Epson PowerLite 5000 Service Manual Page 41
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EPSON PowerLite 5000 Service Manual
2-11
Functional Outline
• IC600 and related circuits are backed up with +3.3 V which is provided from the power
supply. (If the AC cable is connected to the AC source, power supply provides the
+3.3 V for back-up bias even if RS-361 is turned off.)
• When the power is turned on, IC600 on the main board generates the reset signal and
initializes the circuit. The CPU reads the program from flash ROM and writes it into
SRAM. Then the CPU sets the functions based on the program and projects the initial
image.
• Three thermistors (LV Thermistor / Lamp Thermistor / PBS Thermistor) detect
temperature. If the temperature exceeds a predefined level, the thermistors send an
interrupt signal to IC600 and shut off the power supply.
• Computer analog or digital input signals are converted into analog signals first, then
converted to digital signals again by ADC. These display data written into the video
memory (SRAM).
• Analog output signals are transmitted in different ways for analog input and digital
input.
1. Digital RGB:
The digital image signals are output via the gate and driver board.
2. Analog RGB
The analog image signals are converted by the ADC and the D/A converter.
• The data is stored in the SRAM, then output for display to the video controller via the
CPU.
• Video input signals are transferred via the AU board and converted into digital signals
with the A/D converter. They are stored in the SRAM.
• The projector has a timer circuit that controls the operating time of the light source bulb
(lamp inner housing). Its operation is described below.
Table 2-5
Light source state Lamp monitor state
When the operating time of the light source
bulb (lamp inner housing) exceeds 1900
hours.
The lamp monitor continues to flash red and
orange for 5 minutes after it is turned on. (The
light source stays on.)
When operating time of the light source bulb
(lamp inner housing) exceeds 2000 hours.
The lamp monitor flashes green and orange.
(The light source goes off.)
When the light source bulb (lamp inner
housing) runs out before its expected end of
life.
The lamp monitor flashes red.
If you observe the conditions above, replace the light source bulb (lamp inner housing).
Then turn on the switch. The fuse in the lamp will melt and short out, so that the lamp timer
will be reset automatically.
- Service Manual 1
- PowerLite 5000 2
- VCCI COMPLIANCE STATEMENT 3
- REVISIONS 3
- COPYRIGHT INFORMATION 3
- TRADEMARK INFORMATION 3
- INTRODUCTION 4
- PRECAUTIONS 5
- Contents 7
- CHAPTER 4 TROUBLESHOOTING 9
- APPENDIX A 9
- 1.1 PRODUCT FEATURES 10
- 1.2 PARTS OF THE PROJECTOR 11
- Figure 1-3 12
- Figure 1-4 12
- Figure 1-5 13
- Figure 1-6 13
- Figure 1-8 14
- Figure 1-9 15
- 1.3 CONNECTIONS 16
- Power Book 18
- Table 1-1 18
- Video Devices 19
- Audio Devices 19
- 1.4 MAIN COMPONENTS 20
- FR board 21
- CN board 21
- Receptor boards 21
- Speakers 22
- Inlet unit 22
- Filter unit 22
- Power supply unit 23
- Lamp inner housing 23
- Control panel 23
- Optical engine 24
- Top side view 24
- Bottom side view 24
- 1.5 SPECIFICATIONS 25
- POWER SUPPLY 26
- 1.6 INTERFACE SPECIFICATIONS 27
- 1.6.5 S-Video 28
- 1.6.6 Video-In 29
- 1.6.7 Audio In L/R 29
- 1.6.8 Mouse / Com 1/2 30
- 2.1 HARDWARE 31
- Figure 2-2 33
- FC board 34
- Figure 2-3 34
- Figure 2-4 35
- 2.2 POWER SUPPLY UNIT 36
- Functional Outline 37
- Figure 2-7 38
- 2.3 MAIN BOARD 39
- • Lamp power 40
- • Backup Power 40
- 2.4 DRIVER BOARD 42
- Figure 2-11 44
- 2.5 CONTROL PANEL 45
- 2.6 AU BOARD 46
- 2.7 FR BOARD 48
- Figure 2-16 49
- 2.8 CN BOARD 50
- Figure 2-19 51
- Figure 2-20 51
- Figure 2-21 52
- 2.10 SPEAKER UNIT 53
- 2.11 LIGHT GUIDE BLOCK 54
- • Lens Arrays A and B 55
- 2.12 LAMP INNER HOUSING 56
- Light source lamp 57
- Fuse board (FU board) 58
- 2.13 SENSORS/SWITCHES 59
- 2.13.1 Filter Cover Switch 60
- 2.13.2 Interlock Switch 61
- 2.13.3 Safety Switch 61
- 2.13.5 LV Thermistor 62
- 2.13.4 Lamp Thermistor 62
- 2.13.6 PBS Thermistor 63
- 2.14 BOARD CONNECTIONS 64
- Figure 2-37 65
- Figure 2-38 65
- AC InIet 66
- Power Supply Connector 66
- Connector Board 66
- 3.1.1 Preparatory Procedures 67
- 3.1.4 Mechanical Adjustments 68
- Driver Board 69
- 3.1.6 Precautions 70
- Figure 3-1 71
- Figure 3-2 72
- Figure 3-3 72
- Figure 3-4 73
- Figure 3-5 74
- Figure 3-6 74
- Figure 3-7 75
- Figure 3-8 75
- Figure 3-9 76
- Figure 3-10 76
- Figure 3-11 77
- Figure 3-12 77
- Figure 3-13 78
- Figure 3-14 78
- Caution: 79
- 3.2.8 Removing the Main Board 80
- Figure 3-18 81
- 3.2.9 Removing the AU Board 82
- Figure 3-20 83
- Figure 3-21 84
- 3.2.11 Removing the FR Board 85
- Figure 3-24 86
- Figure 3-25 86
- Figure 3-26 87
- Figure 3-27 88
- Figure 3-28 88
- Figure 3-29 89
- Figure 3-30 90
- Figure 3-31 90
- Figure 3-32 91
- Figure 3-33 92
- Figure 3-34 92
- 3.2.20 Removing the CN Board 93
- Figure 3-37 94
- 3.2.22 Removing the FC Board 95
- Figure 4-1 97
- Figure 4-2 98
- Figure 4-3 99
- Power ON/OFF 100
- Continued from page 4-5 101
- Go to start 101
- Display/Picture 102
- Figure 4-7 103
- Audio Output 104
- Control Panel 105
- Remote Control 106
- Mouse/COM 107
- Figure 4-12 108
- A.1 Parts List 109
- A.2 Exploded Diagrams 112
- Figure A-2 113
- Figure A-3 114
- Figure A-4 115
- Figure A-5 116
- Figure A-6 117
- Figure A-7 118
- Figure A-8 119
- Figure A-10 120
- Figure A-11 121
- Figure A-12 122
- Figure A-13 123
- Figure A-14 124
- Figure A-15 126
- Figure A-16 127
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