Eiki LC-NB3E service manual Control Port Functions, System Control & I/O Port Table IC801

Page 40

■Control Port Functions

●System Control & I/O Port Table (IC801)

Pin No.

Name

Function Name

Function

I/O

Action

1

PE5/D5

POWER_SW

Power_SW

O

H: On

2

PE6/D6

SYS SW

Peripheral IC power supply SW

O

L: on

3

PE7/D7

LAMP_SW

Lamp LED

O

H: On

4

PD0/D8

DATA0

Data Bus 0

I/O

-

5

PD1/D9

DATA1

Data Bus 1

I/O

-

6

PD2/D10

DATA2

Data Bus 2

I/O

-

7

PD3/D11

DATA3

Data Bus 3

I/O

-

8

PD4/D12

DATA4

Data Bus 4

I/O

-

9

PD5/D13

DATA5

Data Bus 5

I/O

-

10

PD6/D14

DATA6

Data Bus 6

I/O

-

11

PD7/D15

DATA7

Data Bus 7

I/O

-

12

CVCC

CVCC

Power supply

-

-

13

PC0/A0

ADDRESS0

Address Bus 0

O

-

14

VSS

VSS

Vss

-

-

15

PC1/A1

ADDRESS1

Address Bus 1

O

-

16

PC2/A2

ADDRESS2

Address Bus 2

O

-

17

PC3/A3

ADDRESS3

Address Bus 3

O

-

18

PC4/A4

ADDRESS4

Address Bus 4

O

-

19

PC5/A5

ADDRESS5

Address Bus 5

O

-

20

PC6/A6

ADDRESS6

Address Bus 6

O

-

21

PC7/A7

ADDRESS7

Address Bus 7

O

-

22

PB0/A8/TIOCA3

ADDRESS8

Address Bus 8

O

-

23

PB1/A9/TIOCB3

ADDRESS9

Address Bus 9

O

-

24

PB2/A10/TIOCC3

ADDRESS10

Address Bus 10

O

-

25

PB3/A11/TIOCD3

ADDRESS11

Address Bus 11

O

-

26

PB4/A12/TIOCA4

ADDRESS12

Address Bus 12

O

-

27

PB5/A13/TIOCB4

ADDRESS13

Address Bus 13

O

-

28

PB6/A14/TIOCA5

ADDRESS14

Address Bus 14

O

-

29

PB7/A15/TIOCB5

ZOOM +

Zoom +

O

L: Zoom +

30

PA0/A16

ZOOM -

Zoom -

O

L: Zoom -

31

PA1/A17/TxD2

Tx

RS232C TxD

O

L: active

32

PA2/A18/RxD2

Rx

RS232C RxD

I

L: active

33

PA3/A19/SCK2

FOCUS +

Focus +

O

L: Focus +

34

P10/TIOCA0/A20

FOCUS -

Focus -

O

L: Focus -

35

P11/TIOCB0/A21

R/C

Remote control signal input

I

L: active

36

P12/TIOCC0/TCLKA/A22

USB_RESET

USB Reset signal output

O

L: active

37

P13/TIOCD0/TCLKB/A23

USB_BRST

USB_BRST

O

L: On”

38

P14/TIOCA1/IRQ0

SCLK

Serial clock output

O

H: active

39

P15/TIOCB1/TCLKC

BLAST_AC

Lamp Ballast control signal

O

H: on

40

P16/TIOCA2/IRQ1

TXD_SW

TXD_SW

O

H: PW-Main CPU

41

P17/TIOCB2/TCLKD

FAN ON/OFF

Fan Drive output

O

H: on

42

AVSS

Avss

A/D ground

-

-

43

P97/DA1

PIXEL WRITE

PIXEL write

I

L: PW write

44

P96/DA0

TEMP_DET

TEMP DET

I

L: Temperature abnormal

45

P47/AN7

OPT2

Option input

I

L: XGA H: SVGA

46

P46/AN6

 

Not used

I

 

47

P45/AN5

LAMP_ERR

Lamp Error

I

H: Lamp not lit

48

P44/AN4

POWER_FAIL

Power Fail (Abnormal less than 2V)

I

Abnormal less that 1V

49

P43/AN3

OPT1

Destination option

I

 

50

P42/AN2

KEY3

Key Input3 (A/D Input)

I

 

51

P41/AN1

KEY2

Key Input2 (A/D Input)

I

 

52

P40/AN0

KEY1

Key Input1 (A/D Input)

I

 

53

Vref

Vref

Reference voltage for analog

-

-

54

AVCC

AVCC

A/D power supply

-

-

55

MD0

MD0

Operation mode control 0

I

Fixed L

56

MD1

MD1

Operation mode control 1

I

Fixed H

57

OSC2

OSC2

Sub-clock output (Not used)

O

open

58

OSC1

OSC1

Sub-clock output (Not used)

I

Connected to GND

59

RES

RESET

Reset input

I

Reset L to H

60

NMI

NMI

Non-maskable input (not used)

I

Fixed H

61

STBY

STBY

Stand-by

I

-

62

VCC

VCC

Vcc

-

-

63

XTAL

XTAL

Oscillator input

I

-

64

VSS

VSS

GND

-

-

65

EXTAL

EXTAL

Oscillator output

O

-

66

FWE

FEW

Write enable input for Flash ROM

I

H: Enable

-40-

Page 39 Page 41
Image 40
Page 39 Page 41
Contents Model No. LC-NB3E Chassis No. MM8-NB3E00Contents Safety Instructions Safety PrecautionsSpecifications Adjustments after Parts Replacement Optical Adjustments Electrical AdjustmentsCircuit Protections FuseRecommendation Cabinet Top and Control Panel removal Mechanical DisassembliesMain Board removal Front Panel and R/C Board removal AV, AV Sub Board and Speaker removalAV board AV Sub board Filter Board removal Lamp Ballast Unit removalFilter board 1Optical Unit removal Power Box Cover and FansFN901, FN906 removalAB B Power and P.F. Board removal 2Optical Unit removalFan FN905 removal Interlock Switch leverOff from the Cabinet Bottom Fan duct top FN904 FN903 FN902 Optical Parts Disassemblies Integrator Lens-In disassemblyProjection Lens removal Condenser lens disassembly Condenser Lens-Out disassemblyRelay Lens-Out disassembly Polarized Glass-In removalPolarized Glass-Out removal Optical Unit Top removalLocations and Directions Key No. DescriptionLCD Panel/Prism Ass’y Replacement Important Notice on LCD Panel/Prism Assy ReplacementMounting Procedure LCD Panel/Prism Ass’y removalLamp Replacement How to reset Lamp Replace CounterHow to check Lamp Replace Counter Order Replacement LampOptical Adjustments Contrast adjustmentBefore Adjustment Slot BCondenser Lens adjustment Green b Slot B Moving of slot B Slot D Moving of Slot DCondenser Lens-Out adjustment Cyan a Slot B Moving of slot B Moving of slot DWhite a Slot B a Moving of slot B Relay lens-Out adjustmentSlot D Moving of slot D Electrical Adjustments IC1801 is not defectiveOutput Voltage adjustment Fan Voltage adjustmentPedestal adjustment Adjustment ConditionNRS adjustment Signal Center adjustmentBlack Level adjustment Signal Center AdjustmentPC Offset adjustment PC Gain adjustmentOffset Adjustment Gain AdjustmentAV Gain adjustment Gamma Shift adjustmentWhite Balance adjustment Common Center adjustmentService Adjustment Data Table Adjustment Item Initial Value Range Description Initial Value Range Description Group 500 ADC IC301 No Power TroubleshootingAbnormality occurs on the power circuit Power Board Main Board No Picture No picture from Video sourceNo picture from both of Video and Computer sources No picture from all of sourcesVideo Signal processing diagrams AV/PC-RGB-SWLens Motor Problems No SoundControl Port Functions System Control & I/O Port Table IC801MD2 IIC Bus I/O Expander IC2181 Port Functions IIC Bus I/O Expander IC1851 Port FunctionsIIC Bus DA Converter IC1831 Port Functions IIC Bus DA Converter IC1581 Port Functions IIC Bus DA Converter IC2161 Port FunctionsIIC Bus DA Converter IC2571 Port Functions VIDEO-IN WaveformsDrive TP52R/TP201R Drive TP52G/TP201G Drive TP52B/TP201G Sync OUT IC4101-29 Sync OUT IC4101-28 Sync in TP205Sync Drive TP62H Sync Drive TP62V DHS Tpdhs DVS Tpdvs Ballast SW TP28LCleaning Cleaning with air spray Disassembly CleaningIC Block Diagrams BA7078AF Selector, IC6241 CXA2101AQ RGB Matrix, IC4101 IC Block Diagrams IC Block Diagrams ML60851 USB I/F, IC9801 M62393 D/A, IC2571 TB1274AF Video Decoder, IC1101 TA1318N AFC Detector, IC6171 IC Block Diagrams Page Electrical Parts List Read Description in the parts listOUT of Circuit Board Board Assemblied BoardsKEY SW Board 610 299 7293 ASSY,PWB,POWER MM8B Power Board1AA0B10C352DA Fusible RES 22 JH 610 294 1708 ASSY,PWB,LINE Filter MS6A Line Filter BoardAV Board IC LT1399CS FILTER,EMI 100MHZ 610 297 1804 ASSY,PWB,AV SUB MD8A AV SUB Board1AA0B10C3700B 610 297 1828 ASSY,PWB,MAIN ME8B Main Board1AA0B10C371AA IC TB1274AF IC AD8183ARU C2103 C406 C568 Network 0X4 1/16W R152 R2549 R3544 R457 FILTER,LP 7MHZ Temp Board Accessories610 297 1873 ASSY,PWB,TEMP ME8A 1AA0B10C3710B Key No. Part No Description Mechanical Parts List Cabinet Parts Optical Parts Optical Parts List 67 Red Green Blue Red 52-a Optical Parts List MM8-NB3E00 MM8-NB3E00 MM8-NB3E00 Key to better communications Canada
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