2
Warning: This product includes critical mechanical and electrical parts which are essential for x ray
protection. For continued safety, replace critical components that are indicated in the service
manual with exact replacement parts given in the parts list.
Operating high voltage with this product is 29Kv at minimum brightness. Refer to service manual
for measurement procedures and proper service adjustments.
GENERAL SAFETY INFORMATION
◆
Terms in the manual
CAUTION Statements identify conditions or practices that could result in damage to the equipment or
other property.
WARNING Statements identify conditions or practices that could result in personal injury or loss of
life.
◆
Terms as marked on equipment
CAUTION Statements indicate a personal injury hazard not immediately accessible as one reads the
marking or a hazard which is properly included on the equipment itself.
WARNING Statements are clearly concerning indicated personal injury hazards.
◆
Symbols in the manual
The symbols indicate where applicable cautionary or other information is to be found.
◆
Symbols as marked on equipment
Protective GROUND terminal
◆
High Voltage Warning
And Critical Component Warning Label
The following warning label is on the CRT PWB shield case inside the unit.
Summary of Contents for 712D
Page 1: ...ServiceManual XGA COLOR MONITOR Model 712D DAEWOO ELECTRONICS CO LTD OVERSEAS SERVICE DEPT ...
Page 17: ...15 TROUBLESHOOTING HINTS 1 No Character ...
Page 18: ...16 2 No Raster ...
Page 19: ...17 3 A Missing Color ...
Page 20: ...18 4 Abnormal OSD Font ...
Page 22: ...20 6 Unstable Picture 6 1 Horizontal ...
Page 23: ...21 6 2 Vertical ...
Page 24: ...22 7 Focus ...
Page 25: ...23 7 1 Dynamic Focus ...
Page 26: ...24 8 Convergence ...
Page 28: ...26 9 2 Vertical Size ...
Page 29: ...27 10 High Voltage Output Circuit Test mode 91KHz ...
Page 30: ...28 11 Side Pincushion Circuit ...
Page 31: ...29 12 Power Supply Unit P S U ...
Page 32: ...30 ...
Page 33: ...31 BLOCK DIAGRAM ...
Page 34: ...32 PCB LAYOUT Main PCB Component Side ...
Page 35: ...33 Main PCB Solder Side ...
Page 36: ...34 CRT PCB Component Side ...
Page 37: ...35 CRT PCB Solder Side ...
Page 38: ...36 SCHEMATIC DIAGRAM Deflection Section ...
Page 39: ...37 ...
Page 40: ...38 Video Section ...