IC Ref. No
Pin/Name I/O Signal Name Function Note
IC1806 12 O SCLK 3-Line Serial Clock
13 O SDATA 3-Line Serial Data
14 O DAC_STLOBE DAC Data Effective: Low
15 O S&H_STLOBE S&H Data Effective: High
16 O IRM_STLOBE White Uniformity Data Effective: Low
17 O FAN_CONT2 Digital Pot.Chip Enabnle Data Effective: Low
18 O FAN_CONT1 Fan Voltage Enable Fan Control ON: High
19 O Not used
IC1807 12 O Not used
13 O DVS2 Vsync x 2Hz Output
14 O LAMP_ON Output Clock ON/OFF Output Clock ON: High
15 O LIM-OFF
16 O PWDN For AD9884 Power Down AD Power Down: High
17 O NYSE
18 O CTS33 RS232C Relation
19 O Not used
IC1808 2 I KI1 Main Key Switch
3 I KI2 Main Key Switch
4 I KI3 Main Key Switch
5 I KI4 Main Key Switch
6 I Power_fail Power Fail Detection Abnormal: Low
Normal: High
7 I Not used
8 I Lamp_ERR Lamp Fail Abnormal: Low
Normal: High
9 I Not used
IC1809 2 I S_IN
3 I CB_SW Component
4 I CR_SW Component
5 I CTS/V
6 I OEM Option
7 I OEM Option
8 I OEM Option
9 I SVGA/Video grade SW SVGA: Low Video
Grade: High
Part 4: Troubleshooting
4-10