,
and select ST ART to start automatic operations.
7. Select the SYSTEM/COLOR TEMP/COPY/OTHER
VALUE menu on the MAINTENANCE menu.
8. Select STD of COLOR TEMP, perform the following
"065", and copy the color temperature data to STD.
9. Select COLOR! of COLOR TEMP, perform the following
"093", and copy the color temperature data to COLOR!.
10. Select COLOR2 of COLOR TEMP, perform the following
step, and copy the color temperature data to COLOR2.
For BVM-14EIU/14E5U/14FIU/14F5U/20EIU/20FIU: Select AUX
For
BVM-14E!E/14E5E/14F!E/14F5E/20E!E/20F!E: Select D65
11. Execute this adjustment only for B VM-14E 1E/14E5E/
14FlE/14F5EnOE1EnOFlE.
Select AUX of COLOR TEMP, perform the following
"D65", and copy the color temperature data
to AUX.
4-12
4-2. SAFETY RELATED ADJUSTMENTS
I +8 (120V) Voltage Adjustment J (BRV101)
Perform the following checks/adjustments when replacing the
following components (marked
~
on the schematic diagram).
~G board ........ RVIOI, RI 15, RI 16, RI 19, Rl20, Rl21, R 122,
IC!Ol, PC!
GA board ..... Rlll, IC102
1. Connect a digital voltmeter to TPI05 of the G board.
(GND : TPI07 of G board)
• Digital voltmeter : More than 4 digits
2. Input the cross hatch signal.
3. Set the BRIGHTNESS YR and CONTRAST YR buttons co
the preset condition. (The LEDs (green) on the buttons go
off.)
4. Rotate RV101 of the G board in the clockwise direction to
maximize the TP105 voltage.
Check that the TP105 voltage is 126.0 V ± 6.0 V.
5. Adjust the TP105 voltage to 120.0 V ± 0.5 V using RV101
of the G board.
High Voltage Regulator Check/Adjustment
(BRV501)
Perform the following checks/adjustments when replacing the
following components (marked • on the schematic diagram).
~PA board .... RV501, IC501, R509, R510, R513, R801,R802,
R804
1. Tum off the power.
2. Connect a static voltmeter to the CRT anode cap.
• Static voltmeter : Whose input impedance calibrated to
above 2
X 10
9
Q.
(Example : Singer's ESH-27X or ESH-23X)
3. Tum on the power.
4. Input the monoscope signal.
5. Set the BRIGHTNESS YR and CONTRAST YR
bu~ons to
the preset condition. (The LEDs (green) on the buttons go
off.)
4. Check that the voltage value is within the following
rm ges.
20-inch model : 27.00 kV± 0.15 kV
14-inch model: 25.00 kV± 0.15 kV
5. If step 4 is not satisfied, replace RV501 of the PA
board,
adjust RV501 so that the specification is satisfied.
6. If replacing RV501 in step 5, after adjusting the
RV,.ecure
RV501 using epoxy resin (DP-190 3M).
To Next Page
Loading...
