- 64 -S1S2S2S3S1M56148+B210LOGICVZINPUTINPUTON/OFFCONTROLFORWARD (reverse) DRIVEREVERSE (forward) DRIVEBRAKINGS1=ON , OTHER=OFFS2=ON , OTHER=OFFS3=ON , OTHER=OFFTruth table IC1601/IC1611/IC1621/IC1631Input5 OperationOutput6H L2 10H LL H L HL L L LReverse(forward) driveBrakingForward(reverse) driveMotor drive IC block diagramIC16111026547, 81026547, 81026547, 81026547, 8LENS_UPLENS_DOWNLENS_RLENS_LFOCUS+FOCUS-ZOOM+ZOOM-RIGHT DET.CENTER DET.LEFT DET.K8EK8NMotor-driven lens system. (Zoom, Focus and lens shift.)ASS'Y MAINK16HK16ALENS_LLENS_RLENS-UPLENS-DOWNFOCUS-FOCUS+ZOOM-ZOOM+MOTOR_ENMOTOR_ENMOTOR_ENTOP DET.BOTTOM DET.FOCUS +ZOOM +ZOOM -FOCUS -IC1601CENTER DET.TOP DET.BOTTOM DET.CENTER DET.TOP DET.BOTTOM DET.CENTER DET.16VP_FAILFOCUSMOTOR DRIVEZOOMMOTOR DRIVEASSY MOTOR & AUDIOIC1631MOTOR_ENSHIFT LSHIFT RVerticalshiftLENS_UPLENS_DOWNProjection lens and lens shift systemMOTOR_ENIC801IC1801CPUEXPANDERI/OP_FAILThe waveform edges are center positions.( H to L and L to H )HLHorizontalshiftIC1621IC1611Horizontal shift function does not existin some particular models.Therefore IC1621, K8N, etc. donot exist in those models.91110217189121310116714217189121310116714 K16GAssembly Main1. Check that the Vcc-voltages are correct.2. Check that the POWER FAIL signal is correct.Pin14 of K8E H: Normal3. Check that the LENS SHIFT up and down signals are correct.Pins 6 and 7 of K8E4. Check that the LENS SHIFT left and right signals are correct.Pins 8 and 9 of K8E5. Check that the FOCUS up and down signals are correct.Pins 10 and 11 of K8E6. Check that the ZOOM up and down signals are correct.Pins 12 and 13 of K8E7. Check that the TOP DET. signal is correct.Pin 2 of K8E L : TOP8. Check that the BOTTOM DET. signal is correct.Pin 1 of K8E L : BOTTOM9. Check that the CENTER DET. signal is correct.Pin 17 of K8E Center position=The edge of "H to L" or "L to H."10. Check that the LEFT DET. signal is correct.Pin 9 of K8N L : LEFT11. Check that the RIGHT DET. signal is correct.Pin 10 of K8N L : RIGHT12. Check that the CENTER DET. signal is correct.Pin 11 of K8N Center position=The edge of "H to L" or "L to H."Assembly Motor audio1. Check that the Vcc-voltages are correct.2. Check that the POWER FAIL signal is correct.Pin14 of K16A. H: Normal3. Check that the LENS SHIFT up and down signals are correct.Pins 5 and 6 of IC1631.4. Check that the LENS SHIFT left and right signals are correct.Pins 5 and 6 of IC1621.5. Check that the FOCUS up and down signals are correct.Pins 5 and 6 of IC1611.6. Check that the ZOOM up and down signals are correct.Pins 5 and 6 of IC1601.7. Check that the LENS SHIFT motor drive signals are correct.Pins 10 and 2 of IC1631 and IC1621.8. Check that the FOCUS motor drive signals are correct.Pins 10 and 2 of IC1611.9. Check that the ZOOM motor drive signals are correct.Pins 10 and 2 of IC1601.-Zoom and focus motor drive feature doesnot exist in some particular projection lensLB1641/1645NTroubleshooting● Power Lens System Abnormality
