Eiki LC-NB3E service manual MD2

Page 41

Control Port Functions

Pin No.

Name

Function Name

Function

I/O

Action

67

MD2

MD2

Operation mode control 2

I

Fixed H

68

PF7/¢

¢

¢ output

O

-

69

PF6/AS

AS

AS output

O

-

70

PF5/RD

RD

Read signal

O

Control for SRAM

71

PF4/HWR

HWR

Write signal (upper 8 bit)

O

Control for SRAM

72

PF3/LWR/ADTRG/IRQ3

IRO_CS

Color uniformity correction (E7050) Chip Select

O

L: active

73

PF2/WAIT

TURBO_CS

Turbo gate array Chip Select

O

H: active

74

PF1/BACK/BUZZ

SDA 4

IIC Bus 4 SDA

I/O

L: active

75

PF0/BREQ/IRQ2

FLASH_MODE

FWE control

O

 

76

P30/TxD0

PW TX

PW365 TxD

O

L: active

77

P31/RxD0

PW RX

PW365 RxD

I

L: active

78

P32/SCK0/SDA1/IRQ4

SDA 2

IIC Bus 2 SDA

I/O

L: active

79

P33/TxD1/SCL1

SCL 2

IIC Bus 2 SCL

O

L: active

80

P34/RxD1/SDA0

SDA 1

IIC Bus 1 SDA (EEPROM,DAC-1)

I/O

L: active

81

P35/SCK1/SCL0/IRQ5

SCL 1

IIC Bus 1 SCL (EEPROM,DAC-1)

O

L: active

82

P36

BLAST_SW

Lamp ballast 400VON/OFF

O

H: on

83

P77/TXD3

MCI TX

Viewer TxD

O

L: active

84

P76/RXD3

MCI RX

Viewer RxD

I

L: active

85

P75/TMO3/SCK3

SCL 4

IIC Bus 4 SCL

O

L: active

86

P74/TMO2/MRES

M-RESET

Manual reset

I

L: reset

87

P73/TMO1/CS7

PW_IN0

PW365 data input 0

I

 

88

P72/TMO0/CS6

PW_IN1

PW365 data input 1

I

 

89

P71/TMRI23/TMCI23/CS5

OPT_ECO

Eco Mode Option

I

 

90

P70/TMRI01/TMCI01/CS4

OPT_DVI

DVI Option

I

 

91

PG0/IRQ6

SDATA

Serial data output

O

L: active

92

PG1/CS3/IRQ7

USB_INTR

USB interrupt signal input

I

L active

93

PG2/CS2

CS 2

SRAM Chip Select

O

L: active

94

PG3/CS1

CS 1

USB Chip Select

O

L: active

95

PG4/CS0

CS 0

Not used

O

Fixed L

96

PE0/D0

SDA 3

IIC Bus 3 SDA

I/O

L: active

97

PE1/D1

SCL 3

IIC Bus 3 SCL

O

L: active

98

PE2/D2

PW_OUT0

PW365 Data output 0

O

 

99

PE3/D3

PW_OUT1

PW365 Data output 1

O

 

100

PE4/D4

PW_RESET

PW365 Reset output

O

Reset L -> H -> L

-41-

Image 41
Contents Chassis No. MM8-NB3E00 Model No. LC-NB3EContents Safety Precautions Safety InstructionsSpecifications Optical Adjustments Electrical Adjustments Adjustments after Parts ReplacementFuse Circuit ProtectionsRecommendation Main Board removal Mechanical DisassembliesCabinet Top and Control Panel removal AV board AV Sub board AV, AV Sub Board and Speaker removalFront Panel and R/C Board removal Filter board Lamp Ballast Unit removalFilter Board removal AB B Power Box Cover and FansFN901, FN906 removal1Optical Unit removal 2Optical Unit removal Power and P.F. Board removalOff from the Cabinet Bottom Fan duct top FN904 FN903 FN902 Interlock Switch leverFan FN905 removal Projection Lens removal Integrator Lens-In disassemblyOptical Parts Disassemblies Condenser Lens-Out disassembly Condenser lens disassemblyPolarized Glass-In removal Relay Lens-Out disassemblyOptical Unit Top removal Polarized Glass-Out removalKey No. Description Locations and DirectionsImportant Notice on LCD Panel/Prism Assy Replacement LCD Panel/Prism Ass’y ReplacementMounting Procedure LCD Panel/Prism Ass’y removalHow to reset Lamp Replace Counter Lamp ReplacementHow to check Lamp Replace Counter Order Replacement LampContrast adjustment Optical AdjustmentsBefore Adjustment Slot BGreen b Slot B Moving of slot B Slot D Moving of Slot D Condenser Lens adjustmentCyan a Slot B Moving of slot B Moving of slot D Condenser Lens-Out adjustmentSlot D Moving of slot D Relay lens-Out adjustmentWhite a Slot B a Moving of slot B IC1801 is not defective Electrical AdjustmentsFan Voltage adjustment Output Voltage adjustmentPedestal adjustment Adjustment ConditionSignal Center adjustment NRS adjustmentBlack Level adjustment Signal Center AdjustmentPC Gain adjustment PC Offset adjustmentOffset Adjustment Gain AdjustmentGamma Shift adjustment AV Gain adjustmentWhite Balance adjustment Common Center adjustmentService Adjustment Data Table Adjustment Item Initial Value Range Description Initial Value Range Description Group 500 ADC IC301 Abnormality occurs on the power circuit TroubleshootingNo Power Power Board Main Board No picture from Video source No PictureNo picture from both of Video and Computer sources No picture from all of sourcesAV/PC-RGB-SW Video Signal processing diagramsNo Sound Lens Motor ProblemsSystem Control & I/O Port Table IC801 Control Port FunctionsMD2 IIC Bus DA Converter IC1831 Port Functions IIC Bus I/O Expander IC1851 Port FunctionsIIC Bus I/O Expander IC2181 Port Functions IIC Bus DA Converter IC2571 Port Functions IIC Bus DA Converter IC2161 Port FunctionsIIC Bus DA Converter IC1581 Port Functions Drive TP52R/TP201R Drive TP52G/TP201G Drive TP52B/TP201G WaveformsVIDEO-IN Sync in TP205 Sync OUT IC4101-29 Sync OUT IC4101-28Sync Drive TP62H Sync Drive TP62V DHS Tpdhs DVS Tpdvs Ballast SW TP28LCleaning with air spray Disassembly Cleaning 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 Read Description in the parts list Electrical Parts ListOUT of Circuit Board KEY SW Board Assemblied BoardsBoard 1AA0B10C352DA Power Board610 299 7293 ASSY,PWB,POWER MM8B Fusible RES 22 JH AV Board Line Filter Board610 294 1708 ASSY,PWB,LINE Filter MS6A IC LT1399CS FILTER,EMI 100MHZ 1AA0B10C3700B AV SUB Board610 297 1804 ASSY,PWB,AV SUB MD8A 1AA0B10C371AA Main Board610 297 1828 ASSY,PWB,MAIN ME8B IC TB1274AF IC AD8183ARU C2103 C406 C568 Network 0X4 1/16W R152 R2549 R3544 R457 FILTER,LP 7MHZ 610 297 1873 ASSY,PWB,TEMP ME8A 1AA0B10C3710B AccessoriesTemp Board 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