Related Manuals for Toshiba TLP510E
Summary of Contents for Toshiba TLP510E
- Page 1 TECHNICAL TRAINING MANUAL 3 LCD DATA PROJECTOR FILE NO. 336-9707 TLP511U TLP510U TLP511E TLP510E PRINTED IN JAPAN, Nov., 1997...
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Page 2: Table Of Contents
1. MAIN POWER SUPPLY CIRCUIT ... 1-1 1-1. Description ... 1-1 1-2. Output Control ... 1-1 1-3. Voltage Switching ... 1-1 1-4. Over-voltage Protection ... 1-1 1-5. Over-current Protection ... 1-2 1-6. Overheat Protection ... 1-2 2. LAMP POWER SUPPLY CIRCUIT (LAMP DRIVER) ... -
Page 3: Main Power Supply Circuit
1. MAIN POWER SUPPLY CIRCUIT 1-1. Description This power supply boosts up at boost-up-converter just after bridge-rectifying AC input voltage, supplies the voltage smoothed to DC 350V to the lamp output. Then current resonance DC-DC converter which uses the DC 350V as an input converts the voltage and supplies S6V, +6V, +10V, +13V, +15.5V and –12V. -
Page 4: Over-Current Protection
1-5. Over-current Protection In S6V and +6V lines, the voltage drop owing to the current flowing in L203 is detected by pins 5 and 6 of IC401, when the total current amount exceeds 8A, pin 7 develops high and the voltage biasses the base voltage of transistor Q401 passing through the zener diode D402 and diode D401. -
Page 5: Lamp Power Supply Circuit (Lamp Driver)
2. LAMP POWER SUPPLY CIRCUIT (LAMP DRIVER) 2-1. Configuration The lamp power supply cicrcuit receives a DC220 to 390V (primary side) from the system power supply and provides a AC voltage (70 to 100V the lamp) to turn on the lamp. Fig. 2-1-1 shows the block diagram. -
Page 6: Optical System
3. OPTICAL SYSTEM 3-1. Configuration Name Light source of the optical system. AC lighting system 120W, arc length 1.3 mm. As the arc length is shorter than the conventional metal halide lamp, the light source UHP lamp operates as an ideal light point source and this improves the light convergence factor. Lamp Also, the color temperature gets higher and this allows to reproduce more natural unit... - Page 7 XGA 1.3 inch 3 plates system (120W) Fig. 3-1-1 Optical configuration diagram...
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Page 8: Drive Circuit
4. R.G.B. DRIVE CIRCUIT 4-1. Outline The outline of RGB drive circuit is described below using the G process of the RGB drive circuit as an example. Odd number pixel memory DAC1 Even number DAC2 pixel memory Frame inverted Digital PC board In the panel, 1024 pixels are arranged in a horizontal direction and 768 lines of the pixels are in a vertical as shown in Fig. - Page 9 The signal as shown in Fig. 4-1-1 is separated into the odd and even pixels at the digital PC board. After the signal process is carried out in the drive PC board, the odd and even pixel signals are synthesized to decomposite the signal on the panel.
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Page 10: Operation Description
4-2. Operation Description The video signal of the odd number pixel (even number pixel) is sent to Q501 (Q503) base and supplied to pin 16 of Q502 (Q504), LM1201M. The signal is clamped at pin 16 and the pedestal voltage is adjusted at pin 6 after the DC level is stabilized and then AC level is adjusted at pin 3. - Page 11 Table 4-2-2 Input terminal function description Name Start pulse input terminal of X shift register composing X driver. CLX, CLX Transfer clock input terminal X shift register composing X driver DIRX, DIRX X driver driving direction switch input terminal (DIRX = H R shift, DIRX = L L shift) ENB1 –...
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Page 12: Microprocessor
5. MICROPROCESSOR 5-1. System Outline The system microprocessor has features as shown below. In considering easy maintenance for specification modification, etc., the program content is written in the built-in non-volatile memory. The program is also developed in considering use of structured notation, parts modularity, and multi filling system. - Page 13 PL001 HC125 PL001 QL012 HC125 PL003 QL005 HC14 PL006 QL003 QL004 PQ20VZ1U RN5VD27A PL002 PL010 QL002 HD64F3337YF16 16 17 25 26 27 28 CAT24C16J QL006 Fig. 5-1-1 System block diagram PL004 QL010 HC165 HC541 QL007 DRIVE SENSOR PL009...
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Page 14: System Microprocessor
5-2. System Microprocessor The system microprocessor QL002 employs an 8 bit micro-controller (HD64F3337YF16). In this system microprocessor, a program area is pro- vided inside the non-volatile memory. Table 5-2-1 Terminal functions of the system microprocessor Pin No. Name Function Reset input XTAL Clock input for oscillation EXTAL... -
Page 15: Power Supply Reset Process
5-3. Power Supply Reset Process In the power supply reset process, power supply reset IC (RN5VD27A), QL004 is employed. The reset IC,QL004, develops the reset signal when the power supply voltage for the microprocessor varies and becomes lower than the specified voltage, and sends the signal to the reset terminal of the system microprocessor (QL002). -
Page 16: Status Display Process
5-8. Status Display Process In the status display process, two-color lighting LEDs of DL037, DL038 and DL039 turn ON for each kind of status shown in the table below by using LED0 to LED5 terminal output of the microprocessor. Table 5-8-1 Contents of the status display signals and the logic LAMP TEMP Green... -
Page 17: Video System Control Process
5-10. Video System Control Process In the video system control process, control signals are supplied to various video system process ICs shown in the table below. Table 5-10-1 shows the I each kind of video system. Table 5-10-1 I Part No. Type name CXA1855Q QV001... -
Page 18: Drive System Control Process
5-12. Drive System Control Process In the drive system control process, the control signal is supplied to each kind of drive system process ICs shown in the the table below. Table 5-12-1 Each kind of the drive system IC control Part No. -
Page 19: Applicable Signal
5-14. Applicable Signal Various kinds of signals are used as the applicable signals in the preset mode (standard value) as shown in Table 5-14-1. For the signals not fit to the preset modes, a user mode is provided. In the preset modes, the applicable signals are based on the VESA standard, so the sample frequency (CLOCK adjustment in the panel menu) is not used, but the adjustment is allowed only in the user mode. -
Page 20: Rs-232C Control Method
5-15. RS-232C Control Method Signals are connected to the RS-232C connector in a straight format as shown in Table 5-15-1 RS-232C connection signals. This is because a crossing connec- tion is provided inside the unit. Communication condi- tions are set to meet the conditions given in Table 5-15-2. Table 5-15-3 shows the command list of RS-232C. - Page 21 Item Command Normal status Power supply ON Power supply OFF Video input RGB input Camera input Volume UP Volume DOWN Display ON Display OFF All Mute ON All Mute OFF Audio Mute ON Audio Mute OFF Freeze ON Freeze OFF Resize ON Resize OFF Camera (for TLP511)
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Page 22: Digital Circuit
6. DIGITAL CIRCUIT 6-1. Outline A Configuration of digital circuit is shown in Fig. 6-1-1. The functions of digital circuit are described on the following pages. QX201 R signal CXA3026Q (2.0V - 4.0V) (A/D CONV.) G signal (2.0V - 4.0V) B signal (2.0V - 4.0V) CLK (PECL) - Page 23 6-1-1. PLL Circuit The PLL circuit develops the clock signal synchronized with the horizontal sync signal, using the horizontal sync signal entered. For RGB signals, a highly stable CXA3106 (QX028) is used. For video signal, a highly traceable TLC2932 (QX029) is used. 6-1-2.
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Page 24: Each Ic Description
6-2. Each IC Description 6-2-1. PLL IC CXA3106Q (QX028) for RGB Signals A configuration of CXA3106Q is shown in Fig. 6-2-1. The PLL IC of CXA3106Q is an IC with high perfor- mance and low jitter, and can generate the clock signal synchronized with the horizontal sync signal of max. -
Page 25: Circuit
6-2-2. PLL IC TLC2932 (QX029) for Video Signal The PLL IC of TLC2932 is composed of a phase comparator and a VCO. As a frequency dividing circuit is not built in, so the IC works as a PLL circuit by connect- ing to the external VCO terminal of QX028 and using the frequency dividing circuit of QX028. - Page 26 6 bits 6 bits 6 bits 6 bits (ECL) DELAY (TTL) (ECL) NRSET (TTL) 8 bits 8 bits 8 bits SELECTOR SELECT Fig. 6-2-4 (LSB) P1D0 P1D1 P1D2 P1D3 P1D4 P1D5 P1D6 P1D7 (MSB) (LSB) P2D0 P2D1 P2D2 P2D3 P2D4 P2D5 P2D6 P2D7...
- Page 27 6-2-6. Picture Size of View Conversion IC T-FORC (QX204, QX404, QX604) A configuration of T-FORC is shown in Fig. 6-2-5. The T-FORC is a newly developed picture size conversion IC. By using the IC, smooth picture enlargement and reduction, and format conversion will be made. Also, a gamma correction circuit is built in the IC.
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Page 28: Circuit Component
7. VIDEO CIRCUIT 7-1. Circuit Component The video circuit performs selection of input signals, video signal (NTSC, PAL, SECAM) demodulation to RGB signals, RGB input signal amplification and audio signal amplification. Fig. 7-1-1 shows the block diagram. 7-1-1. Input Signal SW Section <Video input section>... - Page 29 Fig. 7-1-1 Block diagram...
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Page 30: Input Signal Switch Section
7-2. Input Signal Switch Section The signal SW section works as a circuit to supply the signal to the signal process section in the next stage and each output terminal by switching the signal entered (video, audio). Each input signal is sent to QV001 (CXA1855Q) as shown in Fig. - Page 31 6 dB 6 dB 0 dB 0 dB 6 dB 6 dB 6 dB 0 dB 0 dB 6 dB 6 dB 6 dB 6 dB BIAS 6 dB 6 dB 6 dB 6 dB 6 dB 6 dB Fig. 7-2-2 Internal block diagram of CXA1855Q VOUT1 YIN1 YOUT1...
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Page 32: Video Demodulation Block
7-3. Video Demodulation Block 7-3-1. Y/C Separation Circuit This circuit separates Y and C signals from a composite video signal. Fig. 7-3-1 shows the pin configuration of TC9090AN and Fig. 7-3-2 shows the block diagram. The composite video signal enters pin 3. A fsc (3.58/ 4.43 MHz) developed from the video/color IC enters pin 19 and is converted into a 4fsc of the drive clock frequency inside the IC. - Page 33 7-3-2. Video/Color Circuit The video/color circuit consists of two ICs, QV005 (TDA9141: NTSC/PAL/SECAM DECODER), QV006 (TDA4665T: BASE BAND DELAY LINE), and supports each system of NTSC, PAL and SECAM. Color difference signal Color difference signal 12 11 16 14 TDA4665T (1H DL IC) Sand castle pulse TDA9141...
- Page 34 TDA9141 has two input terminals for the composite video/Y signal (pin 25) and C signal (pin 26), and each of the signals is automatically identified through I BUS control. MED849 N.C. GND2 I.C. TDA4665 SAND N.C. I.C. I.C. Fig. 7-3-6 Pin configuration of TDA4665T SIGNAL ±...
- Page 35 7-3-4. Color Signal Process Circuit The color signal is level adjusted in the ACC (automatic color control) circuit, corrected in passing through a band pass circuit in the NTSC/PAL system, or a bell filter correction is carried out in the SECAM system, and then enters the color demodulation circuit.
- Page 36 Sand castle pulse SAND CASTLE PULSE C • BUS DETECTOR BK.H+V BLACK LEVEL CLAMP 100 nF BLACK LEVEL CLAMP 100 nF 100 nF -(R-Y) -(B-Y) 7-3-6. RGB Demodulation The demodulation from Y and color difference signals to RGB signals is carried out by QV008, TDA4780. Fig. 7- 3-10 shows the pin configuration of TDA4780 and Fig.
- Page 37 Name Function High speed switch 2 input Red input 2 Green input 2 Blue input 2 Power supply voltage –(B–Y) Color difference input – (B–Y) –(R–Y) Color difference input – (R–Y) Luminance input Red input 1 Green input 1 Blue input 1 High speed switch 1 input Sandcastle pulse input FSW1...
- Page 38 7-3-7. Audio Circuit Fig. 7-3-12 shows the audio circuit block diagram. Signal path from the QV001 to the LINE OUT terminal is: QV001 ® transistor buffer ® LINE OUT terminal. Signal path from the QV001 to the speaker is as follows. The audio signal developed from the QV001 becomes one signal with its L and R signal components mixed.
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Page 39: Rgb Signal Amplification Section
7-4. RGB Signal Amplification Section HD (CS) and VD signals are also switched in the same way as described above. This IC provides the exclusive 7-4-1. RGB Signal Switch Circuit output terminal for SYNC/G. The RGB input signals and the video signal demodu- The RGB signals developed enter the RGB amplification lated into RGB signals are switched by QB011 (Analog circuit via buffers, and the HD (CS), VD, SYNC/G signals... - Page 40 The sync signal process circuit is applicable to the HD, VD, CS (composite sync), SYNC/G signals. HD (CS), VD and G signals developed from QB011 enter the sync separation IC (QB012: M52347FP). The sync separation priority of the sync separation IC is; HD, VD, CS and SYNC ON G in this order.
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Page 41: Microprocessor Interface
7-5. Microprocessor Interface The peripheral block diagram of the microprocessor shows in Fig. 7-5-1. All kinds of control such as signal SW, etc. are carried out by the I C of microprocessor. The level control of RGB signal process IC (QB024: M52320SP) and the sync polarity information of the sync process IC (QB012: M52347FP) are carried out in QB025 (CXA1315M). - Page 42 QB012 (M52347FP) Input status Pin 6: HD. COMP Pin 8: VD HD. COMP. (POS.) HD. COMP. (POS.) VD (POS.) HD. COMP. (POS.) VD (NEG.) HD. COMP. (NEG.) HD. COMP. (NEG.) VD (POS.) HD. HD. COMP. VD (NEG.) (NEG.) VD (POS.) VD (NEG.) QB012 (M52347FP) output terminal Table 7-5-1...
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Page 43: Ccd Camera Circuit (For Tlp511)
8. CCD CAMERA CIRCUIT (For TLP511) 8-1. Outline The camera section of the unit employs the color board camera with 3 times zoom lens. The camera video circuit is assembled in one PC board and composed of the CCD and drive circuit, pre-amp and AD converting circuit (CDS, AGC and AD), video signal process circuit (DSP, MICON) and power supply circuit. - Page 44 Fig. 8-1-1 CCD camera circuit block diagram...
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Page 45: Fluorescent Lamp Inverter Circuit (For Tlp511)
9. FLUORESCENT LAMP INVERTER CIRCUIT (For TLP511) 9-1. Operating Description The base current at start-up passes through QI002, RI003, RI004, RI009 and then flows into the base of QI003. QI002 works as a ON/OFF switch for start-up operation and turns ON when the base voltage develops “L”. -
Page 46: Troubleshooting
CI005 and CI006 are capacitors to stabilize the fluores- cent lamp discharging current. After the discharging starts, CI005 and CI006 limit the flow of the current with the reactance (X = 1/wc) of CI005 and CI006. Before the fluorescent lamp turns on, the collector pulse of QI007 is 70 –... - Page 47 NATIONAL SERVICE DIVISION 1420-B TOSHIBA DRIVE LEBANON, TN 37087...