Philips 21PV320 - Service Manual

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Table of Contents2
Survey of Sets and Features3
Survey of the Boards5
Updating the Service Manual7
Modifications in the Set7
Technical Data8
Safety Instructions9
Operating Instructions10
The Remote Control11
Back/Front of the Set12
Connections14
Installation14
Connecting the Cables14
Automatic Clock and Date Setting (Smart Clock)14
Allocating a Decoder15
Manual Tv/Radio Channel Search15
Satellite Receiver15
Automatic TV Channel Search15
Channel Number Allocation16
Delete a TV Channel16
Setting the Language/Country16
Setting the Time and Date16
Important Notes for Operation17
TV Set Functions17
Selecting a TV Programme17
Volume Control17
Radio Functions18
Playback Functions18
Playing a Cassette18
Tape Position Indication18
Manual Recording19
Tracking During Playback19
Recording Without Automatic Switch-Of19
Selecting the Recording Speed (SP or LP)19
Programmed Recording (Timer)20
VPS (Video Programming System) and PDC (Programme Delivery Control)20
Programming a Recording (With/Without 'Videoplus')20
How to Check/Change/Clear a Timer21
How to Read Teletext21
Changing the TV System21
Parental Control21
Switching the On-Screen Display (OSD) on or off22
Continuous Playback22
Switch off Function (Sleep Timer)22
Switch on Function (Wake-Up Timer)22
List of Signal Abbreviations23
Adjustment Procedures29
Maintenance of the VCR and TV Parts29
Service Position for the Recorder Part29
Service Position for the TV Board (TVB)29
Test Point Information30
Removal or Installation of Flat Cables30
Removing the Keypad Printed Board30
Method for Manual VCR Loading/Unloading31
Service Test Program32
Calling up the Service Test Program33
Service Status Menu33
Function of the Init Switch33
Tape Start/Tape End Detection33
Head Drum Pulses34
Drive Status34
Boot Software34
Drive Error Codes34
Service Control Menu35
Deleting the Eeproms35
I2C-Bus Error35
Display on the Second Tuner35
Hotel Mode36
Option Codes36
Basic TV Settings36
Autom. Black Current Control (ABS Loop)36
Customer Service Mode (CSM)37
Calling up the Customer Service Mode37
Operation Inside the CSM37
How to Move the Cassette Holder to the down Position39
How to Remove the Lift Assembly39
Variable Voltage Isolation Transformer40
Cleaning with 91% Isopropyl Alcohol40
High Voltage Components40
How to Read the Disassembly/Assembly Procedures40
Mechanical Adjustment Procedures41
Dismantling the Cabinet Parts41
Procedure Fore Cleaning the Head Drum44
Tape Deck Mechanism44
Deck Parts Replacement44
Upper Cylinder Replacement45
Replacing the Scanner Assy/Head Drum Motor47
Position Adjustment of the Tension Arm47
Brake Band Adjustment47
Tape Tension Adjustment47
Tape Path Adjustment (Final Adjustment)48
Audio/Ctl Head Adjustment/Tilt Angle Adjustment48
Height and Azimuth Adjustments48
Control with the TRIV Signal of the Tape Path Adjustment49
"X" Distance Adjustment49
Left and Right Roller Unit49
Friction Clutch Control in Playback50
Reverse Brake Control50
Capstan Motor Replacement50
Disassembly/Assembly Procedures of Mechanism51
Mechanism View52
Pressure Roller53
Loading Motor53
Audio/Ctl Head54
Right Roller Unit54
Left Roller Unit55
Mechanical Alignment Procedures57
Circuit Description58
Large Signal Part58
Description of Different Load Operations58
Control Range58
Large Signal Processing (TV, LS, PT) - TVBAD59
TV-IC Tda884X (IC7205) Controlled Using I2C Bus59
Horizontal Deflection Stage60
East-West Image Geometry Correction Stage60
Vertical Deflection Stage60
Circuit Breaker60
Small Signal Part61
Control Part (AIO1, AIO2, CVB) - RUBAD61
Overview of Functions62
Main Computer62
Bus System62
Keypad Evaluation62
Control Section on the TV Board (COTV) - TVBAD63
LED Control63
Display Printed Board KB1D63
Clock IC63
Deck Electronics (DE) - RUBAD64
Deck Interface SAA 131064
Head Drum Motor Driver64
Interface to the Capstan Motor/Loading Motor Driver64
Audio (AF, AL, AP, AMP, IO, SF, ACO) - RUBAD, TVBAD, SFD65
Analog Interface to the AIO65
Audio In/Out65
Sound Processing and View Mode65
Dolby Decoding - APDOD66
Linear Audio Recording and Playback66
FM Audio Recording and Playback66
Receiver Part (TU1 TU2) - TVBAD, RUBAD67
Hifi Audio Interface to the Linear Audio67
Front End 1 (TV Tuner)67
Multi-Standard Sound Demodulator67
Single Standard Mono Intercarrier Front End to the TV68
Dual Standard Mono QSS Front End for the BG/DK and BG/I68
Multi-Standard Mono FM/AM QSS Front End for the TV Standards BG/I/L,L'68
Video In/Out (IO_1, TV, VS, HPAV) - RUBAD, TVBAD69
Video Signal Processing (VS, VSEC) - RUBAD71
Switchover Functions on the Signal Electronics IC LA7152771
Recording71
Luminance71
TV Signal Processing (TV) - TVBAD72
Playback72
Video Signal Processing72
Chroma PAL72
Chroma Signal Processing73
RGB Signal Processing73
TV Synchronization73
Supply Diagrams74
Electrical Settings79
Measuring Instruments79
Setting Instructions79
Settings80
Power Supply Unit (PS)80
Clock Setting80
Tuner 1 (TV)80
Tuner 281
Automatic Frequency Control81
AFC 2 Reference81
Automatic Gain Control AGC 281
Servo-System (DE)82
Luminance and Chrominance (VS, VSEC)82
Gap Position82
SECAM Recording Current82
Audio Part83
Studio Picture Control SPC83
Erase Frequency83
BIAS Magnetic Biasing Current83
TV and Picture Tube Settings84
Cut-Off84
Focus84
Audio Playback Level84
Horizontal Picture Position85
Vertical Picture Position, Picture Amplitude and Slope85
East/West Adjustments85
Adjusting the Whiteness86
East/West-Width86
East/West-Parabola86
East/West Corner Parabola86
Interconnection Wiring Diagram87
Block Diagrams89
Schematic Diagrams99
Variant List Tuner 1 - TV Board (TVBAD)155
Variant List Tuner 2 - Recorder Unit Board (RUBAD)156
Component Mapping TV Board (TVBAD)157
Waveform Photographs158
Exploded Views162
Set Parts List175

Philips 21PV320 - Service Manual

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