8
21FL91
Ë
SELF ADJUSTMENT
H-VCO
1. When there is H-VCO self-adjustment key input for adjustment item H-VCO, self-adjustment is performed.
2. H-FREE(1chip) is set to 1.
3. H-OUT is set by intelligent monitor output.
4. IM input is set as TIM input.
5. H-VCO(1chip) data is changed so that the number of input pulse is 125 inside 8ms interval.
6. When adjustment completed, OSD display and H-VCO self-adjustment status data of EEPROM are updated.
7. H-FREE(1chip), intelligent monitor output and IM input mode are recovered.
RF-AGC
1. When there is RF-AGC self-adjustment key input for adjustment item RF-AGC, self-adjustment is performed.
2. AGC-OUT is set by intelligent monitor output.
3. IM input is set as AD input.
4. By decreasing RF-AGC (1chip) data from current RF-AGC adjustment value to 0, AFT input voltage becomes the
maximum setting value.
5. Increase RF-AGC(1chip) data, when AFT input voltage is at (max. 0.3V) point, adjustment is completed.
6. When adjustment completed, OSD display and RF-AGC self-adjustment status data of EEPROM are updated.
7. Intelligent monitor output and IM input mode are recovered.
PIF-VCO
1. When there is PIF-VCO self-adjustment key input for adjustment item PIF-VCO, self-adjustment is performed.
2. VIF-DEF(1chip) is set to 1.
3. AFC is set by intelligent monitor output.
4. IM input is set as AD input.
5. VIF-VCO(1chip) data is changed so that input voltage becomes 2.5V.
6. When adjustment completed, OSD display and PIF-VCO self-adjustment status data of EEPROM are updated.
7. VIF-DEF(1chip), intelligent monitor output and IM input mode are recovered.
MTS-FILTER
Adjustment is performed in the center of the range when FILTER status is OK.
1. If data is changed from 0 to 63, point where NG
→
OK is A and point where OK
→
NG is B.
2. If data is changed from 63 to 0, point where NG
→
OK is C and point where OK
→
NG is D.
3. (A+B+C+D)/4 is the adjustment point.
Summary of Contents for 21FL91
Page 4: ...4 21FL91 LOCATION OF USER S CONTROL ...
Page 25: ...21FL91 25 M E M O ...
Page 26: ...26 21FL91 6 5 4 3 2 1 A B C D E F G H CHASSIS LAYOUT ...
Page 27: ...27 21FL91 6 5 4 3 2 1 A B C D E F G H CRT BLOCK DIAGRAM ...
Page 31: ...33 21FL91 6 5 4 3 2 1 A B C D E F G H SCHEMATIC DIAGRAM CRT Unit ...
Page 36: ...40 21FL91 6 5 4 3 2 1 A B C D E F G H PWB B CRT Unit Wiring Side ...
Page 44: ...Ref No Part No Description Code Ref No Part No Description Code 48 21FL91 PACKING OF THE SET ...
Page 45: ...Ref No Part No Description Code Ref No Part No Description Code 49 21FL91 M E M O ...
