30
6.4.3.1
J802 FOR I/F CKT
Pin No
Signal
Comment
Pin 1,2,3,4
+12V
From a12V power
Pin
5,6,10,11,12
GND
GND
Pin 8
+5V
Supply for I/F CKT
Pin 7
ON/OFF
ON/OFF Control ON>3.0V OFF <2.0V
Pin 9
BRIGHT
Lamp Current Control (0V to 3.3V) ,
3.3V for max brightness
6.4.3.2
J803 FOR M/B CKT
Pin No
Signal
Comment
Pin 1,2
+5V
For M/B +5V power
Pin 3,4,5
GND
GND
Pin 6
BLON
Bright Light On/ Off
Pin 7
BRIGHT
Brightness Adjustment
6.4.3.3
J3 FOR Audio input(for AM999 only)
Pin No
Signal
Comment
Pin 1
GND
GND
Pin 2
Audio IN (1)
From Audio output (1)
Pin 3
Audio IN (2)
From Audio output (2)
6.4.3.4
J2 TO Speaker CKT(for AM999 only)
Pin No
Signal
Comment
Pin 1
VOL
Volume ON/OFF control
Pin 2
GND
GND
Pin 3
LIN1
Audio volume adjust line INL
Pin 4
RIN1
Audio volume adjust line INR
Pin 5
RIN2
Audio volume adjust line OUTR
Pin 6
LIN2
Audio volume adjust line OUTL
Pin 11
GND
Pin 7
R-EAR
EAR phone out R
Pin 8
L-EAR
EAR phone out L
Pin 9
ROUT
Speaker out R
Pin 10
LOUT
Speaker out L
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 ...