Sanyo PDG-DWT50L - WXGA DLP Projector User manual

Multimedia Projector
SERVICE MANUAL
PRODUCT CODE
1 122 412 20 (KW3AL)
1 122 413 20 (LW3AL)
Original Version
REFERENCE NO. SM5110921-00
FILE NO.
Model No. PDG-DWT50L
U.S.A, Canada,
Europe, U.K, Asia
Chassis No. KW3-DWT50L00
Match the Chassis No. on the unit's back cover with the
Chassis No. in the Service Manual.
If the Original Version Service Manual Chassis No. does
not match the unit’s, additional Service Literature is re-
quired. You must refer to “Notices” to the Original Service
Manual prior to servicing the unit.

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CONTENTS
1. COMPLIANCE OF SAFE REPAIR .........................................................…………………………………….……5
1-1. Caution during disassembling and assembling ..................………………………………………….……5
1-2. Lamp .......... ..............................................................……………………………………………………….….5
1-3. Lens ............................................................………………………………………………………………….….5
2. SPECIFICATIONS .........................................................……………………………………………………………6
2-1. Optical Specifications ……………………………………………………………………………………………6
2-2. Electrical Specifications …………………………………………………………………………………………7
2-3. Mechanical Specifications …………………………………………………………………………………...….8
2-4. Environmental Considerations ……………………………………………………………………………..….8
2-5. Regulations …………………………………………………………………………………………………..……8
2-6. Block Diagram ………………………………………………………………..……………………………..……9
2-7. Explanation of the block diagrams …………………………………………...………………………………10
2-8. Wire Location ………………………………………………………………..….……………………………….12
3. TROUBLE SHOOTING ……………………………………………………………………………….………………13
3-1. Operation check ………………………………………………………..……………………………………….13
3-2. Main Board check ……………………………………………………………………………………………….14
3-3. LED State Indications ………………………………………………………….………………………………..16
4. DISASSEMBLY AND ASSEMBLY ………………………………………….……………………………………….17
5. ADJUSTMENT………………………………………………………………………………………………………….44
5-1. Step of Into Service mode………………………………………….…………………………..……………….44
5-2. Calibrate VGA (1024 x 768 @ 60Hz)………….....................................................................……………..45
5-3. Calibrate YUV…………………………………………………………………………………….……………….46
5-4. Calibrate Video……………………………………………………………………………………………….…..47
5-5. Color Wheel Index Adjustment……………………………………………………………….………………..50
5-6. Focus Adjustment………………………………………………………………………………………………..52
6. SECURITY NOTICE…………………………………………………………………………………………………...59
6-1. Preventing the Unauthorized Use of the Projector……………………………..………………………….59
6-2. Unlocking the Projector…………………………………………………………………………………..…….61
6-3. Security Function Notice……………………………………………………………………………………….61
7. Circuit Protections …………………………………………………………………………………………………...62
7-1. Fuse ………………………………………………………………………………………………………………..62
7-2 Thermostat ………………………………………………………………………………………………………...63
7-3 Bimetal ……………………………………………………………………………………………………………..64

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7-4 Lamp Interlock Switch …………………………………………………………………………………………..65
7-5 Lamp Door Interlock Switch …………………………………………………………………………….……..66
8. Maintenance …………………………………………………………………………………………………………...67
8-1 Cleaning the projector …………………………………………………………………………………………..67
8-2 Replacing Consumable Parts ………………………………………………………………………………….71
9. Factory Preset Display Modes ……………………………………………………………………………………..79
10. Required adjustments when the parts replaced ………………………………..……….….…………………81
11. Spare part list………..….…………….…..……………………………………………………….…………………82

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1.COMPLIANCE OF SAFE REPAIR
Be sure to read this Service Manual before providing services. In the projector, full consideration is taken
to ensure the safety for a fire, electric shock, injury, harmful radiation, and substance. Therefore, observe the
notice described in this Service Manual so that the safety is kept when providing services. Moreover, be sure to
observe the notice described in the Instruction Manual.
Pay attention to the following during service inspection.
1-1. Cautions during disassembling and assembling
1.This equipment contains parts under high voltage. When making repairs, etc. Be sure to pull out the power
plug beforehand to insure safety.
2. Parts may be very hot immediately after use. Make sure the equipment has cooled off sufficiently before
carrying out repairs.
3. Make sure that parts and screws and wiring, etc. are returned to their original positions. Tube, tape and
other insulation materials have been used for safety reasons. The internal wiring has been designed to
avoid direct contact with hot parts or parts under high voltage when using clamps or other tools.
4. The parts used in this device have special safety features such as flame-resistance and anti-voltage
properties. When replacing parts, always use parts supplied from the factory.
5. After finishing operations make sure that all parts and wires have been returned to their original position
and that there has been no deterioration of the area around the location that was worked on.
6. Be sure to use an earth band (wrist band) during repair and inspection.
1-2. Lamp
During current conduction, the lamp is in the high-temperature state. In this case, pay careful attention
because a high voltage is used. When replacing a lamp, replace it after confirming that the lamp has gotten
cold sufficiently.
1-3. Lens
Do not look through a lens during projection. This damages your eyes.

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2. SPECIFICATIONS
This section provides technical information about the projector's performance.
2-1 Optical Specifications
Item Description
Projection system Single DLP®chip, 4 segment color wheel
Resolution 1280x768 pixels* (up to UXGA 1600*1200 @ 60 Hz) <170MHz>
Lamp 260 W AC (230 W in Eco mode), Dual lamp system
Image size (diagonal) 50" - 200" / 1.27m - 5.08m (LNS-W41)
40" - 500" / 1.02m – 12.7m (LNS-W40, LNS-S40, LNS-T40, LNS-T41)
Lens options
LNS-W41: Power focus, throw ratio 0.77:1, F2.0, f=11.4 mm
LNS-W40: Power zoom and focus,
throw ratio 1.33-1.79:1, F1.8-2.3, f=19.3-25.8 mm
LNS-S40: Power zoom and focus, throw ratio 1.78-2.35:1, F1.7-1.9, f=26-34 mm
LNS-T40: Power zoom and focus, throw ratio 2.22-4.43:1, F2.1-2.9, f=32-63 mm
LNS-T41: Power zoom and focus,
throw ratio 4.43-8.3:1, F2.2-3.1, f=63.5-117.4 mm
Lens shift Vertical + 0.5V, Horizontal +/- 0.1H (LNS-W40, LNS-S40, LNS-T40, LNS-T41)
*Effective pixels are more than 99.99%

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2-2 Electrical Specifications
Item Description
Inputs
1 Analog RGB (Mini D-Sub 15P), 1 Analog RGB R/Cr, G/Y, B/Cb, H, V
(BNC x 5), 1 Digital RGB (DVI-D 24P), 1 Component Y, Cb/Pb, Cr/Pr
(RCA x 3), 1 Component (Mini D-Sub 15P) shared with COMPUTER 1
IN, 1 S-Video (Mini DIN 4P), 1 Video, 3 Stereo Mini Audio, 2
(L/R) RCA Audio, 1 Remote Control (Stereo Mini)
Outputs 1 RGB (Mini D-Sub 15P), 1 Stereo Mini Audio, 1 Screen Trigger
Control 1 PC Control Port (D-Sub 9P), 1 GPIO (Mini D-sub 15P)
USB Port 1 B Type (for Service)
LAN Port RJ-45
Video Compatibility NTSC, NTSC4.43, PAL, PAL-60/N/M/B/G/H/I), SECAM, HDTV: 1080i, 720p,
SDTV: 576p, 576i, 480p, 480i
Scan Rate Horizontal: 15 kHz, 31 to 90 kHz (RGB: 31 kHz or over) Vertical: 50 Hz to 85 Hz
Video Bandwidth RGB: 100 MHz (-3dB)
Color Reproduction 16.7 million colors simultaneously, Full color
Horizontal Resolution NTSC / NTSC4.43 / PAL / PAL-M / PAL-N / PAL60: 540 TV lines
SECAM: 300 TV lines
RGB: 1024 dots (H) x 768 dots (V)
External Control RS232, IR, LAN, GPIO
Sync Compatibility Separate Sync / Composite Sync / Sync on G
Built-in Speakers 3W x 2
Power Requirement 100 - 240V AC, 50/60Hz
Input Current 7.7A
Power Consumption
655W in Dual Lamp Normal mode / 580W in Dual Lamp Eco mode
350W in Single Lamp Normal mode / 315W in Single Lamp Eco mode
< 30W in Standby mode Normal
< 5W in Standby mode Power saving

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2-3 Mechanical Specifications
Item Description
Dimensions
19.9" (W) x 7.6" (H) x 15.2" (D)
505 mm (W) x 192 mm (H) x 385 mm (D)
(not including protrusions)
Weight 36.4 lbs/16.3 kg
2-4 Environmental Considerations
Item Description
Operational Temperatures 41° to 104°F / 5° to 40°C, 10% to 90% humidity (non-condensing)
Storage Temperatures 14° to 140°F (-10° to 60°C), 5% to 90% humidity (non-condensing)
2-5 Regulations
UL/C-UL Approved (UL 60950-1, CSA 60950-1)
S-UL,PSE(J60950)
CCC(GB4943,GB9254,GB17625.1)
EK(K60950-1)
CB(IEC60950-1)(Deviation:Semko)edition.1
Meets FCC part15 subpartB Class B,IECS-003 classB requirements
z(EN55022, EN55024, EN61000-3-2, EN61000-3-3)
zC-TICK(AS/NZS CISPR.22 Class B)
zVCCI Class B,JIS C 61000-2-3

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2-6 Block Diagram
0.65’’ LVDS WXGA DMD

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2-7 Explanation of the block diagrams.
2-7-1 Input signal processing
1-1.RGB & Component & DVI input system
The RGB(5BNC) and COMPONENT input signals are led through the multiplexer
circuit. After these signals and DVI signal have been converted into 10-bit digital signals
of RGB each at the A/D converter (U201) incorporated in the VIDEO amplifier, the
resultant signals are output to the scaler (U400).
1-2.Video input system
The VIDEO input and S-VIDEO input signals are decoded into the Y/CbCr (brightness
and chroma) signals at the video decoder (U702). The decoded signals are further
converted into 10-bit digital signals of Y/ CbCr, and then output to the scaler (U400).
2-7-2 Digital video signal processing
2-1.Scaler (U400)
• The Y/CbCr signals are processed for picture quality improvement and matrix
processing at the Scaler circuit, and then converted into the RGB signals.
• The RGB and VIDEO input signals are switched over at the selector. After passing
through the signal adjusting circuit of color space processing, auto-adjustment, etc.,
these signals are written in the RLDRAM.
• The video signals called up from the RLDRAM, pass through the definition converter
circuit, ON-screen display, error diffusion circuit for DLP, V-T compensator circuit, and
such signal processing circuits, and are then output to the optical engine unit (DLP
formatter board).
• In the frame memory consisting of the RLDRAM and the FIFO located in the scaler,
frequency conversion is conducted for the WRITE system and the READ system.
Therefore, the video signals can be output to the optical engine unit (DLP formatter
board) always at the constant timing.
• According to the conditions of projector installation, the trapezoidal distortion
compensation of the video signals are also effected through the frame memory.