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Pioneer AVX-505 Service Manual
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Pioneer AVX-505 Service Manual

Pioneer AVX-505 Service Manual

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S
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M anua l
AV SYSTEM MONITOR
AVX-505
- Precautions on Safety for Replacement of Backlight
• High voltage is generated in the inverter when the power is supplied to the system. To avoid an electric
shock, reconfirm that the power switch is set to OFF before starting operation.
• The fluorescent tube and high-voltage parts have high temperature immediately after the power
switch of the main unit is set to OFF. To avoid burning your hand or similar accidents, wait awhile after
turning the power to OFF, then start operation.
• High voltage may be charged to the inverter immediately after the power switch of the main unit is set
to OFF. Wait awhile after turning the power to OFF, then start operation.
• In some cases, the cold cathode tube of backlight may be damaged. Take adequate caution for injury
during operation.
CONTENTS
1. SAFETY INFORMATION ............................................2
2. EXPLODED VIEWS AND PARTS LIST .......................2
3. SCHEMATIC DIAGRAM ...........................................10
4. PCB CONNECTION DIAGRAM ................................30
5. ELECTRICAL PARTS LIST ........................................42
6. ADJUSTMENT..........................................................49
PIONEER ELECTRONIC CORPORATION
PIONEER ELECTRONICS SERVICE INC.
PIONEER ELECTRONIC [EUROPE] N.V.
PIONEER ELECTRONICS ASIACENTRE PTE.LTD. 501 Orchard Road, #10-00, Lane Wheelock Place, Singapore 23880
C PIONEER ELECTRONIC CORPORATION 1998
4-1, Meguro 1-Chome, Meguro-ku, Tokyo 153-8654, Japan
P.O.Box 1760, Long Beach, CA 90801-1760 U.S.A.
Haven 1087 Keetberglaan 1, 9120 Melsele, Belgium
7. GENERAL INFORMATION .......................................50
7.1 IC ........................................................................50
7.2 DIAGNOSIS ........................................................51
7.2.1 DISASSEMBLY...........................................51
LCD 5.5 MONITOR ....................................58
7.3 EXPLANATION ...................................................68
7.3.1 MECHANISM DESCRIPTIONS ..................68
7.3.2 BLOCK DIAGRAM......................................70
8. OPERATIONS AND SPECIFICATIONS.....................71
K-FED. APR. 1998 Printed in Japan
ORDER NO.
CRT2192
UC

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  • Page 1: Table Of Contents

    P.O.Box 1760, Long Beach, CA 90801-1760 U.S.A. PIONEER ELECTRONIC [EUROPE] N.V. Haven 1087 Keetberglaan 1, 9120 Melsele, Belgium PIONEER ELECTRONICS ASIACENTRE PTE.LTD. 501 Orchard Road, #10-00, Lane Wheelock Place, Singapore 23880 C PIONEER ELECTRONIC CORPORATION 1998 K-FED. APR. 1998 Printed in Japan...

  • Page 2: Safety Information

    AVX-505 1. SAFETY INFORMATION CAUTION 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 3 AVX-505 NOTE: - Parts marked by “*”are generally unavailable because they are not in our Master Spare Parts List. - Screws adjacent to mark on the product are used for disassembly. PACKING SECTION PARTS LIST Mark No. Description Part No.
  • Page 4 AVX-505 2.2 ACCESSORY ASSY ACCESSORY ASSY PARTS LIST Mark No. Description Part No. 1 Accessory Assy CEA2467 2 Spring CBH-865 3 Screw Assy CEA2465 4 Screw BMZ50P060FMC 5 Screw CBA-102 6 Screw CBA1002 7 Polyethylene Bag CEG-127 8 Screw CMZ50P060FMC...
  • Page 5 AVX-505 2.3 LCD 5.5 MONITOR - LCD 5.5 MONITOR PARTS LIST Mark No. Description Part No. 1 LCD 5.5 Monitor CWX2010 2 Rear Frame CZN3087 3 Screw PPZ20P040FMC 4 PCB Unit CZW3050 5 Sheet CZM3006 6 Side Frame CZN3008 7 Back Light Assy...
  • Page 6 AVX-505 2.4 EXTERIOR (1)
  • Page 7 AVX-505 EXTERIOR SECTION (1) PARTS LIST Mark No. Description Part No. Mark No. Description Part No. 1 Screw IMS20P040FZK 26 Rail CNS4011 2 Spring CBH-865 27 Keyboard Unit CWM5896 3 Grille Unit CXB2376 28 Screw BPZ20P080FMC 4 Screw CBA1002 29 Button...
  • Page 8 AVX-505 2.5 EXTERIOR (2)
  • Page 9 AVX-505 EXTERIOR SECTION (2) PARTS LIST Mark No. Description Part No. Mark No. Description Part No. 1 Cord Assy CDE5626 51 Connector(CN934) CKS3124 2 Resistor RS1/2PMF102J 52 Connector(CN935) CKS3124 3 Cap CNS1472 53 Connector(CN937) CKS3125 4 Cord Assy CDE5716 54 Connector(CN936)

  • Page 10: Schematic Diagram

    AVX-505 3. SCHEMATIC DIAGRAM 3.1 MICRO COMPUTER UNIT Note: When ordering service parts, be sure to refer to “EXPLODED VIEWS AND PARTS LIST” or “ELECTRICAL PARTS LIST”. RESET...
  • Page 11 AVX-505 AUDIO VISUAL MASTER UNIT SPEAKER...
  • Page 12 AVX-505 3.2 ENCODER UNIT...
  • Page 13 AVX-505 C D E F...
  • Page 14 AVX-505 3.3 KEYBOARD UNIT...
  • Page 15 AVX-505...
  • Page 16 AVX-505 3.4 PCB UNIT (LCD 5.5 MONITOR) - (1/5) CN939...
  • Page 17 AVX-505...
  • Page 18 AVX-505 - (2/5)
  • Page 19 AVX-505...
  • Page 20 AVX-505 - (3/5)
  • Page 21 AVX-505...
  • Page 22 AVX-505 - (4/5)
  • Page 23 AVX-505...
  • Page 24 AVX-505 - (5/5)
  • Page 25 AVX-505 Note:The encircled numbers denote measuring pointes in the circuit diagram. - Waveforms 1 Leading Waveform of T1 (Put probe near the T1) 5 Q6-collector AC 2V/div. 5µs/div. 20V/div. 5µs/div. 2 U4-7 6 CP203 200mV/div. 2µs/div. 1V/div. 20µs/div. 7 CP204 3 Q2-gate 1V/div.
  • Page 26 AVX-505 # DLP 9 VCK 1V/div. 20µs/div. 1V/div. 20µs/div. 0 VSP1 $ HSP1 1V/div. 5ms/div. 1V/div. 20µs/div. ! VSP2 % HSP2 1V/div. 5ms/div. 1V/div. 20µs/div. @ HCK ^ RSET 1V/div. 50ns/div. 1V/div. 5ms/div.
  • Page 27 AVX-505 ⁄ Q905-drain & COM 5V/div. 2µs/div. 1V/div. 20µs/div. * U901-10 ¤ CN3-22 2V/div. 2µs/div. 500mV/div. 20µs/div. ( Q902-collector ‹ TP302 2V/div. 20µs/div. 2V/div. 2µs/div. ) U901-7 › TP202 1V/div. 2µs/div. 500mV/div. 20µs/div.
  • Page 28 AVX-505 fi U401-5 500mV/div. 20µs/div. fl CN1-14 200mV/div. 200µs/div.
  • Page 29 AVX-505...

  • Page 30: Pcb Connection Diagram

    AVX-505 4. PCB CONNECTION DIAGRAM 4.1 MICRO COMPUTER UNIT MICRO COMPUTER UNIT NOTE FOR PCB DIAGRAMS 1. The parts mounted on this PCB include all necessary parts for several destination. For further information for respective destinations, be sure to check with the schematic diagram.
  • Page 31 AVX-505 SIDE A CORD ASSY RESET...
  • Page 32 AVX-505 MICRO COMPUTER UNIT...
  • Page 33 AVX-505 SIDE B...
  • Page 34 AVX-505 4.2 ENCODER UNIT SIDE A VOLUME, ENCODER PCB BRIGHT ANGLE MOTOR CN931 POSITION MOTOR SIDE B ENCODER PCB...
  • Page 35 AVX-505 ANGLE SENSE PCB ANGLE SENSE PCB SIDE A SIDE B CN937 ANGLE SENSE LIFT SENSE PCB LIFT SENSE PCB SIDE A SIDE B CN936 LIFT SENSE ANGLE 0 PCB CN935 ANGLE 0 D E F...
  • Page 36 AVX-505 4.3 KEYBOARD UNIT KEYBOARD UNIT OPEN/CLOSE KEYBOARD UNIT...
  • Page 37 AVX-505 SIDE A ANGLE DOWN ANGLE UP SIDE B CN100...
  • Page 38 AVX-505 4.4 PCB UNIT (LCD 5.5 MONITOR) PCB UNIT CN939...
  • Page 39 AVX-505 SIDE A...
  • Page 40 AVX-505 PCB UNIT...
  • Page 41 AVX-505 SIDE B...

  • Page 42: Electrical Parts List

    AVX-505 5. ELECTRICAL PARTS LIST NOTE: - Parts whose parts numbers are omitted are subject to being not supplied. - The part numbers shown below indicate chip components. Chip Resistor RS1/_S___J,RS1/__S___J Chip Capacitor (except for CQS..) CKS.., CCS.., CSZS..=====Circuit Symbol and No.===Part Name Part No.
  • Page 43 AVX-505 =====Circuit Symbol and No.===Part Name Part No. =====Circuit Symbol and No.===Part Name Part No. ------ ------------------------------------------ ------------------------- ------ ------------------------------------------ ------------------------- Volume CZC5100 (NT732ATD10KΩJ) CZC5098 Volume CZC5100 RS1/16S104J Volume CZC5095 RS1/16S104J Volume CZC5100 RS1/16S104J Volume CZC5100 RS1/16S103J Volume CZC5095 RS1/16S105J...
  • Page 44 AVX-505 =====Circuit Symbol and No.===Part Name Part No. =====Circuit Symbol and No.===Part Name Part No. ------ ------------------------------------------ ------------------------- ------ ------------------------------------------ ------------------------- RS1/16S153J RS1/16S0R0J RS1/16S153J RS1/16S101J RS1/16S472J RS1/16S0R0J RS1/16S183J RS1/16S750J RS1/16S104J RS1/16S750J RS1/16S104J RS1/16S750J RS1/16S103J RS1/16S750J RS1/16S102J RS1/16S750J RS1/16S102J RS1/16S750J RS1/16S102J...
  • Page 45 AVX-505 =====Circuit Symbol and No.===Part Name Part No. =====Circuit Symbol and No.===Part Name Part No. ------ ------------------------------------------ ------------------------- ------ ------------------------------------------ ------------------------- RS1/16S223J CKSRYB152K50 RS1/10S100J (CX43Y5U106Z25B) CZC5088 RS1/4S471J CCSRCH102J50 RS1/10S0R0J CKSQYB332K50 RS1/10S0R0J (CX43Y5U106Z25B) CZC5088 RS1/10S100J (CX43Y5U106Z25B) CZC5088 RS1/16S103J CKSRYF104Z25 RS1/16S104J (CM32Y5V105Z50A)
  • Page 46 AVX-505 =====Circuit Symbol and No.===Part Name Part No. =====Circuit Symbol and No.===Part Name Part No. ------ ------------------------------------------ ------------------------- ------ ------------------------------------------ ------------------------- CKSRYF104Z25 Unit Number : CWM5895 CKSRYF104Z25 Unit Name : Micro Computer Unit (CM32Y5V106Z16A) CZC5087 (THCS53E1E106Z) CZC5101 MISCELLANEOUS CKSRYF104Z25 PD4703C...
  • Page 47 AVX-505 =====Circuit Symbol and No.===Part Name Part No. =====Circuit Symbol and No.===Part Name Part No. ------ ------------------------------------------ ------------------------- ------ ------------------------------------------ ------------------------- Inductor LCTB2R2K2125 RS1/4S681J Resonator 6.290MHz CSS1307 RS1/10S103J Switch(RESET) CSG1020 RS1/10S103J EMI Filter CCG1006 RS1/10S103J CCG1067 RS1/10S103J CCG1067 RS1/4S102J CCG1067...
  • Page 48 AVX-505 =====Circuit Symbol and No.===Part Name Part No. ------ ------------------------------------------ ------------------------- Encoder Unit Consists of Encoder PCB Angle 0 PCB Angle Sense PCB Lift Sense PCB C D E F Unit Number : CWM5892 Unit Name : Encoder Unit MISCELLANEOUS...

  • Page 49: Adjustment

    AVX-505 6. ADJUSTMENT - Adjustment of the LCD 5.5 Monitor 1. Adjustment of Invertor Power Supply 1 TP3 voltage : Adjust VR2 so that the voltage is 22 ±0.1 V at room temperature. 2. Adjustment of Signal Power Supply 1 Adjustment of oscillation frequency : Observe the waveforms of Q902 collector, and adjust VR901 so that oscillation frequency is 200 ±2 kHz.

  • Page 50: General Information

    AVX-505 7. GENERAL INFORMATION 7.1 IC - Pin Functions (PD4703C) Pin No. Pin Name Format Function and Operation KDT3 Key data input Not used AVSS A/D converter GND Not used AVREF1 A/D converter reference voltage 8-26 Not used Not used...

  • Page 51: Diagnosis

    AVX-505 7.2 DIAGNOSIS 7.2.1 DISASSEMBLY - Removing the Cover 1. Remove the two screws C to remove the Cover. - Removing the Case (Not shown) 1. Insert tweezers or a similar tool into the notch of the - Removing the Monitor Case to remove it.
  • Page 52 AVX-505 - Removing the Case Unit - Removing the Gear Unit 1. Remove screw G to remove the Shaft. 1. Remove the two screws L to remove the Guide. 2. Remove screw H to remove the Case Unit. 2. Remove the Gear Unit.
  • Page 53 AVX-505 - Removing the Keyboard Unit - Precautions on assembly of the Case Unit 1. Remove the connector to remove the Keyboard Unit. Install the Insulator as shown in Fig. 3. If the Insulator is installed as shown in Fig. 4, the Insulator will deform, resulting in incorrect operation of the Monitor.
  • Page 54 AVX-505 - Precautions after replacement of parts of the LCD 5.5 Monitor Parts Checking point Rear frame Product name (NL3224xxx) Lot No. (B65xxx) Panel No. (K026xxx) For quality control of the LCD 5.5 Monitor, write down: Substrate Unit Adjust flicker in advance.
  • Page 55 AVX-505 - Replacement of Backlight of the LCD 5.5 Monitor 1. Facilities and tools required for operation (5) Remove the flexible PCB shown as “b,” and the (1) Fingerstalls connector shown as “c” in Fig. 6. (2) Grounding band Note: Do NOT damage the flexible PCB.
  • Page 56 AVX-505 2) Do NOT damage the flexible PCB. (16) As shown in Fig. 6, install the flexible PCB (“b”) and connector (“c”). Note: 1) Do NOT damage the flexible PCB. (17) Use a cross-head-tip screwdriver to install the two screws to parts “a” ( ) as shown in Fig. 6.
  • Page 57 AVX-505 Side Frame Rear Frame Protection Sheet Fig. 5 Fig. 7 Unit Flexible Flexible PCB Fig. 6 Fig. 8 - Precautions on Replacement of Backlight Assembly • The panel surface can be easily damaged. Take • The cold cathode tube of the Backlight Assy is made proper measures to protect the surface of the LCD of glass.

  • Page 58: Troubleshooting For Lcd 5.5 Monitor

    AVX-505 7.2.2 TROUBLESHOOTING FOR LCD 5.5 MONITOR Power does not turn ON. NO : Abnormal YES : Normal Check the Check the system voltage of CN1- 2,3,8,9,PWRFL and PWRVI. Is power and correct. the voltage 9.5 1.0 V? Correct the Check CN1-1 DIMM voltage.
  • Page 59 AVX-505 Check the voltage of Q1-drain. Is the voltage 9.5 ±1.5 V? Check the voltage of Q11-collector. Is the voltage 0.5 V or lower? DC/DC convertor protection circuit is in operation mode. Return to the manufacturer. Check the waveform Check the waveform of Replace U4, then readjust.
  • Page 60 AVX-505 From the previous page Check the voltage Replace U3. of TP6. Is the voltage 0.5V or lower? Check the voltage of Replace U2. TP7. Is the voltage 8±1.0 V ? Check the waveform Check the waveform of (waveform 5).
  • Page 61 AVX-505 Display shows white screen when the power is turned ON. Check the Check the system power voltage of CN1-8, 9 and and correct. PWRVI. Is the voltage 9.5 ±1.0 V? Connect CN1 and CN3 Check connection correctly. between CN1 and CN3.
  • Page 62 AVX-505 From the previous page Check the waveforms Check the waveforms Replace U201. of CP203 and CP204. (waveforms 6 and 7). Check the waveform Check the waveform of Replace U601. (waveform 8). U501-17. Check the waveform Check the waveform of CN3.
  • Page 63 AVX-505 Check the voltage of Replace Q901. Q901 drain. Is the voltage 9.5 ±1.5V? Replace U901, then Check the waveform Check the waveform of readjust (2-12). (waveform *). U901-10. Check the waveform Replace Q2, then Check the waveform of (waveform ().
  • Page 64 AVX-505 Contrast has deteriorated. NO: Abnormal YES: Normal Check the Replace Q908 and Q910, voltage of TP107. Is then readjust (2-4). the voltage -15 ±1.0 V? Replace Q906 and Q907, Check the voltage of then readjust (2-3). TP106. Is the voltage -8 ±1.0 V?
  • Page 65 AVX-505 Display shows no green color. Malfunction cannot be Check the waveform Check the waveform of identified. Return to the (waveform ¤). CN3-22. manufacturer. Check the waveform Check the waveform of Replace Q705 and Q709. (waveform ‹). TP302. Check the waveform...
  • Page 66 AVX-505 Display shows no red color. Malfunction cannot be Check the waveform Check the waveform of identified. Return to the (waveform ¤). CN3-24. manufacturer. Check the waveform Check the waveform of Replace Q704 and Q708. (waveform ‹). TP301. Check the waveform...
  • Page 67 AVX-505 Display shows no blue color. Malfunction cannot be Check the waveform Check the waveform of identified. Return to the (waveform ¤). CN3-20. manufacturer. Check the waveform Check the waveform of Replace Q706 and Q710. (waveform ‹). TP303. Check the waveform...

  • Page 68: Explanation

    AVX-505 7.3 EXPLANATION 7.3.1 MECHANISM DESCRIPTIONS - Outline of operation - Electrical conditions 1. The system operates by using the forward/backward 1. Motor terminal voltage (position motor for ejection, driving motor and the angle controlling motor. and angle motor for angling) 2.
  • Page 69 AVX-505 - Storage 1. The system operates the position motor forward 5 seconds after the OPEN/CLOSE key is pressed or ACC is set to OFF. The system continues to operate the motor until the Position Sensing switch (Lift switch) is set to OFF.

  • Page 70: Block Diagram

    AVX-505 7.3.2 BLOCK DIAGRAM...

  • Page 71: Operations And Specifications

    AVX-505 8. OPERATIONS AND SPECIFICATIONS AV Monitor System The following diagram shows the monitor when it is deployed. Brightness control Volume control Monitor OPEN/CLOSE button ANGLE button DETACH button Signal receptor Note: • Use the remote control products for the AUDIO VISUAL MASTER UNIT by pointing them at...
  • Page 72 AVX-505 General Monitor Power source ....14.4 V DC (10.8 – 15.1 V allowable) Screen size .............. 5.5 in dia Grounding system .......... Negative type (effective display area: 83.5 111.36 mm) Max. current consumption ..........1.5 A Pixels ................ 224,640 Dimensions Type ......

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