ViewSonic PJ750 Service Manual
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- ViewSonic PJ750 | Service Manual - Page 1
Service Manual, ViewSonic PJ750 Model No. VPROJ22826-1W Color High Brightness XGA Ultra-Portable Projector I 1 milliiMitINII. P1750 (PJ750 SM 460 - Rev. la - November 2001) ViewSonic® 381 Brea Canyon Road, Walnut, California 91789 USA - (800) 888-8583 - ViewSonic PJ750 | Service Manual - Page 2
ViewSonic is a registered trademark of ViewSonic Corporation. All other trademarks used within this document are the property of their respective owners. Revision History Revision 1.0 Date 11/1/01 Description Of Changes Initial Issue - DCN1839 Approval T. Sears ii PJ750 Service Manual - ViewSonic PJ750 | Service Manual - Page 3
TABLE OF CONTENTS CAUTION AND SERVICE WARNING 1 1. Features 2 2. Specifications 2 3. Location of Features, Controls, and I/O 3 4. Adjustments 5 5. Troubleshooting 11 6. Assembly Removal, Replacement, and Maintenance 17 7. Block Diagram 22 8. Interconnection Diagaram 23 9. Wiring - ViewSonic PJ750 | Service Manual - Page 4
mentioned in this manual. ServiceWarning 1. The lamp can be exteemly HOT. Be careful to avoid burning your fingers when replacing the lamp. 2. Never touch the lamp bulb. Dropping it or giving it a shock may cause the lamp to burst. 3. High voltage is present in the projector for the lamp circuit, so - ViewSonic PJ750 | Service Manual - Page 5
: 0-35°C : -20-60°C Remote control transmitter x 1 RGB cable x 1 AudioNideo cable x 1 Mouse cable (PS/2) x 1 POWER cord x 3 Battery x 2 Carrying bag x 1 Handle x 1 CD-ROM (User's guide with Safety Instructions) x 1 Quick start guide x 1 ViewSonic Corporation 2 CONFIDENTIAL -- DO NOT COPY PJ750 - ViewSonic PJ750 | Service Manual - Page 6
/LEFT VIEW OF THE PROJECTOR Control Panel Foot Adjuster Button Air Filter and Intake (for the Cooling Fan) Rear Foot Adjuster e*O Zoom Knob Focus Ring Remote Control Sensor Lens Slide Lens door Foot Adjuster INPUT Button LAMP Indicator TEMP Indicator POWER Indicator RESET Button MENU Button - ViewSonic PJ750 | Service Manual - Page 7
or place it on any wet object. • Do not place the Remote control transmitter close to the cooling fan of the projector. • Do not disassemble the Remote control transmitter in case of malfunction. Please bring it to the service station. ViewSonic Corporation 4 CONFIDENTIAL -- DO NOT COPY PJ750 - ViewSonic PJ750 | Service Manual - Page 8
, warm up the projector for about 10 min. (Blank white) 2.Set Zoom Wide to Max. and project an image a distance of 40 inches. 3.Normalizing the video adjustment. (Press the [MENU] button of the Remote control transmitter to display the Setup menu, then press the [RESET] button.) *note : The - ViewSonic PJ750 | Service Manual - Page 9
Gamma, 14%, R: and B: so that the color coordinates (x, y) at the center of the screen take on the following values. x = (x1 - 0.010) ± 0.003 y = (y1 - 0.025) ± 0.005 ViewSonic Corporation 6 CONFIDENTIAL -- DO NOT COPY PJ750 - ViewSonic PJ750 | Service Manual - Page 10
the Remote control RESET] key and select [DEFAULT]. • When only 1 tone is to be reset, place the cursor on the tone to be reset press the [RESET] key and select [DEFAULT]. • Single tone and monochrome resets cannot be performed. ViewSonic Corporation 7 CONFIDENTIAL -- DO NOT COPY PJ750 - ViewSonic PJ750 | Service Manual - Page 11
is [G] monochrome, press the [MENU SELECT] key on the Remote control transmitter to change to solid white. 3. Adjust the color coordinates starting in order from the small number points. ViewSonic Corporation 8 6. This completes the adjustments required for . CONFIDENTIAL -- DO NOT COPY PJ750 - ViewSonic PJ750 | Service Manual - Page 12
No. 2] [G:]. If the background is [G] monochrome, press the [MENU SELECT] key on the Remote control transmitter to change to solid white. 6. View measurement point [No. 2] and [No. 3]. [MID] adjustments as described in steps 4 to 12 above. ViewSonic Corporation 9 CONFIDENTIAL -- DO NOT COPY PJ750 - ViewSonic PJ750 | Service Manual - Page 13
14 12 16 ® 0 0® 0 00 7 5 9z 1 13 No. 9 deviation range 14 12 16 ® 0 10 0 1 3 1 0 5 9 15 13 1 No. 17 deviation range 8 12 0 0 CD 0 00 0 03 11 0 9 15 © 1 ViewSonic Corporation 10 CONFIDENTIAL -- DO NOT COPY PJ750 - ViewSonic PJ750 | Service Manual - Page 14
5. Troubleshooting Check points at trouble shooting TH950 pWB ass'y SENSOR S301 ESPL - - IA91 00 1404 E803 E807 809 1 I_ E808 I Ncr(f) 000 665 Or 000 S306 S308 TSW {TEMPERATURE] SENSOR 1105 El E105 L PWB ass'y Main S309 ViewSonic Corporation 11 CONFIDENTIAL -- DO NOT COPY PJ750 - ViewSonic PJ750 | Service Manual - Page 15
Is the LAMP COVER set? NG Set the LAMP COVER OK Is the LAMP connection? NG Set the LAMP again OK PWB ass'y Main H (More than 6V) Measure voltage at the (2) (TP73) of E809 on the PWB ass'y Main. L (OV) Lirn't SW (PWB ass'y SW) ViewSonic Corporation 12 CONFIDENTIAL -- DO NOT COPY PJ750 - ViewSonic PJ750 | Service Manual - Page 16
does not light What is the state of LAMP indicator during operation? Not light Light Change the lamp. Does lamp light? Light Lamp Not Light Is the voltage at L817 on the PWB at disconnecting E302. about 10kO PWB ass'y Main ViewSonic Corporation 13 CONFIDENTIAL -- DO NOT COPY PJ750 - ViewSonic PJ750 | Service Manual - Page 17
pins '2) , ,C) ,0') of NO E800 on the PWB Power unit (circuit) ass'y Main? (2) (TP46): +14V YES (TP47): +17V 0C) (TP48): +6V (TP49): +4.3V PWB ass'y Main LCD Panel ViewSonic Corporation 14 CONFIDENTIAL -- DO NOT COPY PJ750 - ViewSonic PJ750 | Service Manual - Page 18
signal input at these pins of EV01 on the NO PWB ass'y Main? YES Oe : S-CIN • : S-YIN : Composite video PWB ass'y Signal PWB ass'y Main LCD module ass'y ViewSonic Corporation 15 CONFIDENTIAL -- DO NOT COPY PJ750 - ViewSonic PJ750 | Service Manual - Page 19
NO PWB ass'y Main? YES © : Audio(L) : Audio(R) PWB ass'y Signal PWB ass'y Main Speaker Can not control to RS-232C ) Check at operating mode Pin No 1 RS-232C 2 3 6 SELO 7 RTS 9 A e : RXD PWB ass'y Signal PWB ass'y Main ViewSonic Corporation 16 CONFIDENTIAL -- DO NOT COPY PJ750 - ViewSonic PJ750 | Service Manual - Page 20
6. AssemblyRemoval, Replacement, andMaintenance • Cautions when removing the PWB ass'y Main When removing the PWB ass'y Main, there is the Upper case ass'y and PWB ass'y Main on the Bottom case ass'y. -4- Speaker Wire from Speaker ViewSonic Corporation 17 CONFIDENTIAL -- DO NOT COPY PJ750 - ViewSonic PJ750 | Service Manual - Page 21
with the air filter removed. •When the air filter is clogged with dust etc. the CHECK AIR FLOW message appears on the screen and the power supply is switched OFF automatically to prevent the temperature rising inside the projector. ViewSonic Corporation 18 CONFIDENTIAL -- DO NOT COPY PJ750 - ViewSonic PJ750 | Service Manual - Page 22
with this remote control transmitter. Also projector is switched ON. NOTE: The LAMP is also red when the lamp unit reaches high temperature. Before replacing the lamp, switch power OFF, wait 20 minutes, and switch power ON again. If the LAMP indicator is still red, replace the lamp. ViewSonic - ViewSonic PJ750 | Service Manual - Page 23
the lamp timer without replacing the lamp. Reset the lamp timer always when replace the lamp. The message functions will not operate properly if the lamp timer is not reset correctly. 1,2 3 2 C 3 0 3! O c Cm'E 0r0 O !, De ICC • O ViewSonic Corporation 20 CONFIDENTIAL -- DO NOT COPY PJ750 - ViewSonic PJ750 | Service Manual - Page 24
LAMP, RESET THE LAMP TIMER" "CHANGE THE LAMP" "AFTER REPLACING LAMP, RESET THE LAMP TIMER" "THE POWER WILL TURN OFF AFTER 20 Hr." Lamp has 1,700 hours on it and may need to be changed. Lamp has 1,979 hours on it. See "Reset the lamp timer" Blinking of "CHANGE THE LAMP" "AFTER REPLACING LAMP, RESET - ViewSonic PJ750 | Service Manual - Page 25
SiH S/H 0.9Type LCD • PANEL CTL) ► RS-232C I MOUSE USB CTL AC INPUT SUB CPU -0 SIP SP SP IR RECEIVER IR RECEIVER TEMP TEMP SENSOR • DAC DAC 4- P/S CONTROL PANEL DC POWER REGURATO FAN FAN DC POWER SUPPRY PWB LAMP POWER SUPPRY PWB Lamp OPTICAL UNIT PROJECTION LENS AdO3 ION Oa - ViewSonic PJ750 | Service Manual - Page 26
) o o AC INLET E808(PHM CNBAR CN2 1 LAMP ON/OFF 2 GND 2 3 LAMP.MISS 3 CN1 DC IN+ NC DC IN- CN101 1 (VH3P) 2 3 LAMP UNIT ASS'Y POWER OUT+ OUT- UNIT (BALLAST) TEMPERATURE SENSOR CNTS CN04(EH2P) TEMP OUT TEMP RETURN 2 ViewSonic Corporation 23 CONFIDENTIAL -- DO NOT COPY PJ750 - ViewSonic PJ750 | Service Manual - Page 27
unit CN101 [ Speaker (R) ESPR ESPL PWB ass'y Main Upper view (Speaker) Upper case 1 Speaker (L) AdO0 ION oa -- 1VIINB0IANO3 Side view (Power unit (Circuit I Ballast)) Projection lens side - ViewSonic PJ750 | Service Manual - Page 28
(Lead of Power unit (Ballast) lead through the opening in the Ballast cover the inside of Duct plate. To PWB ass'y Main Cemperature switch (Lamp lead E801,E802 AdO3 ION oa -- 1VIINBCIIANO3 Route the earth lead of Optical unit through the inside of Duct plate and Optical unit. (PAS1 With - ViewSonic PJ750 | Service Manual - Page 29
projection lens side. CNPOW, CNBAR and CNTH Position of rib of front bezel Position of rib of front bezel Sensor PWB ass'y To Speaker (L) Remote control v fan To Sirocco fan, Lamp E800 rn E808 • I 'Panel e Sirocco fan Panel B. E808 CNBAR) To Sirocco fan, Lamp and Panel B. AdO3 ION - ViewSonic PJ750 | Service Manual - Page 30
661 Gld 9},1 091 6}3 1, 3 =di LEG LO t I 9V614,1 Id OCG 0 ) • 60 30 a. OZO yRni m 61.0 34,,k1 3 GZ 6Erl I 630 630 630 14 £301 H z No.co 0 Z 0 0 0 ViewSonic Corporation 27 330 •zr (1' C' 1 Lt) fl -0i-1, 30d I LOd 090 30c1 0.1 aA w CONFIDENTIAL -- DO NOT COPY - ViewSonic PJ750 | Service Manual - Page 31
osed AdO3 ION 00 -- 1VIIN3OHNO9 8Z m O uopeiod.roo oposma!A u IN3 -o m T C r -- rA701 I C11)4 - I R114 N. C115 6118 R101 C101 H (r C103 I I C102 p, C106 C104 h C105 u C107 O109 R104 R103 R105 La 0 R107 O116 R108 R113 R112 T,„ RQ1-71:--11-H9cH1V: R111 R110 C117 R109 - ViewSonic PJ750 | Service Manual - Page 32
osed N) AdO0 ION oa J1VIIN3ClIdNO0 6Z m 0 from POWER UNIT (CIRCUIT) 1/2 CI 10 5232 I NN S N 07 I C202 Q203 C207 0201 PC201 R2oi R215 C203 C205 .ors' r'J C204 R214 PC202 0 R213 R212 R.211 Er8 020±3i 0209 0212 R220 NNN NfI D205 0204 C211 0210 R224 R228 UORBIOCI.103 ORMSNialA 0 m - ViewSonic PJ750 | Service Manual - Page 33
SBX8035F i 2 3 C901 100P R901 100 TP02 R902 47 2125 E 0..., Nu3 C..) w x + mu E ',TN O NM 0 M 0 I OW1 OLo• `N,.. TP01 TP03 1 `I. 2 E901 0F13- 3PL 0 z CD w Io o o > r w F PWB ass'y REMOTE F i I ViewSonic Corporation 2 I 30 3 I 4 CONFIDENTIAL -- DO NOT COPY PJ750 - ViewSonic PJ750 | Service Manual - Page 34
4005 (Ail) 2 AGOG (012) UV7 (B03> CPU-RESET EMU-RESET 502 . 015,0 113 S' 'gr I201 P0154-10RK (1'2 R2E7 022B 33 IRE0 , ORES 0057 ORES LAMP-00NT I 093 1000 GI73- 1-----2CDAT 8274 1W) PWB ASST MAIN (1/10) 1 ViewSonic Corporation 2 3 4 5 31 Confidential - Do Not Copy 6 PJ750 - ViewSonic PJ750 | Service Manual - Page 35
4 GNP 4 CUE LEE 100 2348 4g95,, R2A 10K 2 ViewSonic Corporation A18 All 916 418 413 Al2 411 I 410 AO 07 014 a D5 a D13 C3 NC OD 140 012 WE 04 SA RESET 0283 a VCC 829880047-10096 VPP Di WP a PV/SY a 03 a PJ750 (VPROJ22826- 1W)PWB ASSTMAIN(2/10) 3 4 5 6 32 : Confidential - Do - ViewSonic PJ750 | Service Manual - Page 36
' Larne error 7.. $ TaMp error V V to 2 ViewSonic Corporation A gfill4EUA POWER CC IA By CI 2A g DE2 . 20 1mPu ' 0 12 C313 ' 10DP RESET paos griy72 12 O tLi_. 0914 101P I KITE LAMP U22210VT LED-0 LED-R 14! 4 ' ok !3 - - 03 2,1P020MYT DOWN I TEMP I I LAMP GREEN GEO V V V VV PJ750 - ViewSonic PJ750 | Service Manual - Page 37
1006 REMOTE 778 L81fi C814 100P L(iALJ) 0815 100P (SO 0.04 I Atavo.m, 0 eieN TPBf Re. REMOTE LAMP MISS 0 ITP53 TT- I TP5' L924 618006001 1e ALMA r 2 ViewSonic ZH, 3P-H 0 FONDS TP63 LCD-0 TIPS° 0 161.0211601 6821A601 PJ750 (VPROJ22826- 1W) PWB ASS'Y MAIN (4/10) 3 4 5 6 34 Confidential - - ViewSonic PJ750 | Service Manual - Page 38
A ViewSonic Corporation PJ750 (VPROJ22826- 1W) PWB ASS'Y MAIN (5/10) 1 1, 0141651 3 1404 6503, 3015 C) S,N 0 -V.71 A', 1F,11 0469 naFN 5458 EN C459 D. 01 R457 33 R478 39 4650.0 7_2,001_ . 5.5 n RESET 3 5,() 4 VOD 5 SCS 6 DATA SOLK 5 TEST1N1 9 TOI 0 TMS 'MK TRST 13 TOO 4 TEST1N2 5 TESTIN3 NC - ViewSonic PJ750 | Service Manual - Page 39
400 \SDP \ 803 \PIA \ REM \ PDS \317 \ 01)8 \ BBB MIO PONER5 17 1 ViewSonic Corporation 8 C 0523 0.1 17, 072 rN CB94 0. 0811 C7 0. 4 1 NC 2 080 I 05 iSE061358 063 :3e4N S97.-:-. reg 16 E PJ750 (VPROJ22826- 1W) PWB ASS'Y MAIN (6/10) 2 3 4 5 36 Confidential - Do Not Copy - ViewSonic PJ750 | Service Manual - Page 40
176 0669 155 477/25 [EMC PSCNTA I I PSCNT PSC TC PSC TO FRP OA IDB ViewSonic Corporation 6894 47/06 SANK * C693 0.1 12!I PCS6 000 R5AI 1DK 0056 V536 E BR! 4Y 5A 0711 0705 BB 00 R766461 HC615/ 10 PJ750 (VPROJ22826- 1W) PWB ASS'Y MAIN (7/ 10) 3 4 5 6 Confidential - Do Not Copy 37 - ViewSonic PJ750 | Service Manual - Page 41
PJ750(VPROJ22826-1W)PWB ASSTMAIN(8/10) ViewSonic Corporation 0145 -- 1005 • I103 84035FP 0146, 100/5 3 CEMC 1106 5574LVC15700014 --7773 IA STIR -G 16 4A 'Y •--G 2A 42 3 090 i0CtiM ac 21106 core muao, 03910201? 727? 0000 8 2 3 4 5 6 38 Confidential - Do Not Copy A B C D E PJ750 - ViewSonic PJ750 | Service Manual - Page 42
rf0 FIV22 2.7K my L RV18 33 RV19 33 V19 103 jl V18 fR00V33 / 1 It RV17 33 V16 V17 O 0 VFIELO VPEN VCLK I21047 I2CCLK FLI/R-OFF E ViewSonic Corporation PJ750 (VPROJ22826- 1W) PWB ASS'Y MAIN (9/ 10) 2 3 4 5 Confidential - Do Not Copy 39 6 PJ75O - ViewSonic PJ750 | Service Manual - Page 43
11MCON 2 41 1 A ViewSonic Corporation EVOI 30P-8- B 0 0 3° 0 V22 2 0 O 29 6V23 0 0 28 V24 0 027 O V25 O 0 26 oV26 0 0 25 V30 V31 I ,V32 OV39 V33 0 V27 0 0 24 V34 0 2 V280 V29 90 02 00 021 110 0 20 01 13 0 0 18 14 0 0 17 5 0 16 V35 V36 V37 V38 0 REMOTE MOUSE TX I RX CS5 - ViewSonic PJ750 | Service Manual - Page 44
2SC3775 RS9B 75 NNN RS99 75 RS96 0 ESA8 1K RSA3 820 4REN +5VST ESM1 O C 0 D RT 0 0 61 L 06 • O L H 60 o 9 0 0L O 9 98 0 0 C 92 0 a° 0 00 0 TPO6 O E TP07 1 ViewSonic Corporation OTROS PJ750 (VPROJ22826- 1W) PWB ASS'Y SIGNAL (1/3) 2 3 4 5 41 : Confidential - Do Not Copy - ViewSonic PJ750 | Service Manual - Page 45
10 3225 ABLE amT TPO9 RAD 0 11 00 0 TX0 05.4 O A MOUSE DATA. A T212 REMOTE Sr TPI3 02 0 LIN CLK TP22 O TP14 04 S. CIN Cr/Pr 7215 0 g VI 7.210 82 D R T 0115E E 1 1 ViewSonic Corporation PJ750 (VPROJ22826- 1W) PWB ASS'Y SIGNAL (2/ 3) 2 3 4 5 42 Confidential - Do Not - ViewSonic PJ750 | Service Manual - Page 46
470 IMDB H074LV32ATELL I503 1000150-02016 IR Decode V00 VMS XIN XOUT CNVSS /RESET FO F1 0935 0 100 GO/INT Si 00 DI D2/C 03/K 20 2125 H •4 SC2003 U3 2' 22 F8470 220 2128 RM77 212 1 ViewSonic Corporation R I xi0 5 ROO TO E PJ750 (VPROJ22826- 1W) PWB ASS'Y SIGNAL (3/ 3) 2 3 4 5 - ViewSonic PJ750 | Service Manual - Page 47
11. Disassembly / Exploded Parts Diagram M : Metric screw T :Tapping screw 5 0 T3X12 T3X12 O 24 •^N. • M3X8 0 22 M3X65 C.? :222 2] O 1:k QQO c, 'oec41.6.0.. QQ ') 3 ViewSonic Corporation M3X65 7 9 V 6 M3X6 M3X6 44 CONFIDENTIAL -- DO NOT COPY PJ750 - ViewSonic PJ750 | Service Manual - Page 48
M : Metric screw T :Tapping screw tip M3X8 26 T3X12 M3X8 I 23 0 M3X10 25 17 0 23 27 12 M3X25 T3X12 T3X12 11 T3X12 T3X12 a F fiD 21 13 19 18 T2X5 16 ViewSonic Corporation T3X12 M3X8 15 M3X8 fD ti? 4 T3X10 0. M3X8 M3X 0 0 3 4 45 CONFIDENTIAL -- DO NOT COPY PJ750 - ViewSonic PJ750 | Service Manual - Page 49
CONNECTOR LCD/LENS PRISM ASS'Y C4 LAMP UNIT ASS'Y HANDLE C4 POWER SUPPLY CORD (EUROPE TYPE) W/CORE POWER SUPPLY CORD (US TYPE) POWER SUPPLY CORD (CHINA TYPE) 3 CONDUCTOR VIDEO CABLE RGB-D CABLE (15PIN MALE TO 15PIN MALE) PS/2-2 MOUSE CABLE W/CORE REMOTE CONTROL UNIT CLEANING TOOL FOR DUST ViewSonic - ViewSonic PJ750 | Service Manual - Page 50
RS-232C cable has the user's manual with RS-232C command table. (1) Turn off the projector and computer power supplies and connect with the RS-232C cable. (2) Turn on the computer power supply and, after the computer has started up, turn on the projector power supply. control terminal D-sub 15-pin - ViewSonic PJ750 | Service Manual - Page 51
an interval of at least 40ms between the response code and any other code. • The projector outputs test data when the power supply is switched ON, and when the lamp is lit. Ignore this data. • Commands are not accepted during warm-up. ViewSonic Corporation 48 CONFIDENTIAL -- DO NOT COPY PJ750 - ViewSonic PJ750 | Service Manual - Page 52
00 05 30 04 00 05 30 05 00 05 30 06 00 05 30 07 00 05 30 08 00 05 30 00 00 ViewSonic Corporation 49 CONFIDENTIAL -- DO NOT COPY PJ750 - ViewSonic PJ750 | Service Manual - Page 53
D9 D8 02 00 20 60 00 00 (Example of Return) 00 00 01 00 02 00 03 00 Get (Normal) (Cover-error) (Fan-error) (Lamp-error) 04 00 05 00 06 00 (Temp-error) (Air flow-error) (Lamp-Time-over) ViewSonic Corporation 50 CONFIDENTIAL -- DO NOT COPY PJ750 - ViewSonic PJ750 | Service Manual - Page 54
EF 03 06 00 02 DO 01 00 09 20 02 00 BE EF 03 06 00 51 D1 02 00 09 20 00 00 ViewSonic Corporation 52 CONFIDENTIAL -- DO NOT COPY PJ750 - ViewSonic PJ750 | Service Manual - Page 55
22 00 22 00 00 OA 00 04 00 05 00 09 00 02 00 08 00 00 22 07 00 00 22 00 00 ViewSonic Corporation 53 CONFIDENTIAL -- DO NOT COPY PJ750
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Service
Manual,
ViewSonic
PJ750
Model
No.
VPROJ22826-1W
Color
High
Brightness
XGA
Ultra
-Portable
Projector
milliiMitINII.
P1750
I
1
(PJ750
SM
460
-
Rev.
la
—
November
2001)
ViewSonic®
381
Brea
Canyon
Road,
Walnut,
California
91789
USA
-
(800)
888-8583