Page 1 MODEL PX-42M2A PX-42M2G PlasmaSync™ Multimedia Monitor SERVICE MANUAL PART No. 399910943 Better Service Better Reputation Better Profit SAFETY CAUTION: Before servicing this chassis, it is important that the service technician read and follow the “Safety Precautions” and “Product Safety Notice” in this Service Manual. WARNING: SHOCK HAZARD - Use an isolation transformer when servicing.
Page 2: Table Of Contents
CONTENTS SAFETY PRECAUTIONS ..........................2-1 USERS MANUAL ............................... 3-1 TROUBLE SHOOTING ............................4-1 METHOD OF ADJUSTMENTS .......................... 5-1 CIRCUIT DESCRIPTION ........................... 6-1 METHOD OF DISASSEMBLY ........................... 7-1 DISASSEMBLY ..............................8-1 METHOD OF WIRING ............................9-1 PACKAGING ..............................10-1 REPLACEMENT PART LIST ........................... 11-1 CONNECTION DIAGRAMS ..........................
Page 3: Safety Precautions
SAFETY PRECAUTIONS CAUTION RISK OF ELECTRIC SHOCK DO NOT OPEN CAUTION: TO REDUCE THE RISK OF ELECTRIC SHOCK, DO NOT OPEN TOP COVER. NO USER-SERVICEABLE PARTS INSIDE. REFER SERVICING TO QUALIFIED SERVICE PERSONNEL. This symbol warns the user that unin- This symbol alerts the user that important sulated voltage within the unit may have literature concerning the operation and...
Page 4 SAFETY PRECAUTIONS 1. Before returning an instrument to the customer, al- AC Leakage Test ways make a safety check of the entire instrument, in- cluding, but not limited to, the following items. (READING SHOULD NOT BE ABOVE 3.5 mA) a. Be sure that no built-in protective devices are LEAKAGE DEVICE CURRENT...
Page 5 SAFETY PRECAUTIONS 5. Observe original lead dress. Take extra care to assure correct lead dress in the following areas: a. near sharp edges, b. near thermally hot parts— be sure that leads and components do not touch thermally hot parts, c. the AC supply, d. high volt- age, and e.
Page 6 PRECAUTIONS DE SECURITE 1. Avant de remettre un appareil à un client, faire courant ne doit dépasser 3.5 milliamp. Inverser la toujours d'abord un examen de sécurité de fiche de courant de l'appareil dans la prise et l'appareil en entier comprenant, mais ne s'y limitant répéter le test.
Page 7 PRECAUTIONS DE SECURITE b. Certains châssis de moniteur ont habituellement 6. Les composants, parts (pièces) et/ou fils qui ont été 85V (RMS) entre le châssis et la prise de terre, en trouvés surchauffés devraient être remplacés avec fonction de la polarité de la prise de courant. Ces les composants, pièces et fils s'y reliant avec d'autre châssis peuvent ne comporter aucun risque qui ont les mêmes spécifications que les originales.
Page 8 USERS MANUAL...
Page 9 USERS MANUAL...
Page 10 USERS MANUAL...
Page 11 USERS MANUAL...
Page 12 USERS MANUAL...
Page 13 USERS MANUAL...
Page 14 USERS MANUAL...
Page 15 USERS MANUAL...
Page 16 USERS MANUAL...
Page 17 USERS MANUAL 3-10...
Page 18 USERS MANUAL 3-11...
Page 19 USERS MANUAL 3-12...
Page 20 USERS MANUAL 3-13...
Page 21 USERS MANUAL 3-14...
Page 22 USERS MANUAL 3-15...
Page 23 USERS MANUAL 3-16...
Page 24 USERS MANUAL 3-17...
Page 25 USERS MANUAL 3-18...
Page 26 USERS MANUAL 3-19...
Page 27 USERS MANUAL 3-20...
Page 28 USERS MANUAL 3-21...
Page 29 USERS MANUAL 3-22...
Page 30 USERS MANUAL 3-23...
Page 31 USERS MANUAL 3-24...
Page 32 USERS MANUAL 3-25...
Page 33 USERS MANUAL 3-26...
Page 34 USERS MANUAL 3-27...
Page 35 USERS MANUAL 3-28...
Page 36 USERS MANUAL 3-29...
Page 37 USERS MANUAL 3-30...
Page 38 USERS MANUAL 3-31...
Page 39 USERS MANUAL 3-32...
Page 40 USERS MANUAL 3-33...
Page 41 USERS MANUAL 3-34...
Page 42 USERS MANUAL 3-35...
Page 43 USERS MANUAL 3-36...
Page 44 USERS MANUAL 3-37...
Page 45 USERS MANUAL 3-38...
Page 46 USERS MANUAL 3-39...
Page 47 USERS MANUAL 3-40...
Page 48 USERS MANUAL 3-41...
Page 49 USERS MANUAL 3-42...
Page 50 USERS MANUAL 3-43...
Page 51 USERS MANUAL 3-44...
Page 52 USERS MANUAL 3-45...
Page 53 USERS MANUAL 3-46...
Page 54 USERS MANUAL 3-47...
Page 55 USERS MANUAL 3-48...
Page 56 USERS MANUAL 3-49...
Page 57 USERS MANUAL 3-50...
Page 58 USERS MANUAL 3-51...
Page 59 USERS MANUAL 3-52...
Page 60 USERS MANUAL 3-53...
Page 61 USERS MANUAL 3-54...
Page 62 USERS MANUAL 3-55...
Page 63 USERS MANUAL 3-56...
Page 64 USERS MANUAL 3-57...
Page 65 USERS MANUAL 3-58...
Page 66 USERS MANUAL 3-59...
Page 67 USERS MANUAL 3-60...
Page 68 USERS MANUAL 3-61...
Page 69 USERS MANUAL 3-62...
Page 70 USERS MANUAL 3-63...
Page 71 USERS MANUAL 3-64...
Page 72 USERS MANUAL 3-65...
Page 73 USERS MANUAL 3-66...
Page 74 USERS MANUAL 3-67...
Page 75 USERS MANUAL 3-68...
Page 76 USERS MANUAL 3-69...
Page 77 USERS MANUAL 3-70...
Page 78 USERS MANUAL 3-71...
Page 79 USERS MANUAL 3-72...
Page 80 USERS MANUAL 3-73...
Page 81 USERS MANUAL 3-74...
Page 82 USERS MANUAL 3-75...
Page 83: Trouble Shooting
TROUBLE SHOOTING No energization of POWER circuit Is POWER LED Is the power plug correctly Rearrange the power plug lit? connected to the wall outlet? connection correctly. Is there AC 100V behind the Fuses F1 and F2 have blown fuses F1 and F2? out.
Page 84 TROUBLE SHOOTING Is 0V observed at Pin Failure in peripheral area of IC6800 IC6800 (ANALOG PWB)? Is 0V observed at Pin Failure peripheral area of IC6553 of IC6553 (ANALOG PWB)? 0V at Pin 1: Failure in fan’s peripheral area of the set 0V at Pin 2: Failure in fan’s peripheral area in the POWER unit Is 0V observed at Pin 57 of Failure in peripheral area of IC6800...
Page 85 TROUBLE SHOOTING Is 0V observed at Pin Failure in peripheral area of IC6800 IC6800 (ANALOG PWB)? Failure in peripheral area of MODULE circuit Is “H” maintained at Pins Failure in peripheral area of IC6800 of the PM connector? Is “H” maintained at Pin Failure in peripheral area of MODULE the PH connector? Is power supply available when...
Page 86 TROUBLE SHOOTING No display (no video screen display) Enter a color bar signal input. Is there on-screen display Refer to Fault Analysis for of VIDEO? ANALOG PWB and thereafter. Is there a video signal at With the signal line disconnected, Failure in signal TP1001? is there a video signal at the...
Page 87 TROUBLE SHOOTING Signal Y input is available Failure in peripheral area of at Pin 53 of IC5008. IC5008. Signal Y output is available Failure in peripheral area of from Pin 4 of IC5008. IC5012 ~ IC5017. Signal Y (or VIDEO) input Failure in peripheral area of is available at Pin 15 of IC5008.
Page 88 TROUBLE SHOOTING No display (no HD/DVD screen display) Enter a color bar signal input. Is there on-screen display Refer to Fault Analysis for of “HD” or “DVD”? ANALOG PWB and thereafter. Is there a video signal at With the signal line disconnec- Failure in signal TP1004? ted is there a video signal at...
Page 89 TROUBLE SHOOTING No display (no RGB/PC screen display) Enter a VGA or SVGA color bar signal input. Is there on-screen display Refer to Fault Analysis for of “PC”? ANALOG PWB and thereafter. Is LED lit in green ? Is there horizontal sync at Failure in the signal (Not in power management) Pin 13 of M1006, or vertical...
Page 90 TROUBLE SHOOTING No display (fault analysis for ANALOG PWB and thereafter) Is there a video signal at TP6139, Failure in ANALOG PWB (peripheral area of the signal line TP6140, and TP6141? before AD converter) Is there a signal of 5Vp-p at Pins 1 Failure in ANALOG PWB (signal circuit or sync system circuit ~ 47 of the AD connector of AD converter and thereafter, or peripheral area of IC6800).
Page 91 TROUBLE SHOOTING No video in NTSC Mode Signal Y is available at Failure in Q9001 ~ Q9003. TP9003. There is a VIDEO signal There is an FSC signal Failure in Q9010/ at TP9007. (3.5MHz sine wave) at TP9008. Q9015/Q9016/Q9023. There is a VIDEO Failure in There is an 8FSC signal There is a vertical...
Page 92 TROUBLE SHOOTING No PAL Reproduction Signal Y is available at Failure in Q5007/Q5046/IC5015. TP5004. There is a VIDEO signal There in an FSC signal (3.58MHz Failure in the peripheral at TP5030. sine wave) at Pin 19 of IC5007. area of Q5023. There is a VIDEO Failure in Pin 10 of IC5007 is led to LO.
Page 93 TROUBLE SHOOTING No color Reproduction RGB signal is available at Failure in ANALOG PWB Pins 1, 3, 5 of the POVD connector. R-Y/B-Y signal is available Failure in the peripheral area of IC5008. at Pins 51 and 52 of IC5008. R-Y/B-Y signal is available Failure in the peripheral area of IC5012.
Page 94 TROUBLE SHOOTING No NTSC color generation Signal C is available at Pin 13 of IC5008. Failure in the peripheral area of IC5008. Signal C is available at Pin 14 of IC5006. Failure in the peripheral area of IC5006. Signal C is available at TP9004. Failure in Q9005 ~ Q9008.
Page 95 TROUBLE SHOOTING Abnormality in the sync system Enter a color bar signal input. Is it a VIDEO input? Is it an HD/DVD input? Is there a video signal at Is there a video signal Is threr a sync signal TP1025? at Pin 2 of the “HD”...
Page 96 TROUBLE SHOOTING No audio signal from speaker output Audio signal is available Voltage is 3V or about TP3003. Failure in IC3003. at POSR/POSL. Audio signal is available at TP3004/3005. Audio signal is available Failure in Q3003 and Q3004. at Pins 10/21 of IC3001. Audio signal is available Failure in the peripheral area at TP3001/3002...
Page 97 TROUBLE SHOOTING No audio output from AUDIO OUT Audio signal is available at TP4006/4007. Check the Super-woofer side. Audio signal is available at Pins 1/3 of the Faiurte in IC4003 POMS connector. To Step 8 (Page 4-14) 4-15...
Page 98: Method Of Adjustments
METHOD OF ADJUSTMENTS I. Application This specification covers the method of adjustments for the color plasma display “PX-42M2A/G” for domestic users. II. Adjustment items <Analog Block> 1. Setting and confirmation before adjustments 2. Adjustment of µPC1885 3. Adjustment of image level (M52327SP) 3-0.
Page 99 METHOD OF ADJUSTMENTS <Protector Operation> 1. Confirmation of overcurrent protector 2. Confirmation of reduced-voltage protector <Printed Wiring Board Layout> 1. ANALOG board (PWC-4214) 2. VIDEO board (PWC-4213) 3. AUDIO board (PWC-4216) 4. Top view of power unit <Signal Waveforms for Adjustment> 1.
Page 100 METHOD OF ADJUSTMENTS <ANALOG PWB> Adjustment for the ANALOG PWB, PWC-4214, should be performed in a pair with the VIDEO PWB, PWC-4213A. The ANALOG PWB shall be adjusted if the ANALOG PWB or VIDEO PWB has been replaced. 1. Setting and confirmation before adjustments 1-1 Insert a short-plug on the opposite side of “...
Page 101 METHOD OF ADJUSTMENTS µ 2. Adjustment of PC1885 µ 2-1 Adjustment of PC1885 (1) Apply PC mode 5 (PC98 480@60Hz program No. 35) to the PC/RGB input terminal. (2) Connect an oscilloscope to TP6115 (SHAPE1) and adjust VR6103 until the Hi period of output pulses attains about 2.0µs.
Page 102 METHOD OF ADJUSTMENTS (6) Connect an oscilloscope to TP6139 (R-OUT) and make adjustments by pushing the cursor keys “<” and “>” until the pedestal level attains 600mV DC. (7) Confirm that the pedestal level is maintained at 600mV DC at TP6141 (G-OUT) and TP6140 (B-OUT). Advance to the next step (8) when 600mV DC is secured.
Page 103 METHOD OF ADJUSTMENTS 3-2 Adjustment of video level (1) Select VIDEO input using either the remote controller or the CTL PWB input selector switch. (2) Press the “Menu” key to call the main menu on the screen, move the cursor to “Information” and press “OK”. (3) Move the cursor to Color System, press “OK”, and select “3.58NTSC”...
Page 104 METHOD OF ADJUSTMENTS (22) Change over the input signal to PAL and repeat the above steps (8) to (21). However, adjustment of “TINT” is omitted. (23) Change over the input signal to the SECAM color bar. (24) Push the “MENU” key to obtain the “D-CONTROL SECAM” screen. (25) Push the cursor keys “...
Page 105 METHOD OF ADJUSTMENTS (9) Connect an oscilloscope to TP6139 (R-OUT) and make adjustments by pushing the cursor keys “<” and “>” until the amplitude of the image part attains 1.80Vp-p. (10) Confirm that the amplitude of the image part is maintained at 1.80Vp-p at TP6141 (G-OUT) and TP6140 (B- OUT).
Page 106 METHOD OF ADJUSTMENTS 5. Unit inspection for ANALOG PWB and VIDEO PWB 5-1 Setting of inverse gamma (1) Set the rotary switch SW6602 at “F.” (Setting at inverse gamma correction OFF) 5-2 Confirmation of video signal processing (1) Enter an NTSC lamp signal input in the VIDEO input terminal and select VIDEO input. (2) Confirm that the video signal appearing in the display makes correct gradation changes.
Page 107 METHOD OF ADJUSTMENTS 5-5 Confirmation of HD/DVD signal mode (1) Apply an HDTV signal to the HD/DVD input terminal and select the HD input. (2) Check that the LEDs “MO” and “FS” flash, that “FULH” lights, and that the other jig board check LEDs are off.
Page 108 METHOD OF ADJUSTMENTS 5-10 Confirmation of APL correction data * The slide switches SW4012 ~ SW4015 of the jig board shall be set at the lower side (Set at Lo). (1) Apply PC mode 5 (program No. 35 PC98@60Hz) to the PC/RGB input terminal and select the PC input. Apply a color bar signal input.
Page 109 METHOD OF ADJUSTMENTS 6-3 Writing (Jig changeover switch to “VSYNC” side) (1) Select “Writing” and “File Selection” in the PC monitor. Then select the objective EDID data (*.edi) in the “Parameter File Selection.” (Table 6-1) (2) Cancel V sync of the RGB signal having been entered in the jig. (3) Move the SW1001 socket to Pin side on the VI/O board (PWC-4213B), in order to enable writing.
Page 110 METHOD OF ADJUSTMENTS <Audio Output Block> 1. Confirmation before adjustments Ω 1-1 Connect resistance loads of 6 , 15W or more to the connectors “ P-SL” and “P-SR” for audio output. 1-2 Adjust VR4002 to its mechanical center. 1-3 Source voltage check Board name Terminal No.
Page 111 METHOD OF ADJUSTMENTS <Set Adjustment> 1. Adjustment of screen position and phase 1-1 Adjustment of video screen position (1) Apply an NTSC monoscopic signal to the VIDEO input terminal. (2) Select the VIDEO input with a remote control or the CTL PWB key. (3) Assume the setting mode for factory shipment, using a factory shipping adjustment command of the remote control.
Page 112 METHOD OF ADJUSTMENTS 1-3 Adjustment of PC/RGB screen position (1) Apply a signal input of Character H + + X in PC mode 3 to the PC/RGB input terminal. (2) Select the PC input with a remote control or the CTL PWB key. (3) Assume the setting mode for factory shipment, using a factory shipping adjustment command of the remote control.
Page 113 METHOD OF ADJUSTMENTS 2. Adjustment of -180V and +80V 2-1 Turn on the power switch of the main unit under the condition that no input signals are received. 2-2 Rotate the volume control of the “-180V ADJ” part in the power unit and make adjustments until the voltage values attain the state of “specified PDP module voltage value ±...
Page 114 METHOD OF ADJUSTMENTS <Protector Operation> 1. Confirmation of overcurrent protector Under discussion. Not realized yet. 2. Confirmation of reduced-voltage protector Under discussion. Not realized yet. 5-17...
Page 115 METHOD OF ADJUSTMENTS <Printed Wiring Board Layout> 1. ANALOG board (PWC-4214) IC6000 TP6130 (R) IC6301 VR6104 TP6115 TP6136 TP6137 TP6138 VR6103 IC6001 TP6117 IC6003 IC6300 TP6070 (GND) TP6139 TP6141 TP6140 IC6073 SW6501 SW6500 SW6550 IC6702 IC6805 5-18...
Page 116 METHOD OF ADJUSTMENTS 1. VIDEO board (PWC-4213) TP5022 (GND) TP5002 IC5001 IC5002 IC9006 IC9001 IC9002 TP5001 TP5021 (GND) IC9003 TP5003 (GND) TP5015 TP5014 DL5001 PWC-4213A TP5001 IC5008 VIDEO TP5003 PWC-4213B VI/O RGB-IN EXT-CONT S-VID 2. AUDIO board (PWC-4216) Heat sink L-TERM PWB R-TERM PWB PWC-4216A...
Page 117 METHOD OF ADJUSTMENTS 3. Top view of power unit TP5 TP6 D–80V D+80V D+5V ADJ AC Inlet 5-20...
Page 118 METHOD OF ADJUSTMENTS <Signal Waveforms for Adjustment> 1. VIDEO input 1-1 Input: Composite video input or Terminal-S input 1 system * The Terminal-S input is selected when a cable is connected to Terminal-S. 2. HD/DVD input (1) HD: Y/Pb/Pr component input, three-valued sync signal 100% Color Bar Signal (Unit : mVp-p) (2) DVD: Y/B-Y/R-Y component input (HD/DVD in common) 700 (All-white level)
Page 119 METHOD OF ADJUSTMENTS PC mode Signal name VU-6010 VU-6010 PC98 PC98 NTSC PAL/SECAM 400@56Hz 400@70Hz Definition 640*240 768*288 640*400 640*400 Dot clock frequency (MHz) 12.214 14.752 21.053 25.175 H frequency (kHz) 15.734 15.557 24.826 31.469 V frequency (Hz) 59.94 50.39 56.423 70.086 H total a (µS) (dots)
Page 120 METHOD OF ADJUSTMENTS PC mode Signal name PC98 VESA VESA XGA-2 480@60Hz @ 13” 480@72Hz 480@75Hz 480@75Hz Definition 640*480 768*480 640*480 640*480 640*480 Dot clock frequency (MHz) 25.175 30.24 31.5 31.5 31.5 H frequency (kHz) 31.469 37.861 37.5 39.575 V frequency (Hz) 59.94 66.667 72.809...
Page 121 METHOD OF ADJUSTMENTS PC mode Signal name VESA VESA VESA VESA I/O dater 600@56Hz 600@60Hz 600@72Hz 600@75Hz Wide Definition 800*600 800*600 800*600 800*600 852*480 Dot clock frequency (MHz) 49.5 34.006 H frequency (kHz) 35.156 37.879 48.077 46.875 31.722 V frequency (Hz) 56.25 60.317 72.188...
Page 122 METHOD OF ADJUSTMENTS PC mode Signal name PC98 VESA wide IDC-3000G IDC-3000G HD TV CEREB wide PAL 625P NTSC 525P Standard (Under proposal by NEC) Definition 864*480 848*480 768*576 640*480 1920*1034 Dot clock frequency (MHz) 242.526 33.75 29.687 24.39 74.25 H frequency (kHz) 37.5...
Page 123: Circuit Description
CIRCUIT DESCRIPTION I. Description of Analog PWB Circuit Operation 1. Video signal processing (1) HD decoder and PC interface blocks The component signal input (YPbPr, YCrCb) from the “HD” connector and the PC signal input from the “PC” connector are applied to the ANALOG PWB, and further to IC6110. In IC6110, the component signal is con- verted into RGB type and output is generated through PC-signal changeover.
Page 124 CIRCUIT DESCRIPTION In addition, IC6606 is in charge of controlling the ROM (IC6607, IC6608, IC6610, IC6611, IC6617, IC6618) for digital video signal processing control and the ROM control ICs (IC6612, IC6616, IC6619, IC6620). This pro- cessing is controlled by SROMRST from the microcomputer. The on-screen signal is generated at IC6609, which is controlled by OSDCS, VICLK, VIDATA from the micro- computer and by OSDCK, VDOSD, HDOSDD) from the timing controller block.
Page 125 CIRCUIT DESCRIPTION vertical pulses are generated based on NORHD (Pin 21) and DETVD. Pulses output from IC6506 are applied to various circuits for signals, such as INTHD to be output to VCO, sync signals for plasma display module, etc. 3. System control (1) Microcomputer block The microcomputer IC6800 for system control is in charge of various operation and control according to the signals to be displayed, such as input signal changeover, adjustment of timing for output signals from the...
Page 126 CIRCUIT DESCRIPTION II. VI/O PWB 1. Video input (1) Composite video input The video signal, input from M1001, is amplified by two times at IC1001. Since then, it is output from Pin 1 of the “YC” connector (at an output impedance of 75Ω), and transferred to the VIDEO PWB. (2) Terminal S input The video signals Y and C, input from M1002, are amplified by two times respectively at IC1002 and IC1003.
Page 127 CIRCUIT DESCRIPTION III. Video PWB Circuit Operation 1. Y/C separation (1) Overall configuration The video input signal is input from Pin 1 of the “YC” connector, and led to IC5005, IC5006, Q3060, and Q9009. IC5005 and IC5006 are used for signal changeover among this video signal, a Y/C signal processed by 3-line Y/C separation, another Y/C signal processed by three-dimensional Y/C separation, and one more Y/C signal (input at Pin 3 and Pin 5 of the “YC”...
Page 128 CIRCUIT DESCRIPTION (3) 3-line Y/C separation (for PAL, 4.43 NTSC) The video signal, input in Q5036, is processed for band limitation at FL5003, and its level is corrected at the amplifier (Q5004, Q5005) at the successive stage. The signal from Q5006 is input to IC5007 at 1.5Vp-p. IC5007 performs 3-line Y/C separation, and the Y signal from Pin 25 and the C signal from Pin 23 are output.
Page 129 CIRCUIT DESCRIPTION Signal Y input IC5008 (NTSC/PAL IC5012 (TA8814 IC5017 Pin 15 ; TA1222) ; CTI) (UPD4066 ; SW) SIGMAL Y input Pin 53 DL5001 (DELAY LINE) The C signal is processed for system’s discrimination. If the signal is PAL or NTSC, it is processed for APC, ACC, carrier reproduction, and phase detection.
Page 130 CIRCUIT DESCRIPTION R-Y/B-Y R-Y/B-Y R-Y/B-Y Signal C input IC5009 IC5010 IC5012 IC5008 (TA872; (TA1229; SECAM) (TA8814 ; (NTSC/PAL 1H DELAY) CT1) ; TA1222) Control signal Control signal (3) 1H DELAY circuit operation In the 1H DELAY circuit, amplification only is performed while the PAL/NTSC system is in operation. When the SECAM system is in use, 1H DELAY operation is effected.
Page 131 CIRCUIT DESCRIPTION 3. Sync processing (1) Sync separation processing When the Y signal input is applied to Pin 17 of IC5008, internal sync clamp and sync separation (component SYNC) are performed. The vertical sync signal is used for the discrimination of 50Hz or 60Hz by the count- down system.
Page 132 CIRCUIT DESCRIPTION IV. S I/O PWB and AUDIO PWB 1. S I/O (1) Input interface block Audio signals are input from M4001 ~ M4003 to IC4001 (MM1250XD; AUDIO SW). These signals are con- trolled and selected by the I2C BASS control (SDA, SCL) from the microcomputer. The selected audio signals are level-adjusted (VR4002) at IC4002 (M5223FP: LEVEL ADJ, BUFFER) and then transferred to IC3001 (CXA2022: BASS TREBLE BALANCE control) through the “SI”...
Page 133 CIRCUIT DESCRIPTION V. Power Block Operation 1. Power unit When AC power is obtained from AC inlet, the POWER unit begins to supply Power M +14V from Pin 1 of the “PM” connector for the microcomputer. When POWER signal “H” input is entered from Pin 2 of the “PM” connector, RL1 is turned ON and low-voltage power (D+5V, A+7V, A+14V, S+13V, F+12V) is supplied to each signal circuit.
Page 134 CIRCUIT DESCRIPTION 5. Power for V-I/O PWB The power input of M+14V obtained from Pin 1 of the “PQ” connector is supplied to the PLAG AND PLAY circuit. This power is also regulated to M+5V through the REG IC1009, and supplied to the PLAG AND PLAY circuit, RS-232C driver, and the sync processing circuit.
Page 135: Method Of Disassembly
METHOD OF DISASSEMBLY Diagonal view of the unit front...
Page 136 METHOD OF DISASSEMBLY Diagonal view of the unit rear...
Page 137 METHOD OF DISASSEMBLY Stand Assy (1) Remove the two screws and take out the stand Assy. STAND ASSY 24PS1821 CONNECTOR-BOLT 24N03741...
Page 138 METHOD OF DISASSEMBLY Back panel (1) Remove the 17 screws (marked by a) and the eight screws (marked by b), and the one screw (marked c), and take out the back panel. CBIPS4x12x3KF 24N03711 17 pcs. (Marked by a) PC-CPIMS3x8x15KF 910E3053 8 pcs.
Page 139 METHOD OF DISASSEMBLY Terminal panels (S)(V)/R,L-TERM PWB/S-I/O PWB/VIDEO I/O PWB (1) Remove the four screws from the right and (2) Pull out the S-I/O PWB and the VIDEO I/O PWB the left respectively, and take out the terminal pan- from the terminal panel. els (S) and (V).
Page 140 METHOD OF DISASSEMBLY AUDIO PWB/VIDEO PWB (1) Remove the four screws from the right and the left respectively, and take out AUDIO PWB and VIDEO PWB. AUDIO PWB 933T7MA1 PC-CPIMS3x8x15KF 910E3053 (4 pcs.) VIDEO PWB PC-CPIMS3x8x15KF SHIELD CASE (AUD) 933T7VA1 910E3053 (4 pcs.) 74306331 SHIELD CASE (VID)
Page 141 METHOD OF DISASSEMBLY Power unit (1) Remove the six screws and take out the power unit. POWER UNIT 79645461 PL-CPIMSx4x8x15BF 910E4011 (6 pcs.)
Page 142 METHOD OF DISASSEMBLY Bracket (fan)/DC fan (1) Remove the seven screws (marked by a), the (2) Remove the 16 screws and take out the DC two screws (marked by b), and the one screw fan from the bracket (fan). , and take out the bracket (fan). (3) Remove the four screws 5 and take out the grand bosrds L and R.
Page 143 METHOD OF DISASSEMBLY Shield case (ANA)A/ANALOG PWB (1) Remove the ten screws and take out the shield (2) Remove the four screws and take out the ANA- case (ANA) A. LOG PWB. ANALOG PWB 933T7A01 PL-CPIMSx2x4x15BF 18858491 (10 pcs.) PL-CPIMSx3x8x15KF 910E3053 (4 pcs.) SHIELD CASE (ANA) A 74306241...
Page 144 METHOD OF DISASSEMBLY 10. Shield Plates (R)(L) (1) Remove the 18 screws (marked by a), the six screws (marked by b), the four screws (marked by c), and the ten screws (marked by d), and take out the shield plates (R) and (L). PL-CPIMSx3x8x15KF 910E3053 (4 pcs.) (Marked by c)
Page 145 METHOD OF DISASSEMBLY 11. Shield plate (CE) (1) Remove the four screws and take out the shield plate (CE). SHIELD PLATE (CE) 24H29251 CBIPSx3x8x3KF 24N03691 (4 pcs.) 7-11...
Page 146 METHOD OF DISASSEMBLY 12. Bracket (PS) R,L/CTL PWB/POWER PWB/VOL PWB (1) Remove the eight screws (marked by a) and take out the brackets (PS) R,L. (2) Remove the three screws (marked by b) and take out the CTL PWB, POWER PWB, and VOL PWB.
Page 147 METHOD OF DISASSEMBLY 13. PDP module (2) Take out the filter from the cabinet ASSY. (1) Remove the four screws and take out the PDP (Remove the electrical tape.) module. FILTER 24K23941 ELECTRICAL TAPE CABINET ASSY 92203970 24DT6761 PL-CPIMSx4x14x3KF 910E4046 (4 pcs.) PDP-NP4201MF02 33342003 BRACKET (MDL)
Page 148 MEMO...
Page 149: Disassembly
DISASSEMBLY PL-CPIMS3x20x15BF 910E3111 (16 pcs. ) DC FAN FBA08TL12LSE 31710052 CBIPS4x12x3KF 24N03711 CBIPS4x12x3KF 17 pcs. (Marked by a) 24N03711 (7 pcs. ) (Marked by a) BACK PANEL 24P01601 (PX-42M2A) 24P01771 (PX-42M2G) PC-CPIMS3x8x15KF 910E3053 DC FAN FBA08TL12LSD 31710053 CBIPS3x8x3KF 24N03691 PC-CPIMS3x8x15KF 910E3053 8 pcs.
Page 150 DISASSEMBLY AUDIO PWB 933T7MA1 PC-CPIMS3x8x15KF 910E3053 VIDEO PWB 933T7VA1 SHIELD CASE (AUD) 74306331 PC-CPIMS3x8x15KF 910E3053 SHIELD CASE (AUD) L TERM PWB 74306271 933T7MD1 VIDEO I/O PWB 933T7VB1 CBIPS3x8x3KF 24N03691 TERMINAL PANEL (V) 24P01781 SHIELD PLATE (CE) 24H29251 TERMINAL BRACKET 24P01801 PL-CPIMSx3x8x15KF 910E3053 PL-CPIMS3x8x15KF...
Page 151 DISASSEMBLY SUPPORT POST (WSK-314) CBIPSx3x8x3KF 24C03851 ELECTRICAL TAPE 24N03691 92203970 (2 pcs.) (Marked by b) PL-CPIMSx4x14x3KF 910E4046 CABINET ASSY PL-CPIMSx4x14x3KF 24DT6761 910E4046 PL-CPIMSx3x8x15KF 910E3053 FLAT CABLE 80P-L80 73499359 BRACKET (PS) R 24F28831 SHIELD PLATE (R) PL-CPIMSx4x14x3KF 24H29242 910E4046 POWER PWB POWER UNIT 933T7MG1 CTL PWB...
Page 152 MEMO...
Page 153: Method Of Wiring
METHOD OF WIRING Ferrite mounting and wiring Ferrite core ZCAT2032-930 61605059 Ferrite core (ESD-R-19) 61605166...
Page 154: Packaging
PACKAGING 1. Packing details A) Protective sheet Lay the protective sheet underneath the set and wrap it. Fix the protective sheet at five portions. Use the tape #202M30mm * 18m : 92203110 or a paper adhesive tape 30mm * 18m 10-1...
Page 155 PACKAGING B) SAFETY BRACKET SASSY C) CAP SASSY D) SERVICE BAG SASSY 10-2...
Page 156 PACKAGING E) CUSHION (T) F) CUSHION (TC) The tape to be used shall be #202M30mm * 18m: 92203110 or a paper adhesive tape 30mm * 18m: 92203227 10-3...
Page 157 PACKAGING G) CUSHION, CARTON BOX 10-4...
Page 158 PACKAGING H) Joints and P.P band Insert and lock the joints (24CS0551) in 4 positions. Hook the P.P band (92203857) at about 2 cm from the inside of each joint, and fasten it a stopper (P.P band) (24282431). 1.Insert a joint in the corrugated 2.
Page 159 PACKAGING Outer box 10-6...
Page 160 PACKAGING I) Label Necessary items shall be printed on the bar code serial label (16761791) , which is then stuck to the right side of the corrugated cardboard box T. Apply a P.P band (92203857) and fasten it with a stopper (P.P band) (24282431). 10-7...
Page 161: Replacement Part List
REPLACEMENT PART LIST Notes: 1. Parts orders must contain model name, parts number and 3. Standard resistors, capacitors and coils which are nor- description. mally available from local electronics suppliers are not 2. When you place an order for spare parts, please refer to stocked in our warehouse.
Page 162 2. PX42M2G...
Page 163: Connection Diagrams
CONNECTION DIAGRAMS 12-1...
Page 164: Block Diagram
BLOCK DIAGRAMS ANALOG 13-1...
Page 165 BLOCK DIAGRAMS VIDEO AUDIO 13-2...
Page 166 BLOCK DIAGRAMS POWER UNIT 13-3...
Page 167: Schematic Diagrams
SCHEMATIC DIAGRAMS I/O PWB (PWC-4213B) 14-1...
Page 168 SCHEMATIC DIAGRAMS I/O PWB (PWC-4213B) PARTS SIDE SOLDER SIDE 14-2...
Page 169: Analog Pwb (Pwc-4214) (1/10
SCHEMATIC DIAGRAMS ANALOG PWB (PWC-4214) (1/10) 14-3...
Page 170 SCHEMATIC DIAGRAMS ANALOG PWB (PWC-4214) (2/10) 14-4...
Page 171 SCHEMATIC DIAGRAMS ANALOG PWB (PWC-4214) (3/10) 14-5...
Page 172 SCHEMATIC DIAGRAMS ANALOG PWB (PWC-4214) (4/10) 14-6...
Page 173 SCHEMATIC DIAGRAMS ANALOG PWB (PWC-4214) (5/10) 14-7...
Page 174 SCHEMATIC DIAGRAMS ANALOG PWB (PWC-4214) (6/10) 14-8...
Page 175 SCHEMATIC DIAGRAMS ANALOG PWB (PWC-4214) (7/10) 14-9...
Page 176 SCHEMATIC DIAGRAMS ANALOG PWB (PWC-4214) (8/10) 14-10...
Page 177 SCHEMATIC DIAGRAMS ANALOG PWB (PWC-4214) (9/10) 14-11...
Page 178 SCHEMATIC DIAGRAMS ANALOG PWB (PWC-4214) (10/10) 14-12...
Page 179 SCHEMATIC DIAGRAMS ANALOG PWB (PWC-4214) PARTS SIDE 14-13...
Page 180 SCHEMATIC DIAGRAMS ANALOG PWB (PWC-4214) SOLDER SIDE 14-14...
Page 181: Video Pwb (Pwc-4213A) (1/3
SCHEMATIC DIAGRAMS VIDEO PWB (PWC-4213A) (1/3) 14-15...
Page 182 SCHEMATIC DIAGRAMS VIDEO PWB (PWC-4213A) (2/3) 14-16...
Page 183 SCHEMATIC DIAGRAMS VIDEO PWB (PWC-4213A) (3/3) 14-17...
Page 184 SCHEMATIC DIAGRAMS VIDEO PWB (PWC-4213A) PART SIDE 14-18...
Page 185 SCHEMATIC DIAGRAMS VIDEO PWB (PWC-4213A) SOLDER SIDE 14-19...
Page 186: Audio Pwb (Pwc-4216A)
SCHEMATIC DIAGRAMS AUDIO PWB (PWC-4216A) 14-20...
Page 187 SCHEMATIC DIAGRAMS AUDIO PWB (PWC-4216A) PARTS SIDE 14-21...
Page 188 SCHEMATIC DIAGRAMS AUDIO PWB (PWC-4216A) SOLDER SIDE 14-22...
Page 189: Sound Pwb (Pwc-4216B)
SCHEMATIC DIAGRAMS SOUND I/O PWB (PWC-4216B) 14-23...
Page 190 SCHEMATIC DIAGRAMS SOUND I/O PWB (PWC-4216B) PART SIDE SOLDER SIDE 14-24...
Page 191: Power Pwb (Pwc-4216G)
SCHEMATIC DIAGRAMS POWER PWB (PWC-4216G) POWER PWB (PWC-4216G) PARTS SIDE SOLDER SIDE 14-25...
Page 192: Ctl Pwb (Pwc-4216F)
SCHEMATIC DIAGRAMS CTL PWB (PWC-4216F) CTL PWB (PWC-4216F) PARTS SIDE SOLDER SIDE 14-26...
Page 193: Vol Pwb (Pwc-4216C)
SCHEMATIC DIAGRAMS VOL PWB (PWC-4216C) VOL PWB (PWC-4216C) PARTS SIDE SOLDER SIDE 14-27...
Page 194: R Terminal Pwb (Pwc-4216E)
SCHEMATIC DIAGRAMS R TERMINAL PWB (PWC-4216E) R TERMINAL PWB (PWC-4216E) PARTS SIDE SOLDER SIDE 14-28...
Page 195: L Terminal Pwb (Pwc-4216D)
SCHEMATIC DIAGRAMS L TERMINAL PWB (PWC-4216D) L TERMINAL PWB (PWC-4216D) PARTS SIDE SOLDER SIDE 14-29...
Page 196 MEMO...
Page 197 PRINTED IN JAPAN 9806MI1250 01272002 (PX-42M2A) 01272003 (PX-42M2G)

This manual is also suitable for:

Plasmasync px-42m2g

NEC PlasmaSync PX-42M2A Service Manual

Quick Links

Related Manuals for NEC PlasmaSync PX-42M2A

Summary of Contents for NEC PlasmaSync PX-42M2A

This manual is also suitable for:

Table of Contents