Eiki LC-NB3E - Manuals - manualsarea.com

Page 2 - Contents

2 ■ Contents ■ Safety instructions ________________________________________________3 ■ Specifications __________________________________________________ 4 ■ Note on Servicing ______________________________________________ 5 ■ Adjustments after parts replacement ________________________________ 5 ■ C...

Page 3 - Safety Instructions; SAFETY PRECAUTIONS; DO NOT ATTEMPT TO SERVICING THE; CAUTION

3 ■ Safety Instructions WARNING:The chassis of this projector is isolated (COLD) from AC line by using the converter transformer. Primary side ofthe converter and lamp power supply unit circuit is connected to the AC line and it is hot, which hot circuit is iden-tified with the line ( ) in the schem...

Page 4 - Specifications

Projector Type Multi-media Projector Dimensions (W x H x D) 13.11” x 3.52” x 9.25” (333mm x 89.5mm x 235mm) Net Weight 8.6 lbs (3.9 kg) LCD Panel System 0.9” TFT Active Matrix type, 3 panels Panel Resolution 800 x 600 dots Number of Pixels 1,440,000 (800 x 600 x 3 panels) Color System 6 color system...

Page 5 - Disassembly / Replaced Parts; Optical Adjustments; Adjustments after Parts Replacement

5 Condenser lens adjustment ❍ ● Condenser lens-out adjustment ❍ ● Relay lens-out adjustment ❍ ● Contrast Adjustment R-Contrast adjustment ● G-Contrast adjustment ● B-Contrast adjustment ● Output voltage adjustment ● Fan voltage adjustment ● Pedestal adjustment ● NRS adjustment ● Signal center adjust...

Page 6 - Circuit Protections; Fuse

-6- ● Interlock switch The interlock switch (SW904) cuts off the AC mains power supplywhen the lamp cover is removed. After opening the lamp cover forreplacing the lamp ass’y, place the lamp cover correctly otherwisethe projector can not turn on. ● Thermal switch There is the thermal switch (SW902) ...

Page 7 - Warning temperature and power failure protection; Possible causes

-7- Circuit Protections ● Warning temperature and power failure protection The TEMP WARNING indicator flashes red and the projector will automatically turn off when the internal tempera-ture of the projector exceeds the normal temperature or when stopping cooling fans or when the internal powersuppl...

Page 8 - Mechanical Disassemblies; Cabinet Top and Control Panel removal

-8- 1 Remove 4 screws A to take the Cabinet Top Ass’y upward off. 2 Remove the Control Panel off from the Cabinet Top by lifting the edge ofcontrol panel. ■ Mechanical Disassemblies Mechanical disassemble should be made following procedures in numerical order.Following steps show the basic procedure...

Page 9 - AV, AV Sub Board and Speaker removal

-9- Mechanical Disassemblies 1 Remove 1 screw A to release a grounding wire. 2 Pull the Rear Panel ass’y upward. 3 Remove 4 screws B and take AV Board off. 4 Remove 4 screws C and take AV Sub Board off. 5 Remove 4 screws D and take Speaker off. Fig.3 Fig.4 1 Remove 4 screws A and unhook 2 hooks B at...

Page 10 - Lamp Ballast Unit removal

-10- Mechanical Disassemblies 1 Remove 1 screw A and disconnect the Lamp Socket. 2 Remove 2 screws B to take the Lamp Ballast ass’y upward off. 3 Remove 4 screws C to take the Lamp Ballast Board off. Fig.5 1 Remove 3 screws A and pull the Filter Board ass’y upward. 2 Remove 1 screw B to take the gro...

Page 11 - Optical Unit removal

-11- 1 Remove 4 screws A to take the Fan(FN901) off. 2 Remove 4 screws B to take the Fan(FN905) off. 3 Remove 3 screws C to take the Power Box Cover upward off. Mechanical Disassemblies 1 Remove 1 screw A to take the Lamp Cover off. 2 Loosen 3 screws B to take the Lamp assembly by pulling the handle...

Page 14 - Optical Parts Disassemblies; Projection Lens removal

-14- 1 Remove the Front Panel following to “Front Panel Removal” on “MechanicalDisassemblies”. 2 Remove 4 screws to take the Projection Lens ass’y off. 1 Remove 2 screws A and pull the Integrator Lens-In ass’y upward. 2 Remove 1 stoppers B and then take the Lens off from the holder. Fig.1 ■ Optical ...

Page 15 - Optical Pats Disassemblies; Condenser lens disassembly

-15- 1 Remove 2 screws A and pull the Condenser Lens ass’y upward. 2 Remove 4 screws B to take the Lens off from the holder. 1 Remove 2 screws A and pull the Condenser Lens-Out ass’y upward. 2 Remove 2 screws B to take the Lens off from the holder. Note:Lens should be placed as shown in the figure b...

Page 16 - Relay Lens-Out disassembly

-16- Optical Parts Disassemblies 1 Remove 2 screws A and pull the Relay Lens-Out ass’y upward. 2 Remove 2 screws B to take the Lens off from the holder. Note:There is no mounting direction of the lens. 1 Remove each screw and pull the Polarized Glass-In ass’y upward. 2 Unhook the stoppers and take t...

Page 17 - Polarized Glass-Out removal

-17- 1 Remove 4 screws A and take the LCD/Prism ass’y off upward from the optical unit. 2 Remove each screw B and take the glass off upward. PolarizedGlass-Out LCD Panel/PrismAss’y LCD Panel/Prism Ass’y Fig.7- 2 * Glass should be placed as the film attached side comes to the LCDpanel side. LCD Panel...

Page 18 - Locations and Directions; Description

-18- Optical Parts Disassemblies When mounting or assembling the optical parts in the optical unit, theparts must be mounted in the specified location and direction asshown in figure below. 5 8 9 Fig.9 2 4 1 The printed markercomes this side. 13 3 7 10 Locations and Directions 6 12 1 Mirror (W) 2 In...

Page 19 - LCD Panel/Prism Ass’y Replacement; Top View; LCD Panel/Prism Ass’y removal

-19- ■ LCD Panel/Prism Ass’y Replacement 1 Remove the cabinet top and main board following to“Mechanical Disassemblies”. 2 Remove 4 screws by using the 2.0 mm hex driver andtake the LCD Panel/Prism ass’y off upward from theoptical unit. LCD Panel/PrismAss’y After replacing or installing the LCD Pane...

Page 20 - Lamp Replacement; Recommendation; Lamp replace counter data; How to reset Lamp Replace Counter

-20- WARNING: - For continued safety, replace with a lamp assembly of the same type.- Allow the projector to cool for at least 45 minutes before you open the lamp cover. The inside of the projector can become very hot. - Do not drop the lamp module or touch the glass bulb! The glass can shatter and ...

Page 21 - Slot B; Main Board; Contrast adjustment

-21- [Before Adjustment]- Input a 100% of black raster signal. [R/G/B-CONTRAST ADJUSTMENT]1 Loosen a screw A (Fig.1-1/1-2) on the polarized glass mounting base which you intend to adjust. 2 Turn the polarized glass mounting base as shown in Fig.1-1 toobtain the darkest brightness on the screen. 3 Ti...

Page 22 - A and C; Condenser Lens adjustment

-22- Optical Adjustments Fig.2- 2 1 Turn the projector on by a state of without FPC cables. 2 Project only green light on the screen. 3 Adjust the adjustment base of condenser lens assy to make color uniformity in green. 1) If the shading appears on the left or right of the screen as shown in Fig.2-...

Page 23 - Moving of slot B; Condenser Lens-Out adjustment; Cyan

-23- 1 Turn the projector on by a state of without FPC cables. 2 Project green and blue lights on the screen. 3 Adjust the adjustment base of condenser lens-out assy to makecolor uniformity in cyan. 1) If the shading appears on the left or right of the screen as shown in Fig.3-1, loosen 1 screw A wi...

Page 24 - Relay lens-Out adjustment

-24- 1 Turn the projector on by a state of without FPC cables. 2 Project all of lights on the screen. 3 Adjust the adjustment base of relay lens assy to make color unifor- mity in white. 1) If the shading appears on the left or right of the screen as shown in Fig.4-1, loosen 1 screw A with the 2.0mm...

Page 25 - Electrical Adjustments; To enter the service mode; Service Adjustment Menu Operation; Caution to memory IC replacement; Memory IC Replacement; Service Mode

-25- ■ Electrical Adjustments To enter the service mode To enter the “Service Mode”, press and hold the MENU and IMAGE button on the projector at the same time formore than 3 seconds. The service menu appears on the screen as follows. To adjust service data Select the adjustment group no. by pressin...

Page 26 - Circuit Adjustments; Output Voltage adjustment; Pedestal adjustment

-26- After replacing the Power Board, PF.C. Board, readjustthe Output voltage adjustment as follows. 1. Connect a digital voltmeter to pins 1 (+) and 3 (-) of K6D . 2. Adjust the voltage by using VR611 as following. AC Input Reading 230V 370V ±2V or 120V 340V ±2V Caution:Be sure to connect the lamp ...

Page 27 - Signal Center adjustment; Black Level adjustment

-27- Electrical Adjustments 1. Receive the 16-step grey scale computer signal.2. Set to COMPUTER mode.3. Enter the service mode. [R-SIGNAL CENTER ADJUSTMENT]4. Connect a digital voltmeter to test point “ TP25R1 ” (+) and chassis ground (-). 5. Select group no. “ 3 ”, item no. “ 0 ” and change data v...

Page 28 - PC Gain adjustment; PC Offset adjustment

-28- Electrical Adjustments 1. Receive the 16-step gray scale computer signal.2. Set to COMPUTER mode.3. Enter the service mode. [R-GAIN ADJUSTMENT]4. Connect an oscilloscope to test point “ TP25R1 ” (+) and chassis ground (-). 5. Select group no. “ 2 ”, item no. “ 3 ” and change data value to adjus...

Page 29 - Gamma Shift adjustment; AV Gain adjustment

-29- Electrical Adjustments [PC-GAMMA OFF ADJUSTMENT] 1. Receive the 16-step gray scale computer signal.2. Set to COMPUTER mode.3. Enter the service mode, select group no. “ 2 ”, item no. “ 6 ” and change data value to reproduce the prop- er gray scale picture on the screen. [AV-GAMMA OFF ADJUSTMENT...

Page 30 - Service Adjustment Data Table

Group: 0 TB1274 0 TINT 32 0 ~ 63 1 SHP_EQ 2 0 ~ 3 2 SHP_FO 1 0 ~ 3 NTSC,PAL SECAM,NT4.43 S-Video Y,Cb,Cr 3 SHP_GAIN 8 8 9 9 0 ~ 15 NTSC NT4.43 PAL SECAM 4 Y_OUT_LEVEL 30 30 31 31 0 ~ 63 S-Video NTSC S-Video PAL S-Video SECAM Y,Cb,Cr 30 31 31 31 NTSC NT4.43 PAL SECAM 5 C_OUT_LEVEL 32 32 32 32 0 ~ 63 ...

Page 34 - MAIN BOARD; Test Points and Locations

K25R K8P K25G K25B IC4101 IC301 IC401 IC801 TP12V2 TP12V1 TP3581 TP25R1 TP25R2 TP3551 TP11SC TP11SY TP25G2 TP11CV TP11PB TP11PR TP25G1 TP62V TP62H TP52R TP52B TP52G TP201G TP201B TP201R TP205 TP25B1 TP25B2 TPDCLK TPDHS TPDVS -34- Electrical Adjustments ● MAIN BOARD Test Points and Locations

Page 35 - Troubleshooting; No Power; Stop the operation of power supply circuit due

-35- ■ Troubleshooting No Power The possible causes of No Power are listed below. Pleasecheck following and refer to power supply and protection cir-cuits diagram in the figure opposite. 1. Stop the operation of power supply circuit due to detection of abnormality. - Detected the abnormality on the ...

Page 36 - Power supply drive and protection diagrams and locations

SW904 Interlock sw. SW902 Thermal sw. F601 Fuse 1 1 3 1 4 7 1 1 2 1 2 4 7 3 3 5 5 3 1 3 1 3 1 2 Power Oscillator Circuit 15.5V 15.5V 6V -6V FN901 FN902 FN903 FN904 FN905FN906 BALAST_AC1 LAMP_SW1 LAMP_BST_SW1 LAMP_BST_SW1 P-FAIL P-FAIL 5V_SW 5V_SW FAN DRIVE1 FAN DRIVE1 Fan Control IC681 IC671 IC801 S...

Page 37 - No Picture

-37- The possible causes of No Picture are listed below. Pleasecheck following and refer to video signal processing dia-grams in the figure opposite. 1. No picture from Video source Composite Video InputCheck composite video signal at pins 45 and 46 of K10Uon AV Board and K3U on Main Board.Check Y, ...

Page 38 - Video Signal processing diagrams

-38- Troubleshooting DGB0-9 3 1 5 22 8 16 18 20 IC5241 A V/PC-RGB-SW AV /P C PC : H AV : L IC5271 IC5281 IC5291 2 13 12 1 10 11 14 15 ANALOG RGB H-SYNC V- SYNC IC5211 RGB-AMP . IC6211 IC6221 IC6241 SYNC DET . 1 5 12 8 IC6251 INVER TER IC6101 INVER TER 2 3 5 11 13 2 5 7 15 12 10 IC5251 A V/PC SYNC-SW...

Page 39 - Lens Motor Problems; No Sound; Incorrect operation of VIDEO/COMPUTER mode

-39- 1. No drive signals supplied at motors Check drive signals at pins 1 to 4 of K6U on Power Board.Check ICs IC5501, IC5551 and peripheral circuits. Checkmotor drive power supply (9VMCI). 2. No drive signals supplied at motor drive ICs. Check drive signals at pins 3-4 (ZOOM), 5-6 (FOCUS) ofk6S. Ch...

Page 40 - Control Port Functions

-40- ● System Control & I/O Port Table (IC801) ■ Control Port Functions 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 PD...

Page 42 - IIC Bus DA Converter (IC1831) Port Functions

-42- 1 S Reset Open - 2 SCL IIC SCL Active “L” - 3 SDA IIC SDA Active “L” - 4 D0 CARD_IN L: CARD H: No CARD IN 5 D1 VIEWER_ON L: VIEWER Unit exist IN 6 D2 SCDT1 DVI Sync. detection H: DVI IN 7 D3 TURBO_LED H: on L: off OUT 8 VSS GND - - 9 D4 WARNING_LED H: on L: off OUT 10 D5 LAMPREP_LED H: on L: of...

Page 43 - IIC Bus DA Converter (IC2161) Port Functions; IIC Bus DA Converter (IC1581) Port Functions

-43- 1 R Reset Fixed “H” 2 SCL IIC SCL Active “L” 3 SDA IIC SDA Active “L” 4 AO7 RCLP R Signal clamp reference voltage 5 AO8 GCLP G Signal clamp reference voltage 6 AO9 BCLP B Signal clamp reference voltage 7 AO10 AV/PC AV/PC switch (L: AV H: PC) 8 AO11 SYNC_SW Fixed “H” 9 AO12 G_BLK_DC Video G sign...

Page 44 - Waveforms

-44- ■ Waveforms VIDEO-IN Y-IN <IC1101-5> C-IN <IC1101-7> Y-OUT <IC1101-21> CB-OUT <IC1101-22> CR-OUT <IC1101-23> H-SYNC OUT <IC1101-9> V-SYNC OUT <IC1101-4> R-OUT <IC4101-35> G-OUT <IC4101-37> B-OUT <IC1101-7> R-DRIVE <TP52R/TP201R> ...

Page 46 - Cleaning; Cleaning with air spray

-46- ■ Cleaning Cleaning with air spray 1. Remove the cabinet top following to “Mechanical Disassemblies”. 2. Clean up the LCD panel and polarizing plate by using the air spray from the cabinet top opening. Caution:Use a commercial (inert gas) air spray designed forcleaning camera and computer equip...

Page 47 - IC Block Diagrams

-47- ■ IC Block Diagrams ● AD8183ARU <Selector, IC5241> ● BA6287F <Motor Drive IC5501, IC5551>

Page 55 - Electrical Parts List; CAPACITOR; RESISTOR

MM8-NB3E00 -55- ■ Electrical Parts List Product safety should be considered when a component replacement is made in any area of a projector. Components indicated by a mark in this parts list and the circuit diagram show components whose value have special significance to product safety. It is partic...

Page 57 - KEY SW BOARD

MM8-NB3E00 -57- Electrical Parts List 610 292 5609 ASSY,PWB,KEY SW MS6A 1AA0B10C34000 610 299 4162 ASSY,PWB,P.F. MD8A 1AA0B10C352BB 610 299 7293 ASSY,PWB,POWER MM8B 1AA0B10C352DA 610 294 1708 ASSY,PWB,LINE FILTER MS6A 1AA0B10C3520C 610 294 1715 ASSY,PWB,R/C MS6A 1AA0B10C3520D 610 297 1798 ASSY,PWB,A...

Page 63 - AV SUB BOARD

MM8-NB3E00 -63- Electrical Parts List D2057 407 187 8209 ZENER DIODE UDZ12B-TE-17 D2058 407 187 8209 ZENER DIODE UDZ12B-TE-17 D2059 407 187 8209 ZENER DIODE UDZ12B-TE-17 D2811 407 179 0501 ZENER DIODE UDZ6.2B-TE-17 D2812 407 179 0501 ZENER DIODE UDZ6.2B-TE-17 D3001 407 179 0501 ZENER DIODE UDZ6.2B-T...

Page 76 - ACCESSORIES

MM8-NB3E00 Electrical Parts List -76- D2842 407 187 8209 ZENER DIODE UDZ12B-TE-17 D2843 407 187 8209 ZENER DIODE UDZ12B-TE-17 D2844 407 187 8209 ZENER DIODE UDZ12B-TE-17 D3111 407 149 0807 DIODE 1SS355-TE-17 D3112 407 149 0807 DIODE 1SS355-TE-17 D3161 407 149 0807 DIODE 1SS355-TE-17 D3171 407 149 08...

Page 78 - Mechanical Parts List; CABINET PARTS

MM8-NB3E00 -78- ■ Mechanical Parts List Note: Parts order must contain Chassis No., Part No., and Descriptions. ● CABINET PARTS 2 14 12 4 7-a 31 7-b 22 1 8 5 7 13 35 6 18 25 11 15 23 34 9 32 28 24 30 16 17 26 7-a 41 10 42 42 13 42 42 7-b 33 21 27 29 3

Page 80 - Optical Parts List

MM8-NB3E00 -80- 46 44 44 46 44 44 ■ Optical Parts List 46 57 56 46 46