Philips LX700/21S/22S/25S Service Manual

Philips LX700/21S/22S/25S Service Manual

Digital a/v surround receiver

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Digital A/V Surround Receiver
Service
Service
Service
Service
Service
Service Manual
©
Copyright 2001 Philips Consumer Electronics B.V. Eindhoven, The Netherlands
All rights reserved. No part of this publication may be reproduced, stored in a retrieval system or
transmitted, in any form or by any means, electronic, mechanical, photocopying, or otherwise
without the prior permission of Philips.
Published by SL-ET0316 Service Audio Printed in The Netherlands
Version 1.0

TABLE OF CONTENTS

Location of PCBs ............................................................. 1-2
Version Variations &Package .......................................... 1-2
Technical Specifications .................................................. 1-3
Measurement Setup ........................................................ 1-4
Service Aids ..................................................................... 1-5
ESD & Safety Instruction ................................................. 1-6
System Setup & Controls .................................... 1-7 to 1-11
Troubleshooting ............................................................. 1-12
Repair Instructions ................................................. 2-1 to 2-2
Set Block & Wiring Diagram ............................................... 4
Key / Power Switch Board .................................................. 5
Source + Phone / 6ch in Board .......................................... 6
Power Board ....................................................................... 7
Main Board ......................................................................... 8
Set Mechanical Exploded View & Parts list ....................... 9
Subject to modification
LX700/
21S/22S/25S
Page
P R E P A R E D
D I G I T A L
S U R R O U N D
GB
3140 785 32480

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Summary of Contents for Philips LX700/21S/22S/25S

  • Page 1: Table Of Contents

    Set Mechanical Exploded View & Parts list ....... 9 © Copyright 2001 Philips Consumer Electronics B.V. Eindhoven, The Netherlands All rights reserved. No part of this publication may be reproduced, stored in a retrieval system or transmitted, in any form or by any means, electronic, mechanical, photocopying, or otherwise without the prior permission of Philips.
  • Page 2 LOCATION OF PCB BOARDS VERSION VARIATION: Type/Versions LX700D LX700D LX700D Features & /21S /22S /25S Board in used RDS function By software Grid Switch Line Cord (Detachable) Line Cord (Fixed) AC Voltage (110V~127V / 220~240V) AC Voltage (220V~240V) AC Voltage Selector...
  • Page 3: Specifications

    SPECIFICATIONS MISCELLANEOUS / GENERAL SECTION Power Supply Rating........220~240V/50 Hz AMPLIFIER SECTION /22S/25S Power Output ...110~127V/220~240V, 50 /60Hz /21S - Stereo mode (DIN)..........2 x 50 W - Surround mode (1 kHz)......50 W RMS/channel Power Consumption..........160 W Total Harmonic Distortion...10 % at rated power (1 kHz) Dimensions (w x h x d)....
  • Page 4: Measurement Setup

    MEASUREMENT SETUP AC MILLIVOL TME TER LOAD 4 OHM AUTO DISTORTION METER AC MILLIVOL TME TER LOAD 4 OHM AUTO DISTORTION METER OSCIL LOSCOPE OSCIL LOSCOPE ..........INPUT INPUT LOOP AM LOOP ANT SIGNAL GENERATORAC SIGNAL GENERATORAC AM-FM STEREO SIGNAL AM-FM STEREO SIGNAL GENERATOR...
  • Page 5: Service Aids

    SERVICE AIDS ESD Equipment: Service Tools: Anti-static table mat - large 1200x650x1.25mm ...4822 466 10953 Universal Torx driver holder .........4822 395 91019 anti-static table mat - small 600x650x1.25mm ..4822 466 10958 Torx bit T10 150mm ...........4822 395 50456 Anti-static wristband ..........4822 395 10223 Torx driver set T6-T20 .........4822 395 50145 Ω) Connectorbox (1M...
  • Page 6 WARNING WAARSCHUWING All ICs and many other semi-conductors are Alle IC’s en vele andere halfgeleiders zijn susceptible to electrostatic discharges (ESD). gevoelig voor electrostatische ontladingen Careless handling during repair can reduce life (ESD). drastically. Onzorgvuldig behandelen tijdens reparatie kan When repairing, make sure that you are de levensduur drastisch doen verminderen.
  • Page 7: Connecting The Speakers

    Connections NEODYMIUM RIBBON TWEETER NEODYMIUM RIBBON TWEETER NEODYMIUM RIBBON TWEETER NEODYMIUM RIBBON TWEETER HI-FREOUENCY HI-FREOUENCY HI-FREOUENCY HI-FREOUENCY S S U U B B AC MAIN S ~ + + + + S S U U B B Before connecting the speakers: IMPORTANT! Mount the speakers onto the mini –...
  • Page 8: Connecting Antennas

    Connections Connecting antennas Connecting from a DVD and MW Indoor Loop Antenna additional components Connect the supplied MW loop antenna to the MW To listen to playback from your DVD or SACD player. jack. Position the loop antenna to receive the clearest sound.
  • Page 9 Connections Preparations Notes: – If the audio format of the digital input does not match the capabilities of your Receiver, it will produce a strong distorted sound or no sound at all – Always refer to the instruction manual of the connedted equipment to make an optimal connection Recording from the digital output It is possible to connect a digital recorder to the digital...
  • Page 10: Functional Overview

    1-10 Functional Overview Front and Rear panels SURROUND PROGRAM – to select multichannel surround(Dolby Digital, DTS, – in Tuner mode, to program MW/FM stations. Dolby Pro Logic or Dolby Pro Logic II) or stereo SOURCE sound effect. – to select the desired source or external input source TUNING S T (TV/AV, DISC DI, DISC 6CH, TUNER or AUX).
  • Page 11: Remote Control

    – to switch to standby mode. Notes: The following keys only operate for a Philips DVD player. For details , please refer to a Philips DVD player instruction manual. DISC - DVD MENU – to enter or exit the disc contents menu.
  • Page 12: Troubleshooting

    1-12 Troubleshooting WARNING! Under no circumstances should you try to repair the system yourself, as this will invalidate the warranty. Do not open the system as there is a risk of electric shock. If a fault occurs, first check the points listed below before taking the system for repair. If you are unable to solve a problem by following these hints, consult your dealer or service center.
  • Page 13: Repair Instructions

    REPAIR INSTRUCTION...
  • Page 14 REPAIR INSTRUCTION...
  • Page 15: Disassembly Instructions

    DISASSEMBLY INSTRUCTIONS 1) Loosen 9 screws and remove the Top Cover by lifting the rear portion upwards before sliding it out towards the rear. - 5 screws on the back - 2 screws each on the left & right side 2) Loosen 7 screws &...
  • Page 16 SERVICE POSITIONS Service position A Service position B...
  • Page 17 BLOCK DIAGRAM...
  • Page 18 WIRING DIAGRAM...
  • Page 19: Key / Power Switch Board

    CF745 INTERNAL BLOCK DIAGRAM 9-11 T0CKI OSC1 OSC2 MCLR CONFIGURATION WORD 9-11 EPROM/ROM STACK 1 512 X 12 TO STACK 2 “DISABLE” “OSC 2048 X 12 SELECT” WATCHDOG TIMER “CODE PROTECT” OSCILLATOR/ INSTRUCTION TIMING & REGISTER CONTROL WDT TIME CLKOUT WDT/TMR0 PRESCALER “SLEEP”...
  • Page 20: Circuit Diagram

    CIRCUIT DIAGRAM R247 R255 R501 C201 R503 C202 R504 C203 R505 C204 R506 C205 R984 C207 R987 C208 R988 C209 R989 C212 R991 C213 R992 C214 R993 C215 R994 C217 R995 C218 RB201 C501 RB202 C502 RB501 C503 RB2001A C2 C506 RB2001B C2 C507...
  • Page 21 PCB LAYOUT VIEW C201 CN2002 LD201 A1 RB201 TA204 C203 D201 R204 RB202 TA206 C204 D202 R205 RB501 TA207 C212 D204 R206 RB2001A A1 TA209 C501 D985 R225 RB2001B A1 TA210 C503 DP201 R241 SN201 XL981 C510 DP202 R242 TA201 ZD201 C991 IC981...
  • Page 22 ELECTRICAL PARTSLIST - KEY + POWER BOARD - MISCELLANEOUS - CN2002 9965 000 15895 CONNECTOR 5P DP201 9965 000 17398 VFD HNA-10SS28 DP202 9965 000 17399 VFD HNA-06SC09 LD201 9965 000 17400 LED RB2001 9965 000 17401 CON/WIRE 4P 40MM RB201 9965 000 17402 CON/WIRE 15P RB202...
  • Page 23: Source + Phone / 6Ch In Board

    SOURCE + PHONE / 6 CH IN BOARD TABLE OF CONTENTS Source + Phone Circuit Diagram ....... 6-2 Source + Phone PCB Layout ........6-2 6 CH IN Circuit Diagram ..........6-3 6 CH IN PCB Layout ..........6-3 Electrical Parts List(Source + Phone / 6CH IN) ..6-4...
  • Page 24 CIRCUIT DIAGRAM - SOURCE + PHONE PCB C214 C215 C217 C218 JK501 RB2002 A1 RB5001 B2 VL201 VL202 PCB LAYOUT - SOURCE + PHONE PCB C214 C215 C217 C218 JK501 RB2002 B1 RB5001 A2 VL201 VL202...
  • Page 25 CIRCUIT DIAGRAM - 6 CH IN PCB C3051 C3052 C3053 C3054 C3055 C3056 JK1-A JK1-B JK1-C R3052 R3053 R3054 R3055 R3056 R3057 R3058 R3059 R3060 R3061 R3062 R3063 RB3002A B2 PCB LAYOUT - 6 CH IN PCB C3051 C3052 C3053 C3054 C3055 C3056...
  • Page 26 ELECTRICAL PARTSLIST - KEY + POWER BOARD - MISCELLANEOUS - JK501 9965 000 12505 CINCH SOCKET 6P WHITE/RED RB2002 9965 000 17449 CON/WIRE 5P 230MM RB5001 9965 000 17450 CON/WIRE 4P 90MM VL201 9965 000 17451 ROTARY L20XF7MM P2.5MM VL202 9965 000 17451 ROTARY L20XF7MM P2.5MM ELECTRICAL PARTSLIST - KEY + POWER BOAR D - MISCELLANEOUS -...
  • Page 27: Power Board

    TL431 EQUIVALENT SCHEMATIC CATHODE 20 pF 3.28 k 10 k POWER BOARD 20 pF 2.4 k 7.2 k ANODE TOP249 BLOCK DIAGRAM DRAIN (D) CONTROL (C) INTERNAL SUPPLY TABLE OF CONTENTS SHUNT REGULATOR/ Internal IC Diagram............7-1 ERROR AMPLIFIER Circuit Diagram ..............7-2 SOFT START 5.8 V 4.8 V...
  • Page 28 CIRCUIT DIAGRAM BR901 A3 C908 C919 C933 C949 C966 CN907 B3 D907 L902 R901 R919 R931 R948 XRB906D6 ZD901 A4 C901 C909 C920 C938 C950 C967 CN908 B3 D908 L903 R902 R920 R932 R949 RL901 C3 ZD902 C4 C902 C910 C925 C939 C951...
  • Page 29 POWER PCB LAYOUT BR901 B2 C908 C919 C933 C949 C966 CN907 A2 D907 JW904 C3 C5038 C5 P904 R908 R928 R947 RB905 B4 RB905 B4 C901 C909 C920 C938 C950 C967 CN908 C1 D908 JW905 C3 L901 P905 R901 R919 R931 R948 RB906 C4...
  • Page 30 ELECTRICAL PARTSLIST - POWER BOARD - MISCELLANEOUS - - IC & TRANSISTORS - IC904 9965 000 17387 IC TL431 CN902 9965 000 15936 CONNECTOR 4P CN907 9965 000 17458 CONNECTOR 3P /21S Q903 9965 000 17396 PN2222A FAIRCHILD CN908 9965 000 17459 CONNECTOR 5P /21S Q904 9965 000 17397...
  • Page 31: Main Board

    LC72131 INTERNAL IC DIAGRAM REFERENCE PHASE DETECTOR DIVIDER CHARGE PUMP XOUT SWALLWO COUNTER AOUT UNLOCK DETECTOR FMIN 1/16 1/17 4bit8 12bit8 PROGRAMMOBLE AMIN DIVIDER MAIN BOARD UNIVERSAL IFIN DATA SHIFT REGISTERLATCH COUNTER POWER V DD RESET V SS B02 B03 TABLE OF CONTENTS ST505 INTERNAL IC DIAGRAM Internal IC Diagram ............
  • Page 32 SYNCHRONOUS DRAM LA1837 INTERNAL IC DIAGRAM 1MX16Y3VTW PIN ASSIGNMENT (Top View) 3 rd 5 th 50 - Pin TSOP DECODER ANTI-BIRDIE RF.AMP BUFF MUTE P-DET DQ15 STEREO DQ14 VssQ VssQ Note: The # symbol indicates signal is active LOW. DQ13 DQ12 1 M eg x 16 Configuration...
  • Page 33 DIGITAL AUDIO PROCESSOR DIGITAL AUDIO PROCESSOR STA308 STA308 PIN CONNECTION (Top view) BLOCK DIAGRAM SCL SDA OUT1A/B 59 58 57 56 53 52 51 50 49 LRCKI OUT2A/B OUT2_A BICKI SERIAL OUT3A/B OUT2_B OVERSAMPLING SDI12 DATA OUT4A/B VDD3 SDI34 SYSTEM OUT5A/B SDI56 CONTROL...
  • Page 34 DIGITAL AUDIO PROCESSOR OCTAL BUFFER / LINE DRIVER STA308 74HCT244 PIN FUNCTION (continued) NAME TYPE DESCRIPTION PAD TYPE Crystal Oscillator Input (Clock Input) 3.3V Tolerant TTL Schmitt Trigger Input Buffer FILTER_PLL PLL Filter Analog Pad VDDA PLL 2.5V Supply 2.5V Analog Power Supply Voltage GNDA PLL Ground...
  • Page 35 OCTAL BUFFER / LINE DRIVER MULTI-PURPOSE FLASH 74HCT244 SST39SF020A UNCTIONAL LOCK IAGRAM SuperFlash X-Decoder Memory Memory Address Address Buffers & Latches Y-Decoder I/O Buffers and Data Latches Control Logic DQ 7 - DQ 0 398 ILL B1.2 PDIP SSIGNMENTS FOR SST39SF040 SST39SF020A SST39SF010A...
  • Page 36 CIRCUIT DIAGRAM (TOP LEFT) Q9034 C1001 C1002 C1003 C1004 R149 C1005 R150 C1006 R1003 C1007 R1004 C1022 R1005 C1023 R1012 C1024 R1013 C1031 R1041 C1032 R1042 C1033 R1043 C1036 R1045 C1100 R1046 C1101 R1047 C1102 R1048 C1103 R1049 C1104 R1051 C1105 R1052 C1106...
  • Page 37 CIRCUIT DIAGRAM (TOP RIGHT) C001 C1075 R167 C003 C1076 R168 C005 C1077 R170 C006 C1078 R1001 C007 C1079 R1002 C008 C1080 R1006 C009 C1081 R1007 C010 C1082 R1015 C011 C1083 R1016 C012 C1084 R1017 C013 C1091 R1018 C014 C1092 R1019 C015 C1093 R1020...
  • Page 38 CIRCUIT DIAGRAM (BOTTOM LEFT) C301 CN3001 G1 R391 C302 D301 R392 C303 D302 R393 C304 D3001 R394 C305 D3002 R395 C306 D3003 R396 C307 IC301 R397 C308 IC302 R398 C309 IC304-A F3 R399 C311 IC304-B F3 R1044 C312 IC305-A E3 R1063 C313 IC305-B F3...
  • Page 39 CIRCUIT DIAGRAM (BOTTOM RIGHT) C401 C5026 R1065 C404 C5027 R1066 C405 C5028 R1067 C406 C5029 R1068 C409 C5030 R1069 C410 C5031 R1070 C411 C5032 R3065 R3067 C412 C5033 C413 C5034 R4070 C426 C5035 R4071 C427 C5036 R4072 C428 C5037 R4074 C429 C5038 R4075...
  • Page 40 8-10 8-10 PCB LAYOUT (COMPONENT VIEW)
  • Page 41 8-11 LAYOUT MAPPING (COMPONENT VIEW) C381 C1114 B3 D002 R3011 Q1002 B4 R364 C001 A1 C382 C1115 B5 D003 Q3001 B1 R365 R3012 C005 A2 C383 C1120 C4 D004 Q3010 B1 R366 R3013 C006 A2 C384 C1130 B4 D101 Q3011 B1 R367 R3014 C007 A3...
  • Page 42 8-12 LAYOUT MAPPING (COPPERSIDE VIEW) C5032 C5033 C5034 C5035 C5036 C5037 C5038 C5039 C5040 C5041 C003 C5042 C013 C5051 C016 C5052 C111 C5053 C129 C5054 C130 C5055 C131 C5056 C132 C9004 C133 C9006 C154 C9011 C155 C9023 C173 C9032 C174 C9035 C316 C9037...
  • Page 43 8-13 8-13 PCB LAYOUT (COPPERSIDE VIEW)
  • Page 44 8-14 8-14 ELECTRICAL PARTSLIST - MAIN BOARD ELECTRICAL PARTSLIST - MAIN BOARD - COILS & FILTERS - - IC & TRANSISTORS - - MISCELLANEOUS - - COILS & FILTERS - CN001 9965 000 15855 CONNECTOR S2B-XH-A 2 P CF102 9965 000 15868 CER FILTER 10.7 MHz T105 9965 000 15879 FM IFT 10.7MHZ Q=60 MIN...
  • Page 45 EXPLODED DRAWING LX700/33S/35S ONLY LX700/21S/39S ONLY LX700/22S/25S ONLY...
  • Page 46 RUBBER FOOT 9965 000 17356 PLASTIC BRACKET 9965 000 17355 SPACER 9965 000 17337 SURROUND KEY 9965 000 12424 PHILIPS LOGO 9965 000 17342 POWER KEY COVER 9965 000 17341 POWER KEY 9965 000 17345 LED LENS 9965 000 15983...

This manual is also suitable for:

Lx700d21sLx700d22sLx700d25s

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