PHILIPS 37TR21639
Service Manual

1-2

TABLE OF CONTENTS
Page Front page .............................................................................. 1-1 Table of contents ................................................................... 1-2 Survey of sets and features ................................................... 1-3 Survey of sets and boards ..................................................... 1-4

V. EXPLODED VIEWS AND PARTS LISTS
Mechanical parts list .............................................................. 5-1 Electrical parts list .................................................................. 5-4

III. SCHEMATICS
Interconnection wiring diagram .............................................. 3-1 Block diagram - Tuner1, TV ................................................... 3-2 Block diagram - Power Supply, Large Signal,TXT ................ 3-3 Block diagram - In/Out, Audio ................................................ 3-4 Block diagram - Tuner2, Video .............................................. 3-5 Block diagram - Central Control, Deck Electronics ............... 3-6 TV Board (TVB) Power Supply (PS) - Schematic diagram .............................. 3-7 Deflection (LS) - Schematic diagram ..................................... 3-8 Tuner 1 (TU1) - Schematic diagram ...................................... 3-9 TV Processing (TV) - Schematic diagram ........................... 3-10 Input/Output (IO_1) - Schematic diagram ........................... 3-11 View Selector Audio (SF) - Schematic diagram .................. 3-12 Amplifier (AMP) - Schematic diagram ................................. 3-13 Teletext Controller (COTV) - Schematic diagram ................ 3-14 Recorder Unit Board (RUB) Power Supply (PS) - Schematic diagram ............................ 3-15 Central Control 1 (AIO1) - Schematic diagram .................... 3-16 Central Control 2 (AIO2) - Schematic diagram .................... 3-17 Deck Electronics (DE) - Schematic diagram ....................... 3-18 Clock, VPS, Buzzer (CVB) - Schematic diagram ................ 3-19 Tuner 2 (TU2) - Schematic diagram .................................... 3-20 Sound Processing (AP) - Schematic diagram ..................... 3-21 FM-Audio Processing (AF) - Schematic diagram ................ 3-22 Linear Audio Processing (AL) - Schematic diagram ............ 3-23 Video Signal Processing (VS) - Schematic diagram ........... 3-24 SECAM Processing (VSEC) - Schematic diagram ............. 3-25 Head Amplifier (HA) - Schematic diagram .......................... 3-26 Headphone, Front-AV Board (HPAV) Schematic diagram .............................................................. 3-27 CRT-Board (PT) Schematic diagram .............................................................. 3-28 Audio Board (APDOD) Pre Amplifier (ACO) - Schematic diagram ........................... 3-29 Audio Processing (AF2) - Schematic diagram .................... 3-30 Sound Feature Board (SFD) Schematic diagram .............................................................. 3-31 Cinch Out, Scart 2 Board (DOSCD) Schematic diagram .............................................................. 3-32 Keys & Display Board (KB1D) Schematic diagram .............................................................. 3-33 Key Board (KB2D) Schematic diagram .............................................................. 3-34 Mainsfilter Board (MFSWD) Schematic diagram .............................................................. 3-34 Variant list Tuner 1 - TV Board (TVBAD) .............................................. 3-35 Tuner 2- Recorder Unit Board (RUBAD) ............................. 3-36

IV. CIRCUIT BOARD DIAGRAMS
Sound Feature Board (SFD) .................................................. 4-1 Mainsfilter Board (MFSWD) ................................................... 4-1 Audio Board (APDOD) ............................................................ 4-1 TV Board (TVBCD), CRT Board, HPAV Board, Switch Board .. Components side .................................................................... 4-2 Copper side ............................................................................ 4-5 TV Board (TVBDD), CRT Board, HPAV Board, Switch Board .. Components side .................................................................... 4-6 Copper side ............................................................................ 4-9 Recorder Unit Board (RUB2D) Components side ................................................................. 4-10 Copper side .......................................................................... 4-11 Cinch Out, Scart 2 Board (DOSCD) .................................... 4-12 Keys & Display Board (KB1D, KB2D) ................................ 4-12