XG-MB67X
8 – 3
DMD system check
Check P2501 for breakage and
solder crack and peripheral
resistance for solder crack.
Check SC9101 for breakage
and solder crack.
Is there any vertical stripe
(block noise) on the screen?
YES
The main PWB and DMD PWB are in poor
contact. Check the contact surface for dirt
and smear. Check the DMD connector for
breakage. Reassemble the DMD, optical
mechanism, and DMD PWB.
NO
Is the screen all black?
NO
Is approx. 7 V applied to TL9303?
NO
Check IC9301 and peripheral cir-
cuits.
YES
YES
Is approx. 26 V applied to TL9301?
NO
Check IC9301 and peripheral cir-
cuits.
YES
Is approx. -26 V applied to TL9302?
NO
Check IC9301 and peripheral cir-
cuits.
YES
The main PWB and DMD PWB are in poor
contact. Check the contact surface for dirt
and smear. Check the DMD connector for
breakage. Reassemble the DMD, optical
mechanism, and DMD PWB.
Is 3.27 V applied to IC2231
pin(1) and 1.8 V to TL2231?
NO
Check IC2231, IC2201, and their peripheral
circuits.
YES
Is 400 MHz on IC2241 pin(20)? NO
Check IC2241 and peripheral circuits.
1
Summary of Contents for XG-MB67X
Page 10: ...XG MB67X 2 2 Front View ...
Page 11: ...XG MB67X 2 3 ...
Page 12: ...XG MB67X 2 4 ...
Page 13: ...XG MB67X 2 5 Rear View ...
Page 15: ...XG MB67X 3 1 XG MB67X Service Manual CHAPTER 3 DIMENSIONS 1 DIMENSIONS ...
Page 41: ...XG MB67X 9 2 MEMO ...
Page 43: ...XG MB67X 10 2 MAIN UNIT RC UNIT SENSOR UNIT DMD UNIT Color Wheel TH2 TEMP Sensor ...
Page 44: ...XG MB67X 10 3 2 OVERALL WIRING DIAGRAM POWER UNIT ...
Page 45: ...XG MB67X 10 4 ...
Page 47: ...XG MB67X 11 2 ...
Page 50: ...XG MB67X 11 5 MAIN Unit Side B ...
Page 51: ...XG MB67X 11 6 ...
Page 55: ...XG MB67X 11 10 6 5 4 3 2 1 A B C D E F G H DMD Unit Side B ...
Page 56: ...XG MB67X 11 11 3 POWER Unit POWER Unit Side A ...
Page 57: ...XG MB67X 11 12 ...
Page 58: ...XG MB67X 11 13 POWER Unit Side B ...
Page 59: ...XG MB67X 11 14 ...
Page 65: ...XG MB67X 11 20 6 R C Unit 6 5 4 3 2 1 A B C D E F G H R C Unit Side A R C Unit Side B ...
Page 66: ...XG MB67X 12 1 XG MB67X Service Manual CHAPTER 12 WAVEFORMS 1 WAVEFORMS ...
Page 68: ...XG MB67X 13 2 2 SCHEMATIC DIAGRAM MAIN Unit 1 10 ...
Page 69: ...XG MB67X 13 3 ...
Page 70: ...XG MB67X 13 4 MAIN Unit 2 10 ...
Page 71: ...XG MB67X 13 5 ...
Page 72: ...XG MB67X 13 6 MAIN Unit 3 10 ...
Page 73: ...XG MB67X 13 7 ...
Page 74: ...XG MB67X 13 8 MAIN Unit 4 10 ...
Page 75: ...XG MB67X 13 9 ...
Page 76: ...XG MB67X 13 10 MAIN Unit 5 10 ...
Page 77: ...XG MB67X 13 11 ...
Page 78: ...XG MB67X 13 12 MAIN Unit 6 10 ...
Page 79: ...XG MB67X 13 13 ...
Page 80: ...XG MB67X 13 14 MAIN Unit 7 10 ...
Page 81: ...XG MB67X 13 15 ...
Page 82: ...XG MB67X 13 16 MAIN Unit 8 10 ...
Page 83: ...XG MB67X 13 17 ...
Page 84: ...XG MB67X 13 18 MAIN Unit 9 10 ...
Page 85: ...XG MB67X 13 19 ...
Page 86: ...XG MB67X 13 20 MAIN Unit 10 10 ...
Page 87: ...XG MB67X 13 21 ...
Page 88: ...XG MB67X 13 22 8 7 10 9 6 5 4 3 2 1 A B C D E F G H DMD Unit 1 3 ...
Page 89: ...XG MB67X 13 23 17 16 19 18 15 14 13 12 11 ...
Page 90: ...XG MB67X 13 24 8 7 10 9 6 5 4 3 2 1 A B C D E F G H DMD Unit 2 3 ...
Page 91: ...XG MB67X 13 25 17 16 19 18 15 14 13 12 11 ...
Page 92: ...XG MB67X 13 26 8 7 10 9 6 5 4 3 2 1 A B C D E F G H DMD Unit 3 3 ...
Page 93: ...XG MB67X 13 27 17 16 19 18 15 14 13 12 11 ...
Page 94: ...XG MB67X 13 28 BALLAST CONTROL Unit ...
Page 95: ...XG MB67X 13 29 ...
Page 96: ...XG MB67X 13 30 POWER Unit ...
Page 97: ...XG MB67X 13 31 11 13 12 14 15 16 18 19 17 ...
Page 98: ...XG MB67X 13 32 6 5 4 3 2 1 A B C D E F G H PHOTOSENSOR UNIT ...
Page 99: ...XG MB67X 13 33 6 5 4 3 2 1 A B C D E F G H R C UNIT ...
Page 100: ...XG MB67X 13 34 MEMO ...
Page 127: ...XG MB67X ...