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PDP-502MX
PDP-502MXE
THIS MANUAL IS APPLICABLE TO THE FOLLOWING MODEL(S) AND TYPE(S).
Model
Type
PDP-502MX
LUCBW/1
YVLDK/1
--
ΒΆ This service manual should be used together with the following manual(s).
Model No.
PDP-502MX
In PDP-502MX and PDP-502MXE, there are two different models (original model and
value analysis model) respectively. Confirm the mark and serial No. of the product Rear
side, and use each service manual. Refer to "Confirm it".
CONTENTS
......................................................... 2
1. SAFETY INFORMATION .................................... 3
....................................................... 18
(For SCHEMATIC DIAGRAM, refer to ARP3078)
4. PCB DIAGRAM ....................... Refer to ARP3078
5. PCB PARTS LIST ................... Refer to ARP3078
6. ADJUSTMENT .................................................. 46
PIONEER CORPORATION
PIONEER ELECTRONICS SERVICE, INC. P.O. Box 1760, Long Beach, CA 90801-1760, U.S.A.
PIONEER EUROPE NV Haven 1087, Keetberglaan 1, 9120 Melsele, Belgium
PIONEER ELECTRONICS ASIACENTRE PTE. LTD. 253 Alexandra Road, #04-01, Singapore 159936
PIONEER CORPORATION 2000
PDP-502MXE
--
AC100 - 120V
AC100 - 240V
Order No.
ARP3078
4-1, Meguro 1-chome, Meguro-ku, Tokyo 153-8654, Japan
Power Requirement
SCHEMATIC DIAGRAM, PCB DIAGRAM, PCB PARTS LIST and
IC INFORMATION
7. GENERAL INFORMATION .............................. 60
7.1 DIAGNOSIS ................................................ 60
7.1.1 DIAGNOSIS METHOD ...................... 60
7.1.2 DISASSEMBLY ................................. 70
7.1.3 WIRING ............................................. 72
7.2 IC
............................. Refer to ARP3078
....................................................... 76
ORDER NO.
ARP3075
Remarks
Remarks
T-ZZA AUG. 2000 Printed in Japan

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   Summary of Contents for Pioneer PDP-502MX

  • Page 1: Table Of Contents

    PDP-502MX ARP3078 IC INFORMATION In PDP-502MX and PDP-502MXE, there are two different models (original model and value analysis model) respectively. Confirm the mark and serial No. of the product Rear side, and use each service manual. Refer to "Confirm it".
  • Page 2: Confirm It

    PDP-502MX, PDP-502MXE Confirm it Confirm it PRODUCT REAR SIDE Discrimination seal (SILVER) Serial No. ∗ ∗ ∗ ∗ ∗ SERIAL NO. Serial No. Service Manual ARP3075 [This manual] 1 ∗ ∗ ∗ ∗ ∗ ARP3078 ARP3037 OTHER ARP3044...
  • Page 3: Safety Information

    PDP-502MX, PDP-502MXE 1. SAFETY INFORMATION This service manual is intended for qualified service technicians; it is not meant for the casual do-it-yourselfer. Qualified technicians have the necessary test equipment and tools, and have been trained to properly and safely repair complex products such as those covered by this manual.
  • Page 4: Product Safety Notice

    1.2 PRODUCT SAFETY NOTICE Plug the AC line cord directly into an AC power source (do not use Many electrical and mechanical parts in PIONEER set have special an isolation transformer for this check). safety related characteristics. These are often not evident from Turn the AC power switch on.
  • Page 5 PDP-502MX, PDP-502MXE 1.3 CHARGED SECTION AND HIGH VOLTAGE GENERATING POINT 7 Charged Section 7 High Voltage Generating Point The places where the commercial AC power is used without The places where voltage is 100V or more except for the charged passing through the power supply transformer.
  • Page 6: Exploded Views And Parts List

    PDP-502MX, PDP-502MXE 2. EXPLODED VIEWS AND PARTS LIST NOTES : Parts marked by “ NSP ” are generally unavailable because they are not in our Master Spare Parts List. mark found on some component parts indicates the importance of the safety factor of the part.
  • Page 7 See contrast table (2) Upper Pad L AHA2242 Upper Pad C AHA2243 Under Pad C AHA2245 (2) CONTRAST TABLE PDP-502MX/LUCBW/1 and PDP-502MXE/YVLDK/1 are constructed the same except for the following: Part No. Symbol and Description Mark Remarks PDP-502MX PDP-502MXE LUCBW/1...
  • Page 8 PDP-502MX, PDP-502MXE 2.2 REAR CASE SECTION 27 (MXE) 27 (MX) PDP-502MXE Only PDP-502MX Only PDP-502MX Only 19 (MX) 30 (MXE) PDP-502MX Only PDP-502MXE Only PDP-502MX Only Refer to "2.3 EXTERIOR (1/3)".
  • Page 9 Barrier Caution Label AAX2759 Name Label See contrast table (2) Earth Plate ANK1639 (MXE only) …………………………… (2) CONTRAST TABLE PDP-502MX/LUCBW/1 and PDP-502MXE/YVLDK/1 are constructed the same except for the following: Part No. Symbol and Description Mark Remarks PDP-502MX PDP-502MXE LUCBW/1...
  • Page 10 PDP-502MX, PDP-502MXE 2.3 EXTERIOR (1/3) Refer to "2.4 EXTERIOR (2/3)". PDP-502MX Only Refer to "2.6 FRONT CASE SECTION".
  • Page 11 Nylon Rivet AEC1671 …………………………… …………………………… PCB Mold AMR2115 …………………………… …………………………… Screw ABZ30P160FCU (2) CONTRAST TABLE PDP-502MX/LUCBW/1 and PDP-502MXE/YVLDK/1 are constructed the same except for the following: Part No. Mark Symbol and Description Remarks PDP-502MX PDP-502MXE LUCBW/1 YVLDK/1 VIDEO ASSY AWZ6495...
  • Page 12 PDP-502MX, PDP-502MXE 2.4 EXTERIOR (2/3) Refer to "2.5 EXTERIOR (3/3)".
  • Page 13 AEB1341 …………………………… IR RECEIVE ASSY AWZ6498 Power Switch (S1) BSM1006 CONTROL ASSY AWZ6504 (2) CONTRAST TABLE PDP-502MX/LUCBW/1 and PDP-502MXE/YVLDK/1 are constructed the same except for the following: Part No. Mark Symbol and Description Remarks PDP-502MX PDP-502MXE LUCBW/1 YVLDK/1 AC Inlet with Filter (CN1)
  • Page 14 PDP-502MX, PDP-502MXE 2.5 EXTERIOR (3/3) Note*: No.47 is a special screw. Please fix to an original place. Please never use other screws. ∗ ∗ ∗ ∗ ∗ ∗ (× 40)
  • Page 15 AEC1857 …………………………… …………………………… …………………………… Circuit Board Spacer AEC1744 …………………………… Locking Spacer AEC1796 (2) CONTRAST TABLE PDP-502MX/LUCBW/1 and PDP-502MXE/YVLDK/1 are constructed the same except for the following: Part No. Mark Symbol and Description Remarks PDP-502MX PDP-502MXE LUCBW/1 YVLDK/1 UCOM ASSY AWZ6499...
  • Page 16 PDP-502MX, PDP-502MXE 2.6 FRONT CASE SECTION PDP-502MX Only (1) FRONT CASE SECTION PARTS LIST Mark No. Description Part No. Mark No. Description Part No. SIDE SW ASSY AWZ6500 Front Cushion V AED1192 LED Lens AAK2695 Corner Cushion AEB1360 Control Name Plate...
  • Page 17 PDP-502MX, PDP-502MXE (2) CONTRAST TABLE PDP-502MX/LUCBW/1 and PDP-502MXE/YVLDK/1 are constructed the same except for the following: Part No. Mark Symbol and Description Remarks PDP-502MX PDP-502MXE LUCBW/1 YVLDK/1 Front Case AMB2649 AMB2679 Pioneer Seal ARW1091 Not used 2.7 PDP SERVICE ASSY (AWU1030) PDP SERVICE ASSY (AWU1030) is composed of the following parts.
  • Page 18: Block Diagram And Schematic Diagram

    PDP-502MX, PDP-502MXE 3. BLOCK DIAGRAM AND SCHEMATIC DIAGRAM For "SCHEMATIC DIAGRAM", refer to the service manual ARP3078 for PDP-502MX. 3.1 OVERALL BLOCK DIAGRAM CABLE ASSY CABLE ASSY CABLE ASSY MAIN POWER ASSY VSUS VADR SW PWR SW PWR SW PWR...
  • Page 19 PDP-502MX, PDP-502MXE Notes: When ordering service parts, be sure to refer to "EXPLODED VIEWS AND PARTS LIST" or "PCB PARTS LIST". For "PCB PARTS LIST", refer to the service manual ARP3078 for PDP-502MX. VADR VADR SCAN (A) ASSY CABLE ASSY...
  • Page 20 PDP-502MX, PDP-502MXE 3.2 VIDEO ASSY SECTION (1/2) PDP-502MX Only PDP-502MXE Only To VIDEO Assy (2/2) CN503 CN304 To CONTROL ASSY CN4703 IC651 CN302 9V_SIG 5V_PIC 5V_PIC Y/B–Y/R–Y DECODER SYNC SEPA. TV JUNGLE IC B–Y FNC_1 IC1201 R–Y (TB1227BW) IC1205 IC102...
  • Page 21 PDP-502MX, PDP-502MXE Screen K2904 K2903 K2901 AD OUT IP Process (VD) (HD) (CLK) NTSC 15.734k 40.28M Single (A) +5V_PLL +3.3AD Wide 15.625k 53.63M Single (A) +5AD 5V_PIC CN2901 48.36k 32.50M Dual (A/B) Through XGA (60) R (B) G (B) B (B)
  • Page 22 PDP-502MX, PDP-502MXE 3.3 VIDEO ASSY SECTION (2/2)
  • Page 23 PDP-502MX, PDP-502MXE Waveforms of VIDEO ASSY Synchronous Signal Processing Block Synchronous Signal Processing Block Synchronous Signal Processing Block 2 (When INPUT1 NTSC RAMP signal is input) (When INPUT1 NTSC RAMP signal is input) (INPUT4 PC siganl VESA: 1280x1024@60Hz (SXGA@60Hz) CH1: VIDEO input...
  • Page 24 PDP-502MX, PDP-502MXE Synchronous Signal Processing Block 2 (INPUT4 PC siganl VESA: YC_VY R output 1280x1024@60Hz (SXGA@60Hz) (INPUT1 NTSC Color Bar) (INPUT3, 4 NTSC Color Bar Y/Cb/Cr) when there is signal input [ separate H, V ] CN104 Pin1 IC306 V : 20mV/div H : 20msec/div...
  • Page 25 PDP-502MX, PDP-502MXE R input INT_Y input (INPUT1 NTSC Color Bar) (INPUT1 NTSC Color Bar) IC1701 IC1401 V : 50mV/div H : 20msec/div V : 20mV/div H : 20msec/div INT_Cb input G input (INPUT1 NTSC Color Bar) (INPUT1 NTSC Color Bar)
  • Page 26 PDP-502MX, PDP-502MXE 3.4 SYNC SIGNAL PROCESSING BLOCK SYNC CONTROL PLD Noise cancel processing IC2005(PDY069) Countermeasure for copy guard Limit to U-com processing velocity (Max: 200kHz) Noise IC2004(2/2) HD_MASK Mask TC74VHC123 Gate Control signal for switching MASK_DSW mask width (Lo : In PC input)
  • Page 27 PDP-502MX, PDP-502MXE PLL output HD for A/D sampling & clock SYNC reference K2432 DIVOUT K2029 HD_PLL AMP/AD/PLL IC PLL input HD IC2701 (CXA3106Q) HOLD controlling signal for comparing PLL phase comparison. K2030 HOLD_PLL 1_2CLK HOLD signal generation circuit for PLL control...
  • Page 28 PDP-502MX, PDP-502MXE 3.5 DIGITAL VIDEO ASSY SECTION +3.3V +3.3V (IC#101) CN3403 Y (8bit) R (B) IC1901 Pb (8bit) IC1951 (PE5066A) WRITE CLK (SYSTEM CLK) Pr (8bit) IP PROCESSOR (UPD4811650GF-A10) G (B) 16M SGRAM B (B) X Speed +3.3V Process X dencity...
  • Page 29 PDP-502MX, PDP-502MXE VACANT +3.3V +3.3V (IC#22) To Panel U-com DATA IC2602 TEM CLK) ARRANGE (HY58163210TQ-10) 16M SGRAM DATA CONVERT X3201 +3.3V 62MHz CONT IC2603 (HY58163210TQ-10) IC2601 16M SGRAM (PE5063A) 16bit × 2 SUB FIELD (IC#21) CONVERSION VLD_A VLD_B FIELD ASK CONT +3.3V...
  • Page 30 PDP-502MX, PDP-502MXE Waveforms of X DIGITAL VIDEO ASSY Blanking waveform for analog use I-P H synchronous waveform H synchronous waveform CH1: TP3410 (HDIP) CH1: TP3410 (HD_IP) TP2155 V : 1V/div H : 2msec/div CH2: TP3405 (CLP1) CH2: IC1801 Pin 168 (Hi) –– IC1901 Pin 57 CH3: TP3406 (CLP2) CH3: IC1901 Pin 55 (Hp) ––...
  • Page 31 PDP-502MX, PDP-502MXE Address resonant output waveform IC1801 HD input waveform IC1901 clock input waveform IC2910 Pin 13 CN3404 Pin 29 (HD_IP), TP3410 CN3404 Pin 26 (CLK_101), TP3413 V : 1V/div H : 2msec/div V : 1V/div H : 10msec/div V : 1V/div H : 20nsec/div...
  • Page 32 PDP-502MX, PDP-502MXE Address control signal IC3304 Pin 11 (LBLK) V : 1V/div H : 2msec/div Address control signal IC3308 Pin 15 (CLKDUI) V : 1V/div H : 0.1msec/div Address control signal CN3275 Pin 26 (LEDUI) V : 1V/div H : 0.5msec/div...
  • Page 33 PDP-502MX, PDP-502MXE 3.6 X DRIVE ASSY SECTION...
  • Page 34 PDP-502MX, PDP-502MXE 3.7 Y DRIVE ASSY SECTION IC5V IC3607 HBLK1 TP3600 IC3602 TP3604 SCAN BLOCK IC3611 TP3602 IC5V PSUS IC3600 (TC74VHC541FT) R3602 IC3610 IC3604 SI DATA TP3605 R3603 TP3602 IC3609 CN3605 HBLK2 TP3606 HBLK1 IC3605 IC3606 (TC74VHC541FT) IC3613 IC3601 R3614...
  • Page 35 PDP-502MX, PDP-502MXE SUSTAIN BLOCK PDP Pulse Module IC3702 (STK795-450) VSUS (175V) K3703 VDD1 SUS-OUT VSUS 175V SUS-B SUSOUT SUS-U VDD2 SUS-D VSUS/2 SUS-G SUSGND VSS2 +5V For Logic Block PDP Pulse Module IC3609 (STK795-450) VSUS (175V) VDD1 VSUS SUS-B 175V...
  • Page 36 PDP-502MX, PDP-502MXE Waveforms of X DRIVE Assy, Y DRIVE Assy and SCAN MODULE Sustained waveform Sustained waveform (1st sub-field) Sustained waveform (portion where sustaining was ended; enlarged) CH1: P.SUS TP3716 (P.SUS) – TP3713 (SUS.GND) CH1: X drive waveform CH1: X drive waveform V: 50V/div., H: 500nsec/div.
  • Page 37 PDP-502MX, PDP-502MXE Sustained waveforms SCAN IC Y-drive sustained waveforms control waveform (1 sub-field) (for 1 field) (selected pulse portions of waveforms; 1 sub-field) CH1: Y drive waveform TP3716 (P.SUS) – TP3713 (SUS.GND) CH1: SCAN output waveform CH1: Y drive waveform V: 50V/div., H: 200µsec/div.
  • Page 38 PDP-502MX, PDP-502MXE 3.8 UCOM ASSY SECTION M.R. (C.B.) PM_ST PROM CONNECTION 24LC01B DETECT CIRCUIT ∗GRN ∗RED ∗YLW Jungle IC DRIVE/CONTROL TB1227BN CIRCUIT MATRIX IC ∗KEY KEY (MONITOR) KEY SCAN uCOM. CXA2101 PD5136 MR_KEY (SYSTEM) MR_KEY MEDIA CCD/TELTEXT RECEIVER REM_MP TPU3050...
  • Page 39 PDP-502MX, PDP-502MXE Waveforms of U-COM ASSY IC3602-pin4 IC3604-pin7 (CLK2) IC3604-pin28 (Clock input: X3602) V :2V/div H : 50msec/div (Clock input: X3601) V : 1V/div H : 1msec/div IC3604-pin7 (CLK2)(enlarged) V :2V/div H : 50nsec/div V :2V/div H : 20msec/div IC3604-pin8 (DATA2)
  • Page 40 PDP-502MX, PDP-502MXE Pin Function PDP- PDP- PDP- Name Function Operation of Terminals (during power on) 502MX 502MXE 505HD S2_DET S2 Signal detection 0–1.3V: Normal, 1.4–2.4V: Letter Box, 2.5–5V: Squeeze –– OPTION Option Video Box detection High: non existence, Low: existence of Video Box ––...
  • Page 41 PDP-502MX, PDP-502MXE PDP- PDP- PDP- Name Function Operation of Terminals (during power on) 502MX 502MXE 505HD *YLW Yellow LED lighting Low: In lighting Yellow LED I_DET Not used IP_BUSY BUSY signal from IP u-com High: At the timing of VD SYNC...
  • Page 42 PDP-502MX, PDP-502MXE 3.9 MAIN POWER ASSY SECTION In rush R D131 TP131 POWER FACTOR CONTROL R133 +B (380V) R134 L133 AEK1071 R168 RY101 D132 FU101 Q201 SW Tr (2SK2847) R140 +B Adj R166 VR131 D190 RCC CONT IC131 Q131 Q136...
  • Page 43 PDP-502MX, PDP-502MXE TP201 VSUS Discharging R VSUS D213 D212 R228 R227 R226 R262 R263 R264 T202 (170V) ATK1128 170V D202 Q202 VSUS+10V Q201 SW Tr (2SK2847) Q415 IC403 VSUS TRANS T201 IC405 ATK1128 One Shot VR201 IC204 Q416 VSUS VADR...
  • Page 44 PDP-502MX, PDP-502MXE 3.10 FAN CONTROL SECTION...
  • Page 45 PDP-502MX, PDP-502MXE...
  • Page 46: Adjustment

    PDP-502MX, PDP-502MXE 6. ADJUSTMENT SERVICE FACTORY MODE Perform the operations of Service factory mode using the remote control unit provided with thePDP-501HD (CU-PD001: AXD1432) or the remote control unit provided with the PDP-502HD (CU-PDP009: AXD1673). Entering Service Factory Mode POWER...
  • Page 47: Service Mode

    PDP-502MX, PDP-502MXE SERVICE MODE Version of the system micro computer P D 5 5 3 1 – 0 1 (502MX) P D 5 5 4 9 ! 0 4 (502MXE) Signal mode discrimination of current input signal N: NTSC P D 5 5 3 1 – 0 1 M O D E 0 6 –...
  • Page 48 PDP-502MX, PDP-502MXE Vertical Holizontal Signal Mode Input Signal Panel Display Frequency Frequency Remarks Dot ∗ Line Dot ∗ Line VIDEO Fv (Hz) Fh (Hz) 1280 ∗ 768 60.0 33.8K Hi-Vision INTERLACE (1035 i ) –– 08-7 FULL (HD) 08-7+: Y color-difference HDTV16:9 (1920 ∗...
  • Page 49 PDP-502MX, PDP-502MXE Vertical Holizontal Signal Mode Input Signal Panel Display Frequency Remarks Frequency Dot ∗ Line Dot ∗ Line VIDEO Fh (Hz) Fv (Hz) 1024 ∗ 768 (XGA) 1024 ∗ 768 75.0 60.0K 1F-1 –– ORIGINAL (VESA: 60.023k/75.029) 1280 ∗ 768 (74.9)
  • Page 50: Picutre Mode

    PDP-502MX, PDP-502MXE Items to adjust and set value in Each Adjustment mode PICUTRE mode Current menu Input signal PICTURE mode has three menus, "REFERENCE 1", "REFERENCE 2" and "VIDEO BOX". R E F E R E N C E 1 M O D E 0 6 –...
  • Page 51 PDP-502MX, PDP-502MXE INITIALIZE mode (Common for all input signal types and formats) Remote Adjustment Setting Input Signal Current Menu Adjusting & Setting Item Control Key Parameter Value I N I T I A L I S E M O D E 0 6 – A / N SUB VIDEO Go to SUB VIDEO adjustment menu with "SET"...
  • Page 52 PDP-502MX, PDP-502MXE Details of FINAL SETUP ( Factory default setting) Item Default Setting Remarks Power(STAND-BY/ON) STANDBY Input function INPUT1 (502MX), INPUT3 (502MXE) Displaying size NATURAL WIDE (On video signal input) For each input function (PC 1) ORIGINAL (including TYPE) (On PC signal input) For INPUT 3, 4 ∩ each signal mode...
  • Page 53 ASSY and replace it with the one on the new ASSY. Caution: Setting of SW, S111 at MAIN POWER ASSY PDP-502MXE Only: Set the SW, S111 to AC220V side. Otherwise the power will shutdown. PDP-502MX/505HD: Set the SW, S111 to AC100V side. Drive Voltage Label Position of Drive Voltage Label...
  • Page 54: Adjusting Method

    PDP-502MX, PDP-502MXE Adjusting Method Procedure Adjusting Item Input signal Adjusting Point Adjusting Method REFERENCE 2 R-Y LEVEL adjustment in Factory mode Observe R-Y color-difference waveform at Pin 3 (INT_Cr) of IC1401 R–Y LEVEL ….…. (MATRIX IC) in VIDEO Assy. Adjust R-Y LEVEL so that the point indicated in the right figure becomes "260mV±15mV".
  • Page 55 PDP-502MX, PDP-502MXE Procedure Adjusting Item Input signal Adjusting Point Adjusting Method VSUS (Sustain voltage) adjustment Adjust so that the voltage between TP201(VSUS) and TP202 (SUS GND) becomes ±1V of the voltage indicated at the "voltage indication VR201 (VSUS) label". MAIN POWER ASSY...
  • Page 56 PDP-502MX, PDP-502MXE Procedure Adjusting Item Input signal Adjusting Point Adjusting Method VOFS (Offset voltage) adjustment Adjust so that the voltage between TP705 (VOFS) and TP703 (SUS GND) becomes ± 0.5V" of the voltage indicated at the "voltage VR700 (VOFS) indication label".
  • Page 57 PDP-502MX, PDP-502MXE Procedure Adjusting Item Input signal Adjusting Point Adjusting Method REFERENCE 1 Preparation Set CONTRAST to "128" and BRIGHT to "128". in Factory mode setting CONTRAST.."1" Key BRIGHT .….."2" Key 1) RAMP signal LOW LIGHT adjustment REFERENCE 1 1) Observe the signals at TP terminals R: K2423, G: K2424, B: K2425, in Factory mode of VIDEO ASSY.
  • Page 58 PDP-502MX, PDP-502MXE Procedure Adjusting Item Input signal Adjusting Point Adjusting Method SUB VIDEO mode Set to the indicated value with the keys on the remote control unit. in Factory mode (refer to SUB VIDEO mode) Any input Base Pulse PULSE NUMBER number .."8"...
  • Page 59 PDP-502MX, PDP-502MXE Adjusting points and Measuring points...
  • Page 60: General Information

    PDP-502MX, PDP-502MXE 7. GENERAL INFORMATION 7.1 DIAGNOSIS D441 D443 D439 7.1.1 DIAGNOSIS METHOD D437 D407 This PDP has several protection circuits, and the operation of the circuits activate power down circuit and set the unit automatically to standby mode in order to protect the circuit.
  • Page 61 PDP-502MX, PDP-502MXE The state of Lighting P.D. circuit Diagnosis Failure points Estimated failure parts circuit in operation D408 Anode is VADR UVP When CN205 is disconnected, MAIN POWER Assy IC301 • 302 • Q302 D407 High/ High P.D. occurs, and even when between base &...
  • Page 62 PDP-502MX, PDP-502MXE The state of Lighting P.D. circuit Diagnosis Failure points Estimated failure parts circuit in operation K751Hi VH UVP Drive section (drive control signals Y DRIVE Assy IC751 • 752 • 755 D407 & drive signal output elements) in •...
  • Page 63 PDP-502MX, PDP-502MXE Diagnosis when under voltage is detected at V SUS / V ADR voltage lines. Disconnect connector CN205 P5 at Main Power Assy and turn on the power. If the power is turned on and D205 at Main Power Assy lights up in yellow, cause of the under voltage is not inside Main Power Assy.
  • Page 64 PDP-502MX, PDP-502MXE Note for repairing in case of blown fuses Never turn on the power of the unit again just by replacing the fuse, when the fuse is blown. Because, it is rare case that the fuse itself is defective. If the power is turned on again without resolving the cause of over current, the unit is damaged more.
  • Page 65 PDP-502MX, PDP-502MXE MAIN POWER ASSY CN205 D205 CN353 Q415 D305 CN354 Q426 Q417 Q416 Q420 Q418 CN306 Q419 Q421 S111 D355 S301 CN355 Q435 D408 D405 D448 Q111 Fuse (FU101) D407 D443 D441 D439 D437 DIGITAL VIDEO ASSY D2306 D2302...
  • Page 66 PDP-502MX, PDP-502MXE Protection Circuits MAIN POWER ASSY +B OVP AC200V P.D. +14V VF OVP +8V UVP +12V UVP –8V UVP +14V X DRIVE ASSY +12V OCP R3438 R3437 R3439 5.6k 5.6k C3424 Q3405 Q3406 D3408 VADR UVP VADR VSUS UVP...
  • Page 67 PDP-502MX, PDP-502MXE Y DRIVE ASSY Y DC/DC BLOCK Y DRIVE BLOCK IC5V OVP 12V OCP VOFS OVP VOFS UVP VH OVP VH UVP VRN OVP VRN UVP DIGITAL VIDEO ASSY CABLE ASSY...
  • Page 68: Service Position

    PDP-502MX, PDP-502MXE Service Position 1. MAIN POWER ASSY Remove the harness from Wire Saddle Remove two screws Remove two screws MAIN POWER ASSY VIDEO ASSY Loosen two screws MAIN POWER ASSY MAIN POWER ASSY Stand Main Power Assy...
  • Page 69 PDP-502MX, PDP-502MXE 2. VIDEO ASSY Note) Shield Case of Video Assy should not touch the heat sink at the primary side of Main Power Assy in standing Video Assy. (Noise may be generated and that may break the Main Power Assy)
  • Page 70: Disassembly

    PDP-502MX, PDP-502MXE ∗ 7.1.2 DISASSEMBLY Screw Collar (AEC1848) The screw collar has a direction to fit in. 1. Removing Front Case (Figure 1) Although mark is not indicated for this 1) Secure the unit on the stand in the upright position.
  • Page 71 PDP-502MX, PDP-502MXE 3.Removing and installing Front Protection Panel 1) Remove all 30 screws E: BPZ30P080FZK that fixes Panel Note) Attach Panel Cushion V along the base of bending line of Panel Holder V and Panel Holder Assy to Front Case.
  • Page 72: Wiring

    PDP-502MX, PDP-502MXE 7.1.3 WIRING When forming the wire cables, be careful not to exert excessive Matters that require attention of upper contact pressure on the cables as this will result in the disconnection of the connector (Use with VIDEO ASSY A33 and connectors.
  • Page 73 PDP-502MX, PDP-502MXE Earth AC Inlet Power SW (S1) Ferrite Core To Ferrite Core To Ferrite Core To J112 POWER POWER SW (S1) SW (S1) AC Inlet AC Inlet Brown Blue MAIN POWER ASSY MAIN POWER ASSY VIDEO ASSY VIDEO ASSY...
  • Page 74 PDP-502MX, PDP-502MXE DIGITAL VIDEO ASSY DIGITAL VIDEO ASSY Y DRIVE ASSY Wire Assy is inserted in a wire saddle, and it is controlled, and it is touched in bottom if possible X DRIVE ASSY U-COM ASSY...
  • Page 75 PDP-502MX, PDP-502MXE Flexible cable of CABLE Assy (5) does styling under flexible cable of CABLE Assy (4) Flexible Cable let the ferrite core going through Flexible cable of CABLE Assy (1) does styling under flexible cable of CABLE Assy (2)
  • Page 76: Panel Facilities And Specifications

    PDP-502MX, PDP-502MXE 8. PANEL FACILITIES AND SPECIFICATIONS PANEL FACILITIES Main unit Operation panel on the main unit (for PDP-502MX and PDP-502MXE) STANDBY/ON Main unit INPUT MENU ADJUST SIZE DISPLAY Main unit Note Display stand When optional speakers have been connected,...
  • Page 77 PDP-502MX, PDP-502MXE Remote Control Unit (for PDP-502MX and PDP-502MXE) STANDBY SCREEN MUTING SIZE INPUT VIDEO (BNC) (D-sub) DISPLAY MENU Î SET button STANDBY/ON button Press to adjust or enter various settings on the unit. Press to put the unit in operation or standby mode.
  • Page 78 PDP-502MX, PDP-502MXE Control Panel (for PDP-502MX) On this unit there are 4 input system terminals and 2 output system terminals. There are also CONTROL terminals for connection of PIONEER components with the Î mark. – ANALOG OUTPUT – SPEAKER RS-232C 8 Ω...
  • Page 79 PDP-502MX, PDP-502MXE – 75Ωj2.2kΩ MAIN POWER AC INLET SPEAKER S-VIDEO VIDEO OUTPUT 8 Ω – 16 Ω OFF ON INPUT2 INPUT1 (INPUT1) [ON SYNC] INPUT3 [H/V SYNC] INPUT3 INPUT1 For connection of components that have RGB or For connection of components that have a composite...
  • Page 80 Note: The RGB signal will not be output from the CONTROL IN/OUT INPUT4 OUTPUT terminal when the main power of this For connection of PIONEER components that bear the unit is off or in standby mode. Î mark. Making CONTROL connection enables control of this unit as a component in a system.
  • Page 81 PDP-502MX, PDP-502MXE – 75Ωj2.2kΩ MAIN POWER AC INLET SPEAKER 8 Ω – 16 Ω OFF ON [ON SYNC] INPUT3 [H/V SYNC] INPUT3 For connection of a personal computer. Synchronizing signal impedance selector switch Depending on the connections made at INPUT3, it may be necessary to set this switch to match the output impedance of the personal computer’s...
  • Page 82: Specifications

    PDP-502MX, PDP-502MXE SPECIFICATIONS INPUT 4 For PDP-502MX Input Mini D-sub 15 pin (socket connector) 1 RGB signal (G ON SYNC compatible) General RGB ... 0.7 Vp-p/75 Ω/no sync. Light emission panel .... 50 inch plasma display panel HD/CS, VD ... TTL level Number of pixels ..........
  • Page 83: Pdp-502mx Only

    PDP-502MX, PDP-502MXE For PDP-502MXE Accessories General Light emission panel .... 50 inch plasma display panel Remote control unit ............1 Remote control unit case ..........1 Number of pixels ..........1280 x 768 AA (R6/UM-3) batteries ............ 2 Power supply ......AC 100 – 240 V, 50/60 Hz Cleaning cloth ..............

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