Equipment information
Toshiba TLP411E Projector
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Model:
TLP411E
Date:
1996
Category:
Group:
Description:
LCD DATA PROJECTOR
Manual Type:
Service Manual
Pages:
84
Size:
688.58 Kbytes (705111 Bytes)
Language:
english
Revision:
Manual-ID:
336-9612
Date:
Quality:
Electronic document, no scan, very well readable.
Upload date:
2014 06 11
MD5:
c8f992394a551446e73a591589a8eb19
Downloads:
1051
Information
SECTION I
MAIN POWER SUPPLY
CIRCUIT ... 1-1
1. OUTLINE ... 1-2
1-1. Block Diagram
... 1-2
2. DESCRIPTION ABOUT
CIRCUIT OPERATION ... 1-2
2-1. Surge Absorber Circuit ... 1-2
2-2. Noise Filter Circuit
... 1-3
2-3. Rush Current Protection Circuit ... 1-3
2-4. Smoothing/Rectifying Circuit ... 1-3
2-5. Inverter Circuit (Flyback) ... 1-4
2-6. Primary Control Circuit ... 1-4
2-7. Secondary Rectification &
Smoothing Circuit ... 1-5
2-8. +6V Detection Circuit ... 1-5
2-9. +6V, +S6V, +15.5V Overvoltage
Protection Circuit ... 1-5
2-10. +6V, +S6V Over Current
Protection Circuit ... 1-6
2-11. Output ON/OFF Circuit ... 1-6
2-12. ON/OFF Control Circuit ... 1-6
SECTION II
LAMP HIGH VOLTAGE
POWER SUPPLY
CIRCUIT ... 2-1
1. LAMP HIGH VOLTAGE
POWER SUPPLY ... 2-2
SECTION III
OPTICAL SYSTEM ... 3-1
1. CONFIGURATION ... 3-2
SECTION IV
RGB DRIVE CIRCUIT ... 4-1
1. OUTLINE ... 4-2
2. CIRCUIT DESCRIPTION ... 4-2
2-1. Level Shifter (Q945 – Q953) ... 4-2
2-2. Gamma (g) Circuit ... 4-3
CONTENTS
2-3. Level Shifter Circuit
(Q965 – Q968, R1044) ... 4-4
2-4. Black Limiter (Q969, Q970) ... 4-4
2-5. Inverted Signal Amplifiers
(Q974 – Q981) ... 4-4
2-6. Switch Circuit
(Q982 μPD74HC4066A) ... 4-4
2-7. Sample & Hold Circuit ... 4-5
2-8. LCD Panel
... 4-7
SECTION V
MICROCOMPUTER ... 5-1
1. SYSTEM OUTLINE ... 5-2
2. SYSTEM MICROCOMPUTER ... 5-4
3. POWER SUPPLY RESET
PROCESS ... 5-5
4. NON-VOLATILE MEMORY
PROCESS ... 5-5
5. REMOTE CONTROL
RECEPTION PROCESS ... 5-6
6. RS-232C TRANSMIT/
RECEIVE PROCESS ... 5-6
7. STATUS READ PROCESS ... 5-7
8. STATUS DISPLAY PROCESS ... 5-7
9. ON-SCREEN DISPLAY
PROCESS ... 5-8
10. VIDEO MODE FETCH
PROCESS ... 5-8
11. VIDEO SYSTEM CONTROL
PROCESS ... 5-9
12. PANEL SYSTEM CONTROL
PROCESS ... 5-10
13. VARIOUS DISPLAY
MODES ... 5-11
14. APPLICABLE SIGNAL ... 5-12
15. RS-232C CONTROL
METHOD ... 5-13
16. RS-232C COMMAND LIST ... 5-13
SECTION VI
DIGITAL CIRCUIT ... 6-1
1. DIGITAL CIRCUIT
OPERATION ... 6-2
1-1. Display Mode
... 6-2
1-2. RGB Signal Input ... 6-3
1-3. NTSC Signal Input ... 6-4
1-4. PAL/SECAM Signal Input ... 6-4
2. CIRCUIT DESCRIPTION ... 6-5
2-1. Clamp Circuit
... 6-5
2-2. A/D Converter
... 6-5
2-3. Memory
... 6-7
2-4. PLD Circuit
... 6-9
2-5. D/A Converter
... 6-11
2-6. Memory Control and
Sync Process IC ... 6-13
2-7. PLL Circuit (1)
... 6-14
2-8. PLL Circuit (2)
... 6-15
2-9. Liquid Crystal Panel Timing
Generation Circuit ... 6-17
2-10. On-screen Character
Generation Circuit ... 6-23
SECTION VII
VIDEO SIGNAL PROCESS
CIRCUIT ... 7-1
1. OUTLINE ... 7-2
1-1. Circuit Configuration ... 7-2
1-2. Video Signal Demodulation Block ... 7-2
1-3. RGB Signal Amplification
Circuit Block ... 7-2
1-4. Audio Signal Amplification Block ... 7-2
2. INPUT/OUTPUT SIGNAL
Switch CIRCUIT ... 7-3
2-1. Audio/Video Signal Switch Circuit ... 7-3
2-2. Input Signals
... 7-3
3. VIDEO DEMODULATION
BLOCK ... 7-5
3-1. YC Separation Circuit ... 7-5
3-2. Video/Color Circuit ... 7-6
3-3. Luminance (Y) Signal Process Circuit ... 7-7
3-4. Color Signal Process Circuit ... 7-8
3-5. Picture Sharpness Correction Circuit ... 7-8
3-6. RGB Demodulation ... 7-9
3-7. Audio Circuit
... 7-11
4. RGB SIGNAL PROCESS
CIRCUIT ... 7-11
4-1. RGB Signal SW Section ... 7-11
4-2. Video/RGB Signal SW Section ... 7-12
4-3. RGB Signal Amplifier Section ... 7-12
4-4. Microcomputer Interface ... 7-13
SECTION VIII
CCD CAMERA CIRCUIT ... 8-1
1. OUTLINE ... 8-2
1-1. CCD and Drive/Sync Signal
Generation Circuit (SG) ... 8-2
1-2. Pre-amp Circuit (CDS) ... 8-2
1-3. Video Signal Process Circuit
(PRO, ENC, AWB) ... 8-2
1-4. Power Supply Circuit ... 8-2
SECTION IX
FLUORESCENT LAMP
INVERTER CIRCUIT ... 9-1
1. OPERATING DESCRIPTION ... 9-2
2. TROUBLESHOOTING ... 9-3
2-1. Fluorescent does not turn on ... 9-3
3. CIRCUIT DIAGRAM ... 9-4