Sanyo PLC-XP50 User manual

Multimedia Projector
SERVICE MANUAL
(SUPPLEMENT)
PRODUCT CODE
1 122 187 00 (MS3AA)
1 122 187 20 (MS3AM)
1 122 188 00 (PS3AA)
1 122 188 20 (PS3AM)
1 122 188 02 (PS3CA)
1 122 188 22 (PS3CM)
Original Version
REFERENCE NO. SS5110575
FILE NO.
Model No. PLC-XP50
PLC-XP50L
U.S.A., Canada,
Europe, Asia, Africa
PLC-XP50
Chassis No. MS3-XP5000
MS3-XP50L00
NOTE: 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 required.You must refer to
“Notices” to the Original Service
Manual prior to servicing the unit.
Note:
Model PLC-XP50L does not provide projection lens.
FILE WITH ORIGINAL SERVICE MANUAL (SM5110500)
- NOTE -
Any information not contained in this manual will be found in the original model's service manual
SM5110500-00 for models PLC-XP55 and PLC-XP55L.

2
■Contents
■Specifications __________________________________________________ 3
■Optical parts disassemblies ________________________________________ 4
■Optical adjustments ______________________________________________ 5
●Contrast adjustment ________________________________________ 5
■Adjustments after parts replacement ________________________________ 6
■Electric adjustments____________________________________________ 7-24
●Circuit adjustments ______________________________________ 7-11
●Service adjustment data table______________________________ 12-23
●Test points and locations ____________________________________ 24
■Chassis block diagrams ________________________________________ 25-28
■Power supply lines ______________________________________________ 29
■Troubleshooting ________________________________________________ 27
●No picture ________________________________________________ 27
■Control port functions ____________________________________________ 30
■Waveforms ____________________________________________________ 31
■IC block diagrams ______________________________________________ 32
■Service parts lists ____________________________________________ 33-71
●Electrical parts list ______________________________________ 33-65
●Mechanical parts list ____________________________________ 66-67
●Optical parts list ________________________________________ 68-71
Drawings & Diagrams ______________________________________ A1-A17
■Parts description and reading in schematic diagram ____________________ A2
■Schematic diagrams ________________________________________ A3-A10
■Printed wiring board diagrams ________________________________ A11-A16
■Pins description of ICs, transistors, diodes __________________________ A17
- NOTE -
Any information not contained in this manual will be found in the original model's service manual
SM5110500-00 for models PLC-XP55 and PLC-XP55L.
MAJOR CHANGES as below:
- LCD Panels and LCD driving circuit
- Projection Lens
- Optical parts

-3-
■Specifications
●The specifications are subject to change without notice.
This symbol on the nameplate means the product is Listed by Underwriters
Laboratories Inc. It is designed and manufactured to meet rigid U.L. safety stan-
dards against risk of fire, casualty and electrical hazards.
Projector Type Multi-media Projector
Dimensions (W x H x D) 12.6” x 6.6” x 16.8” (319mm x 168mm x 429.5mm)
Net Weight 19.2 lbs (8.7 kg) (PLC-XP50),
16.3 lbs (7.4 kg) (PLC-XP50L)
LCD Panel System 1.3” TFT Active Matrix type, 3 panels
Panel Resolution 1024 x 768 dots
Number of Pixels 2,359,296 (1024 x 768 x 3 panels)
Color System PAL, SECAM, NTSC, NTSC4.43, PAL-M and PAL-N
High Definition TV SIgnals 480i, 480p, 575i, 575p, 720p, 1035i and 1080i
Scanning Frequency H-sync. 15 ~ 100kHz, V-sync. 50 ~ 100Hz
Projection Lens F 1.8 ~2.1 lens with f=48.4mm ~ 62.8mm motor zoom and focus (PLC-XP50)
Throw Distance 4.6’ ~ 47.3’ (1.4m ~ 14.4m) (PLC-XP50)
Motorized Lens Shift Up and Down
Projection Image Size (Diagonal) Adjustable from 31” to 400”
Horizontal Resolution 800 TV lines (HDTV)
Projection Lamp 300 watt type
Input 1/Monitor Output Jacks DVI Terminal (Digital) HDCP Compatible, HDB 15-pin Terminal (Analog)
and Stereo Mini Type Jack (Audio)
Input 2 Jacks BNC Type x 5 (G or VIDEO/Y, B or Cb/Pb, R or Cr/Pr, H and V),
Stereo Mini Type Jack (Audio)
Input 3 Jacks RCA Type x 3 (VIDEO/Y, Cb/Pb, Cr/Pr), RCA Type x 2 (Audio R and L)
and DIN 4-pin (S-Video)
Other Jacks DIN 8-pin (Control port), USB port (Series B receptacle),
Wired Remote Jack and PJ-Net Organizer Connector
Built-in Speakers INT. SP. Stereo (R and L), 2 watts RMS (T.H.D. 10%)
Feet Adjustment 0˚ to 10.5˚
Voltage and AC 100 ~ 120V (5.0A Max. Ampere), 50/60Hz (The U.S.A and Canada)
Power Consumption AC 200 ~ 240V (2.5A Max. Ampere), 50/60Hz (Continental Europe and The U.K.)
Operating Temperature 41 ˚F ~ 95 ˚F (5˚C ~ 35˚C)
Storage Temperature 14 ˚F ~ 140 ˚F (-10˚C ~ 60˚C)
Remote Control Transmitters Wireless/Wired Remote Control, batteries AA, UM3 or R06 Type x 2
The CE Mark is a Directive conformity mark of the European Community (EC).

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■Optical Parts Disassemblies
1Remove each hex screw and pull the Polarized Glass-In ass’y upward.
2Remove a stopper and take the glass off upward.
Optical Filter
Polarized Grass
1AV4Z15***
Part No.
Film side
Polarized Glass-In and Optical Filter-In(WV) removal
Fig.1-1Fig.1-2
* Following assemblies differ from previous assemblies for chassis No. MR3-XP5500 others are the same;
- The optical filters has been added.
Polarized Grass
1AV4Z15***
Part No.
Film side
Fig.1-3
RED & GREEN
BLUE
BLUE
RED
GREEN

-5-
Optical Filter(WV)
Optical Filter(WV)
Polarized Glass
Polarized Glass
Fig.1-1
Polarized glass
mounting base
■Optical Adjustments
A
Before taking optical adjustments below, remove the Cabinet Top and Main Board following to the “Mechanical
Disassemblies”
Adjustments require a 2.0mm hex wrench and a slot screwdriver.
Note: Do not disconnect connectors K8L, K8X, K8D, K8G and K8E on the main board, because the projector can
not turn on due to operate the power failure protection.
Fig.1-2
B
Fig.1-3
C
[Before Adjustment]
- Input a 100% of black raster signal.
[R/G/B-CONTRAST ADJUSTMENT]
1Loosen a screw A(Fig.1-1) on the polarized glass mounting base which
you intend to adjust.
2Turn the polarized glass mounting base with knob Bas shown in Fig.1-2
to obtain the darkest brightness on the screen. (The polarized glass and
optical filter move together.)
3Turn the optical filter mounting base with knob Cas shown in Fig.1-3 to
obtain the black color uniformity on the screen.(Move only the optical filter.)
4Tighten the screw Ato fix the polarized glass mounting base.
Repeat steps 1 to 4 for remaining R, G or B contrast adjustment.
Note : Blue contrast adjustment
The 3rd step may be ignored because of no optical filter(WV).
Contrast adjustment
* Following adjustment differs from previous adjustment for chassis No. MR3-XP5500 others are the same;
- Contrast adjustment

-6-
● :Adjustment necessary ❍ :Check necessary
■Adjustments after Parts Replacement
Condenser lens adjustment ❍●
Relay lens adjustment ❍●
Contrast Adjustment
R-Contrast adjustment ●
G-Contrast adjustment ●
B-Contrast adjustment ●
Output voltage adjustment ❍
+16 V adjustment ❍
Fan output voltage adjustment ●●
NRS adjustment ●
Video center adjustment ●
PC black level adjustment ●
PC pedestal adjustment ●
PC gain adjustment ●
PC signal offset adjustment ●
Video A/D reference voltage top & bottom adj. ●
Video pedestal adjustment ●
Video gain adjustment ●
Video signal offset adjustment ●
Component pedestal adjustment ●
Component A/D reference voltage top adjustment ●
Component gain adjustment ●
RGB pedestal adjustment ●
RGB A/D reference voltage top adjustment ●
RGB gain adjustment ●
Common center adjustment ●●
PC white balance adjustment ❍❍
Video white balance adjustment ❍❍
Disassembly / Replaced Parts
LCD/
Prism
Ass’y
Condenser
Lens
Polarized glass
RGB
Optical Adjustments
Electrical Adjustments
Sub
Power
Board
Main
Board
Relay
Lens
Power
Board

-7-
●Circuit Adjustments
CAUTION: The each circuit has been made by the fine adjustment at factory. Do not attempt to adjust the follow-
ing adjustments except requiring the readjustments in servicing otherwise it may cause loss of per-
formance and product safety.
■Electrical Adjustments
[Adjustment Condition]
●Input signal
Video signal .......................... 1.0Vp-p/75Ωterminated, 16 steps gray
scale, white 100% and black 0% pat-
tern (Composite video signal)
Computer signal .................... 0.7Vp-p/75Ωterminated, 16 steps gray
scale pattern (XGA)
Component Video signal........ 0.7Vp-p/75Ωterminated, 16 steps gray
scale, white 100% and black 0% pat-
tern (480i format)
RGB Video signal .................. 0.7Vp-p/75Ωterminated, 16 steps gray
scale, white 100% and black 0% pat-
tern (480p format)
●Picture control mode ................ “STANDARD” mode unless otherwise noted.
Note:
* Please refer to “Service Adjustment Menu Operation” in the original model's service manual for entering to the
service mode and adjusting the service data.
White 100% Black 100%
After replacing the Power Board readjust the Output
voltage adjustment as follows.
1. Connect a digital voltmeter to pin 1 (+) of K6A and
chassis ground (-).
2. Adjust the voltage by using VR601 on the power
board as following.
AC Input Reading
230V 370 ±2Vdc
or 120V 356 ±2Vdc
Caution:
Be sure to connect the lamp when taking this adjust-
ment.
zOutput voltage adjustment
1. Receive the 16-step gray scale video signal with
Input 3 [VIDEO] mode.
2. Connect a digital voltmeter to pin 3 (+) of CN6A and
chassis ground (-).
3. Adjust the voltage to be 16.0 ±0.1Vdc by using
VR681 on the power board.
x+16V adjustment
16 steps gray scale pattern
1. Enter the service mode.
2. Connect a digital multimeter to test point “TPFN❊”(+)
and chassis ground (-). (as shown below)
3. Select group no. “11”, item no. “24”and change data
value of the fan number. (as shown below)
4. Select item no.“41”and change data value to adjust
the fan max. output voltage to be 14.0 ±0.1V.
5. Select item no.“42”and change data value to adjust
the fan min. output voltage to be 6.5 ±0.1V.
6. Each fan should be adjusted refer to item 2 - 5.
Note:
The location of each fan is refer to the parts list.
cFan voltage adjustment
FAN No. Group/Item
FN901 11 / 24
FN902 11 / 24
FN903 11 / 24
FN904 11 / 24
FN905 11 / 24
FN906 11 / 24
FN907 11 / 24
Data Test point
0TPFN1
0TPFN1
2TPFN3
5TPFN4
1TPFN5
4TPFN6
3TPFN7
Note:
The Power Board for replacing is already adjusted in
the factory, so it is not required to perform readjust-
ment of item1 and 2.

-8-
1. Receive the 16-step gray scale computer signal with
Input 1 [RGB(Analog)] mode.
2. Enter the service mode.
3. Connect an oscilloscope to test point “TPNRS”(+)
and chassis ground (-).
4. Select group no. “5”, item no. “4”and change data
value to adjust amplitude “a”to be 2.0 ±0.1V.
5. Select item no. “3”and change data value to adjust
amplitude “b”to be 7.0 ±0.1V.
(a)
(b)
GND
vNRS adjustment
1. Receive the 16-step gray scale computer signal with
Input 1 [RGB(Analog)] mode.
2. Enter the service mode.
3. Connect a digital voltmeter to test point “TPV1G”(+)
and chassis ground (-).
4. Select group no. “5”, item no. “5”and change data
value to adjust the voltage to be 6.50 ±0.1Vdc.
5. Connect a digital voltmeter to test point “TPV1B”(+)
and chassis ground (-).
6. Select item no. “6”and change data value to adjust
the voltage to be 6.50 ±0.1Vdc.
7. Connect a digital voltmeter to test point “TPV1R”(+)
and chassis ground (-).
8. Select item no. “7”and change data value to adjust
the voltage to be 6.50 ±0.1Vdc.
9. Connect a digital voltmeter to test point “TPV2G”(+)
and chassis ground (-).
10. Select group no. “5”, item no. “8”and change data
value to adjust the voltage to be 7.50 ±0.1Vdc.
11. Connect a digital voltmeter to test point “TPV2B”(+)
and chassis ground (-).
12. Select item no. “9”and change data value to adjust
the voltage to be 7.50 ±0.1Vdc.
13. Connect a digital voltmeter to test point “TPV2R”(+)
and chassis ground (-).
14. Select item no. “10”and change data value to adjust
the voltage to be 7.50 ±0.1Vdc.
bVideo center adjustment
1. Receive the 16-step gray scale computer signal with
Input 1 [RGB(Analog)] mode.
2. Enter the service mode.
3. Connect an oscilloscope to test point “TP35G”(+)
and chassis ground (-).
4. Select group no. “5”, item no. “0”and change data
value to adjust amplitude “a”to be 10.0 ±0.1V.
3. Connect an oscilloscope to test point “TP35B”(+)
and chassis ground (-).
4. Select item no. “1”and change data value to adjust
amplitude “a”to be 10.0 ±0.1V.
3. Connect an oscilloscope to test point “TP35R”(+)
and chassis ground (-).
4. Select item no. “2”and change data value to adjust
amplitude “a”to be 10.0 ±0.1V.
(a)
black level
black level
nPC black Level adjustment
1. Receive the 16-step gray scale computer signal with
Input 1 [RGB(Analog)] mode.
2. Enter the service mode.
3. Select group no. “500”, item no. “0”and change data
value to adjust the green noise on the white 0% area
of screen to the first point of the deepest green.
4. Select item no. “1”and change data value to adjust
the blue noise on the white 0% area of screen to the
first point of the deepest blue.
4. Select item no. “2”and change data value to adjust
the red noise on the white 0% area of screen to the
first point of the deepest red.
mPC pedestal adjustment
Electrical Adjustments

-9-
1. Receive the 16-step gray scale composite video sig-
nal with Input 3 [Video] mode.
2. Enter the service mode.
3. Connect a digital voltmeter to test point “TPVRB”(+)
and chassis ground (-).
4. Select group no. “5”, item no. “17”and change data
value to adjust the voltage to be 0.70 ±0.02Vdc.
⁄0 Video A/D reference voltage (bottom
side) adjustment
1. Receive the black 0% composite video signal with
Input 3 [Video] mode.
2. Enter the service mode.
3. Select group no. “5”, item no. “11”and change data
value to adjust the green noise on the screen to the
deepest green.
1. Receive the white 100% composite video signal with
Input 3 [Video] mode.
2. Enter the service mode.
3. Select group no. “5”, item no. “18”and change data
value to adjust the magenta noise on the screen to
the deepest magenta.
1. Receive the black 0% composite video signal with
Input 3 [Video] mode.
2. Enter the service mode.
3. Select group no. “5”, item no. “12”and change data
value to adjust the blue noise on the screen to the
deepest blue.
4. Select group no. “5”, item no. “13”and change data
value to adjust the red noise on the screen to the
deepest red.
⁄3 Video Cb/Cr pedestal adjustment
⁄1 Video Y pedestal adjustment
⁄2 Video A/D reference voltage (top
side) adjustment
1. Receive the 16-step gray scale computer signal with
Input 1 [RGB(Analog)] mode.
2. Enter the service mode.
3. Connect an oscilloscope to test point “TP35G”(+)
and chassis ground (-).
4. Select group no. “4”, item no. “3”and change data
value to adjust waveform “a”to be minimum ampli-
tude.
5. Connect an oscilloscope to test point “TP35B”(+)
and chassis ground (-).
6. Select item no. “4”and change data value to adjust
waveform “a”to be minimum amplitude.
7. Connect an oscilloscope to test point “TP35R”(+)
and chassis ground (-).
8. Select item no. “5”and change data value to adjust
waveform “a”to be minimum amplitude.
(a)
White Level
,PC gain adjustment
1. Receive the 16-step gray scale computer signal with
Input 1 [RGB(Analog)] mode.
2. Enter the service mode.
3. Connect an oscilloscope to test point “TP35G”(+)
and chassis ground (-).
4. Select group no. “4”, item no. “6”and adjust the
amplitude “a”to be 1.5 ±0.1V by changing the Data
value.
(a)
white level
white level
.PC signal offset adjustment
Electrical Adjustments

-10-
1. Receive the 16-step gray scale composite video sig-
nal with Input 3 [video] mode.
2. Enter the service mode.
3. Connect an oscilloscope to test point “TP35G”(+)
and chassis ground (-).
4. Select group no. “4”, item no. “3”and change data
value to adjust waveform “a”to be minimum ampli-
tude.
5. Connect an oscilloscope to test point “TP35B”(+)
and chassis ground (-).
6. Select item no. “4”and change data value to adjust
waveform “a”to be minimum amplitude.
7. Connect an oscilloscope to test point “TP35R”(+)
and chassis ground (-).
8. Select item no. “5”and change data value to adjust
waveform “a”to be minimum amplitude.
(a)
White Level
⁄4 Video gain adjustment
1. Receive the black 0% component 480i video signal
with Input 3 [Component] mode.
2. Enter the service mode.
3. Select group no. “5”, item no. “11”and change data
value to adjust the green noise on the screen to the
deepest green.
⁄6 Component Y pedestal adjustment
1. Receive the white 100% component 480i video signal
with Input 3 [Component] mode.
2. Enter the service mode.
3. Select group no. “5”, item no. “18”and change data
value to adjust the magenta noise on the screen to
the deepest magenta.
⁄7 Component A/D reference voltage
(top side) adjustment
1. Receive the black 0% component 480i video signal
with Input 3 [Component] mode.
2. Enter the service mode.
3. Select group no. “5”, item no. “12”and change data
value to adjust the blue noise on the screen to the
deepest blue.
4. Select item no. “13”and change data value to adjust
the red noise on the screen to the deepest red.
⁄8 Component Cb/Cr pedestal adjustment
1. Receive the 16-step gray scale component 480i sig-
nal with Input 3 [Component] mode.
2. Enter the service mode.
3. Connect an oscilloscope to test point “TP35G”(+)
and chassis ground (-).
4. Select group no. “4”, item no. “3”and change data
value to adjust waveform “a”to be minimum amplitude.
5. Connect an oscilloscope to test point “TP35B”(+)
and chassis ground (-).
6. Select item no. “4”and change data value to adjust
waveform “a”to be minimum amplitude.
7. Connect an oscilloscope to test point “TP35R”(+)
and chassis ground (-).
8. Select item no. “5”and change data value to adjust
waveform “a”to be minimum amplitude.
(a)
White Level
⁄9 Component gain adjustment
1. Receive the 16-step gray scale composite video sig-
nal with Input 3 [video] mode.
2. Enter the service mode.
3. Connect an oscilloscope to test point “TP35G”(+)
and chassis ground (-).
4. Select group no. “4”, item no. “6”and adjust the
amplitude “a”to be 1.5 ±0.1V by changing the Data
value.
(a)
white level
white level
⁄5 Video signal offset adjustment
Electrical Adjustments