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- Unplug the power cord from the power outlet before disassembling this projector.
- Use correctly the supplied power cord and must ground it.
- It is advisable to use an isolation transformer in the AC power line before the service.
- Be careful not to touch the rotation part (cooling fan, etc.) of this projector when you service with the upper
case removed and the power supply turned ON.
- Observe the original lead dress during the service. If a short circuit is found, replace all the parts overheated
or damaged by the short circuit.
- After the service, all the protective devices such as insulation barriers, insulation papers, shields, and isolation
R-C combinations must be properly installed.
- After the service, check the leakage current to prevent the customer from getting an electric shock.
Safety precautions ........................................................................... III
Contents ...........................................................................................IV
Comparison List ................................................................................V
Introduction .....................................................................................1-1
1-2 Compatible Signals ..................................................................1-3
Disassembly Process .....................................................................2-1
2-2 Disassemble Lamp Module and Mesh Inlet ............................. 2-2
2-3 Disassemble Top Cover Module ..............................................2-3
2-4 Disassemble Keypad Board ..................................................... 2-7
2-5 Disassemble Main Board .........................................................2-9
2-6 Disassemble Shielding and IO Cover Module ....................... 2-13
2-7 Disassemble LAMP DRIVER and and POWER board .......... 2-14
2-8 Disassemble Speaker and AC Inlet Bracket .......................... 2-17
2-9 Disassemble ENGINE Module ............................................... 2-18
2-10 Disassemble DMD FAN and SYS FAN and Blower FAN ..... 2-20
2-11 Disassemble Bottom Module ................................................ 2-23
2-12 Repair Action ........................................................................ 2-25
Troubleshooting ..............................................................................3-1
3-2 Main Procedure ........................................................................3-2
3-8 Electronic Function Block Diagram ........................................ 3-11
3-9 Pin Assignment ...................................................................... 3-12
Function Test & Alignment Procedure ..........................................4-1
4-2 Test Inspection Procedure .......................................................4-2
4-3 Calibration ................................................................................4-3
4-4 Waveform download ................................................................4-4
4-5 Fan rotation check ...................................................................4-5
Firmware Upgrade ...........................................................................5-1
5-2: MCU Firmware Upgrade Procedure .......................................5-7
5-3: Network Firmware Upgrade Procedure ................................ 5-13
Exploded image & parts list......................................................SPL-1