29
6. DC/DC POWER and Audio CKT VM-902
6.1
Input:
+12V/5A from AC adapter
6.2
Output:
ITEM
Output Voltage Max Load.
Min Load
Tolerance
Ripple & Noise(max)
VCC +5V 2.1A
0.1A
±
5 %
200mVpp
6.3
Efficiency: 80 % min at Maximum Load.
6.4
Connector Locations
6.4.1
Connector type for VM-902
Location
Type Maker
Number
of
pins
J801
DC-IN
SC
2
J802 4500-12
E&T 12
J803
4500-07 E&T
7 (for LCM999 only)
J2 4500-11
E&T 11
6.4.2
Connector pin Assignment
6.4.3
J801 DC 12V Input
Pin No
Signal
Comment
Pin 1
+12V
From adapter output cable
Pin 2
GND
From adapter output cable
Summary of Contents for AL922
Page 21: ...21 3 3 BLOCK DIAGRAM ...
Page 31: ...31 7 TROUBLESHOOTING 7 1 Main Procedure ...
Page 32: ...32 7 1 1 Power Circuit Troubleshooting ...
Page 33: ...33 7 1 2 Backlights Troubleshooting ...
Page 34: ...34 7 1 3 Performance Troubleshooting ...
Page 35: ...35 7 1 4 Function Troubleshooting ...
Page 38: ...38 Back Cover Cable Cover Gap 0 8 mm B 1 2 mm Base Cover Neck Cover Gap 0 8 mm C 1 2 mm ...
Page 42: ...42 WAVESHAPE ...
Page 48: ...48 APPENDIX A PARTS LISTS ...
Page 50: ...50 A 4 461A7830011 Firmware Ctrl Board VL 901 ...
Page 53: ...53 APPENDIX B DISPLAY UNIT ASSEMBLY ...