ViewSonic E70F Service Manual - Page 9

Focus Adjustment., C. Instrument Test - specs

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4.10 APPLY FULL WHITE PATTERN 4.11 ADJUST OSD ABL TO OBTAIN LIGHT O/P = 30+1FL FOR ALL MODE 4.12 APPLY FULL WHITE PATTERN ADJUST CONTRAST FROM 30FL TO 10FL AND CHECK THE CHROMATICALLY MEET FOLLOWING SPEC. I x (AT CONTRST, 30) -x (AT CONTRST, 25.75) I < 0.007. I y (AT CONTRST, 30) -y (AT CONTRST, 25.75) I < 0.003. I x (AT CONTRST, 10) -x (AT CONTRST, 25.75) I < 0.007. I y (AT CONTRST, 10) -y (AT CONTRST, 25.75) I < 0.006. 4.13 FUNCTION "ALL MODE RESET. PUSH BUTTON "1" AND POWER SWITCH ON, THE PICTURE SHOULD RESTORE TO THAT OF FACTORY MODE. 4.14 USER COLOR MUST BE DEFAULTED AS 9300OK. 5. FOCUS ADJUSTMENT. 5.1 APPLY SIGNAL ALL "ME" PATTERN AT 1024*768 69K MODE. 5.2 SET BRIGHTNESS 50% CONTRAST 100%. 5.3 SET FOCUST CONTROL FOR BEST FOCUS. C. INSTRUMENT TEST 6. TEST PRESETS. 6.1 BRIGHTNESS SET 50%, CONTRST SET 100%. 6.2 INPUT FULL WHITE PATTERN. 6.3 WARM-UP - ALLOW 30 MINUTES WARM-UP PRIOR TO TEST. 7. POWER SUPPLY TEST 7.1 INPUT CHARACTERISTICS 7.1.1 INPUT VOLTAGE RANGE: 90VAC TO 264 VAC, SINGLE PHASE. 7.1.2 INPUT FREQUENCY RANGE: 50HZ TO 60HZ. 7.1.3 MAX. INPUT AC CURRENT: 2A, LOW LINE INPUT, FULL LOAD. 7.1.4 INRUSH CURRENT: LESS THAN 30A FOR ½ CYCLE AT 110V, 50A FOR ½ CYCLE AT 240V, AT COLD STRART. 7.1.5 EFFICIENCY: 70% MIN AT 110V LINE INPUT FULL LOAD. 7.2 OUTPUT CHARACTERISTICS: 7.2.1 STATIC OUTPUT CHARACTERISTICS: MEASUREMENT POINT TP201 TP202 TP203 TP204 TP205 TP206 TP207 TP208 OUTPUT VOLTAGE 105 V + 3% 46.5 V + 5% 13.5 V + 5% 7.5 V + 5% 12 V + 5% 6.3 V + 5% 5.5 V + 5% -13.5 V + 5% 7.3 DIELECTRIC WITHSTAND VOLTAGE: 7.3.1 PRIMARY TO SECONDARY: 2545VDC FOR 1 SEC. 7.3.2 PRIMARY TO SAFETY GROUND: 2545VDC FOR 1 SEC. 7.3.3 LEAKAGE CURRENT: 0.75mA. MAXIMUM AT 110/220VAC ViewSonic Corporation Confidential - Do Not Copy E70f+SB-3 6

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4.10 APPLY FULL WHITE PATTERN
4.11 ADJUST OSD ABL TO OBTAIN LIGHT O/P = 30+1FL FOR ALL MODE
4.12 APPLY FULL WHITE PATTERN ADJUST CONTRAST FROM 30FL TO 10FL AND CHECK THE CHROMATICALLY
MEET FOLLOWING SPEC.
I
x (AT CONTRST, 30) –x (AT CONTRST, 25.75)
I
< 0.007.
I
y (AT CONTRST, 30) –y (AT CONTRST, 25.75)
I
< 0.003.
I
x (AT CONTRST, 10) –x (AT CONTRST, 25.75)
I
< 0.007.
I
y (AT CONTRST, 10) –y (AT CONTRST, 25.75)
I
< 0.006.
4.13
FUNCTION “ALL MODE RESET.
PUSH BUTTON “1” AND POWER SWITCH ON, THE PICTURE SHOULD RESTORE TO THAT OF FACTORY MODE.
4.14 USER COLOR MUST BE DEFAULTED AS 9300OK.
5.
FOCUS ADJUSTMENT.
5.1
APPLY SIGNAL ALL “ME” PATTERN AT 1024*768 69K MODE.
5.2
SET BRIGHTNESS 50% CONTRAST 100%.
5.3
SET FOCUST CONTROL FOR BEST FOCUS.
C. INSTRUMENT TEST
6.
TEST PRESETS.
6.1
BRIGHTNESS SET 50%, CONTRST SET 100%.
6.2 INPUT FULL WHITE PATTERN.
6.3
WARM-UP - ALLOW 30 MINUTES WARM-UP PRIOR TO TEST.
7. POWER SUPPLY TEST
7.1 INPUT CHARACTERISTICS
7.1.1
INPUT VOLTAGE RANGE: 90V
AC
TO 264 V
AC,
SINGLE PHASE.
7.1.2
INPUT FREQUENCY RANGE: 50HZ TO 60HZ.
7.1.3
MAX. INPUT AC CURRENT: 2A, LOW LINE INPUT, FULL LOAD.
7.1.4
INRUSH CURRENT: LESS THAN 30A FOR ½ CYCLE AT 110V, 50A FOR ½ CYCLE AT 240V, AT COLD
STRART.
7.1.5
EFFICIENCY: 70% MIN AT 110V LINE INPUT FULL LOAD.
7.2 OUTPUT CHARACTERISTICS:
7.2.1 STATIC OUTPUT CHARACTERISTICS:
MEASUREMENT
POINT
OUTPUT
VOLTAGE
TP201
105 V +
3%
TP202
46.5 V +
5%
TP203
13.5 V +
5%
TP204
7.5 V +
5%
TP205
12 V +
5%
TP206
6.3 V +
5%
TP207
5.5 V +
5%
TP208
-13.5 V +
5%
7.3 DIELECTRIC WITHSTAND VOLTAGE:
7.3.1
PRIMARY TO SECONDARY: 2545V
DC
FOR 1 SEC.
7.3.2
PRIMARY TO SAFETY GROUND: 2545V
DC
FOR 1 SEC.
7.3.3
LEAKAGE CURRENT: 0.75mA. MAXIMUM AT 110/220V
AC
6
ViewSonic Corporation
Co
nfidential - Do Not Copy
70f+SB-3
E