Panasonic PTD7700U - DLP PROJECTOR User manual

©2004 Matsushita Electric Industrial Co., Ltd. All
rights reserved. Unauthorized copying and
distribution is a violation of law.
PT-D7700U
PT-D7700E
DLP ™ Based Projector
ORDER NO. VED0407353C0
D10

2
PT-D7700U / PT-D7700E

1 Safety Precautions 5
1.1. General Guidelines 5
1.2. Leakage Current Check 5
2 Specifications 6
3 Function for Safety 8
3.1. Temperature Detection inside the Lamp Unit 8
3.2. Interlock Switch 8
4 Serviceman Mode 9
4.1. Setting to Serviceman Mode 9
4.2. Resetting to User Mode 9
4.3. Functions in Serviceman Mode 10
5 Using the Serial Terminals 12
5.1. Examples of Connection 12
5.2. Pin Assignments and Signal Names 12
5.3. Communication Conditions (Factory Setting) 12
5.4. Basic Format 12
5.5. Procedure of Communication Condition Settings 13
5.6. Control commands 14
5.7. Cable specifications 17
5.8. Converting to RS-422 Control Functions 17
6 Using a Wired Remote Control 20
6.1. Connection Example 20
6.2. Setting the Projector ID Number for Remote Control 20
7 Support for Service 21
7.1. Supporting Methods 21
7.2. Note for Replacement of P.C.Boards 21
7.3. Service Kit (Extension Board) for X-P.C.Board 21
7.4. Replacement of the lithium battery on the R-P.C.Board
22
8 Cautions for Service 23
9 Parts Location 24
9.1. Electrical Parts Location 24
9.2. Electromechanical Parts Location 24
10 Replacement of Lamp Unit 25
10.1. Precautions on Lamp Unit Replacement 25
10.2. Timing of Lamp Unit Replacement 25
10.3. Lamp Monitor 26
10.4. Procedure of Lamp Unit Replacement 27
11 Disassembly Instructions 29
11.1. Flowchart for Disassembly 29
11.2. Air Filter Cleaning 30
11.3. Removal of Upper Cover 30
11.4. Removal of A-P.C.Board 31
11.5. Removal of S-P.C.Board 32
11.6. Removal of J-P.C.Board 33
11.7. Removal of G-P.C.Board 34
11.8. Removal of R-P.C.Board 35
11.9. Removal of X-P.C.Board 35
11.10. Removal of K-P.C.Board 35
11.11. Removal of Power Supply Block 36
11.12. Removal of PA-P.C.Board 36
11.13. Removal of PC-P.C.Board 37
11.14. Removal of PB-P.C.Board 37
11.15. Removal of Ballast-1 Module 38
11.16. Removal of Ballast-2 Module 39
11.17. Removal of Analysis Block 40
11.18. Removal of DMD / Prism Block 42
12 Troubleshooting 44
12.1. Power Supply Checks 44
12.2. Signal Processing Circuit Checks 53
13 Interconnection Block Diagram 67
13.1. Interconnection Block Diagram (1 / 3) 67
13.2. Interconnection Block Diagram (2 / 3) 68
13.3. Interconnection Block Diagram (3 / 3) 69
14 Block Diagram 71
14.1. Power Supply 71
14.2. Signal Processing (1 / 2) 72
14.3. Signal Processing (2 / 2) 73
15 Schematic Diagram 75
15.1. A-P.C.Board (1 / 9) 76
15.2. A-P.C.Board (2 / 9) 77
15.3. A-P.C.Board (3 / 9) 78
15.4. A-P.C.Board (4 / 9) 79
15.5. A-P.C.Board (5 / 9) 80
15.6. A-P.C.Board (6 / 9) 81
15.7. A-P.C.Board (7 / 9) 82
15.8. A-P.C.Board (8 / 9) 83
15.9. A-P.C.Board (9 / 9) 84
15.10. G-P.C.Board (1 / 2) 85
15.11. G-P.C.Board (2 / 2) 86
15.12. J-P.C.Board (1 / 2) 87
15.13. J-P.C.Board (2 / 2) 88
15.14. K-P.C.Board 89
15.15. PA-P.C.Board 90
15.16. PB-P.C.Board 91
15.17. PC-P.C.Board 92
15.18. R-P.C.Board / S-P.C.Board 93
15.19. X-P.C.Board (1 / 3) 94
15.20. X-P.C.Board (2 / 3) 95
15.21. X-P.C.Board (3 / 3) 96
16 Circuit Boards 97
16.1. A-P.C.Board (Foil Side) 97
16.2. A-P.C.Board (Component Side) 98
16.3. X-P.C.Board,S-P.C.Board (Foil Side) 99
16.4. X-P.C.Board,S-P.C.Board (Component Side) 100
16.5. G-P.C.Board 101
16.6. PA-P.C.Board / R-P.C.Board (Foil Side) 102
16.7. PB-P.C.Board / R-P.C.Board (Component Side) 103
16.8. PC-P.C.Board 104
17 Terminal guide of ICs and transistors 105
18 Exploded Views 107
19 Replacement Parts List 111
CONTENTS
Page Page
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PT-D7700U / PT-D7700E

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PT-D7700U / PT-D7700E

1 Safety Precautions
1.1. General Guidelines
· For continued safety, no modification of any circuit must be
attempted.
· Unplug the power cord from the power outlet before
disassembling this projector.
· It is advisable to use an isolation transformer in the AC
power line before the service.
· 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.
1.2. Leakage Current Check
1.Prepare the measuring circuit as shown in Fig.1.
Be sure to use a voltmeter having the performance
described in Table 1.
Fig. 1
Table 1
Fig. 2
2.Assemble the circuit as shown in Fig. 2. Plug the power
cord in a power outlet.
3.Connect M1 to T1 according to Fig. 2 and measure the
voltage.
4.Change the connection of M1 from T1 to T2 and measure
the voltage again.
5.The voltmeter must read 0.375 V or lower in both of steps
3 and 4. This means that the current must be 0.75 mA or
less.
6.If the reading is out of the above standard, the projector
must be repaired and rechecked before returning to the
customer because of a possibility of an electric shock.
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PT-D7700U / PT-D7700E

2 Specifications
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PT-D7700U / PT-D7700E

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PT-D7700U / PT-D7700E

3 Function for Safety
3.1. Temperature Detection inside the Lamp Unit
This projector has a bimetal contacting the lamp units to protect the
lamps.
If the temperature of one of the lamp units exceeds 135 °C, the bimetal
will operate to turn off the power. The installedposition of the bimetal is
shown in the illustration at right.
To reset the bimetal action, press the protrusion of the bimetal until you
feel a click.
3.2. Interlock Switch
To ensure safety, this projector is designed so that the power cannot be
turned on when the rear cover is removed or installed incorrectly.
If removing the rear cover during operation, the power willbe turned off.
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PT-D7700U / PT-D7700E

4 Serviceman Mode
This mode is used to narrow down the location of the failure.
4.1. Setting to Serviceman Mode
(1) Press the MENU button.
The MENU screen will appear.
(2) Select “OPTION” using the or buttons and press the
ENTER button.
TheOPTION screen will appear.
(3) Select “PASSWORD” using the or buttons and press the
ENTER button.
ThePASSWORD screen will appear.
(4) Set the operation mode selector (Computer/Numeric, Projector) switch
to “Computer/Numeric” on the remote control unit and input the
password “1565”.
“ * “ (asterisk)will appear for the password numbers.
(5) Set the operation mode selector (Computer/Numeric, Projector) switch
to “Projector” on the remote control unit and press the ENTER button.
The words “SERVICEMAN MODE” willappear.
4.2. Resetting to User Mode
(1) Select "PASSWORD" on the OPTION screen using the or
buttons and press the ENTERbutton.
The PASSWORD screen will appear.
(2) Set the operation mode selector (Computer/Numeric, Projector) switch
to "Computer/Numeric" on the remote control unit and input the
password "0000".
" * " (asterisk) will appearfor the password numbers.
(3) Set the operation mode selector (Computer/Numeric, Projector) switch
to "Projector" on the remote control unit and press the ENTER button.
The words "USER MODE" will appear.
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PT-D7700U / PT-D7700E

4.3. Functions in Serviceman Mode
This projector has functions such as image cutoff and deletion of registered signals by one operation.
[VIDEO menu]
SDI COLOR SELECT
Sets the using mode of the color-difference information in ET-MD95SD2 480P dual link ("MAIN" only or both "MAIN" and
"SUB").
AD LPF
Sets the low pass filter.
[ADVANCED menu]
PLL Setting
Sets VCO and the charge pump.
Frame Lock
Sets the frame lock.
V Mask
Sets the V mask.
[EXTRA OPTION menu]
Cut off
Sets the display on or off for each color (red, green, and blue).
Deletion of Input Signals
Deletes all the registered signals.
REMOTE 2 Setting
Sets the functions of the REMOTE 2 terminal.
· When using the contact control and an optional signal selector in combination, set the pins "No. 3, 4, 5, 6, and 7" of the
REMOTE 2 terminal to OPEN. (When REMOTE 2 Setting is "2", set the pins "No. 3, 4, 5, 6, 7, and 8" of the REMOTE
2terminal to OPEN.)
· When AUX is ET-MD95VM2, the LINE and Y/C selection is set to the last selected condition.
Gamma Selection
Sets the selectable modes of gamma on the VIDEO menu.
STANDARD: You can select the following 5 modes.
"2.2", "2.5", "DEFAULT", "USER 1" and "USER 2"
ALL: You can select the following 13 modes.
"1.0", "1.8", "2.0", "2.2", "2.3", "2.4", "2.5", "2.7", "DEFAULT", "USER 1", "USER 2", "USER 3" and "USER 4"
Fan Full Mode
OFF: Controls the fan speed according to temperature and lamp modes.
ON: Sets the intake fan to the full speed to cool best the power supply and DMD prism, but increases fan noise. At this time,
you cannot select "FAN CONTROL" on the OPTION menu.
Caution:
This mode is for a special usage, usually use it in OFF condition.
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PT-D7700U / PT-D7700E

Lamp Switching Mute
OFF: Keeps projecting the picture even when switching the lamps.
ON: Stops projecting the picture when switching the lamps.
* If setting to OFF, the picture may be unstable when switching the lamps.
Lamp Relay
"1h", "2h", "3h", "4h" --- "12h":
Turns on lamp1 or lamp 2 alternatively at a selected time interval (1 - 12 hours) when setting the lamp selection to SINGLE.
note:
Use this mode to operate the projector for a long time continuously.
OFF: Stops switching lamp1 and lamp 2.
Power ON Shutter
Open: Opens the shutter when power ON.
Close: Closes the shutter when power ON.
Power OFF Shutter
Open: Opens the shutter when power OFF.
Close: Closes the shutter when power OFF.
Disregard: Does not control the shutter when power OFF.
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PT-D7700U / PT-D7700E

5 Using the Serial Terminals
The main unit is equipped with SERIAL terminals located in its terminal section on the side, and this terminal is compliant with RS-
232C. Also a serial output terminal is provided to enable plural projector control.
5.1. Examples of Connection
5.2. Pin Assignments and Signal Names
5.3. Communication Conditions (Factory Setting)
5.4. Basic Format
Transmission from the computer begins with STX, then the ID, command, parameter, and ETX are sent in this order. Add
parameters according to the details of control.
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PT-D7700U / PT-D7700E

Attention
· No command can be sent or received for 10 to 60 seconds after the lamp starts lighting. Try sending any command after
that period has elapsed.
· When sending several commands, be sure to wait for a response from the projector before sending the next command.
When sending commands without parameters, a colon (:) is not necessary.
Note
· If a wrong command parameter is sent, the projector will send an "ER401" or "ER402" command to the computer.
· A projector ID supported on the RS-232C interface is ZZ (ALL) and a group of 1 to 64 and 0A to 0Z.
· If a command is sent with a projector ID specified, the projector will respond to the computer only in the following cases:
If it coincides with the projector ID,
ID specification is ALL and VPS-SYSTEM is the master, or
ID specification is group and Group is the master.
5.5. Procedure of Communication Condition Settings
(1) Press the MENU button.
The MAIN MENU screen will be displayed.
(2) Press the and buttons to select “OPTION”.
(3) Press the ENTER button.
(4) Press the and buttons to select “RS232C SETTING”.
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PT-D7700U / PT-D7700E

(5) Press the ENTER button.
The RS232C SETTING screen will be displayed.
(6) Press the and buttons to select communication conditions.
(7) Press the and buttons to confirm the setting..
(8) Press the MENU button three times.
The on-screen indications disappear, and the system returns to the
normal screen.
5.6. Control commands
5.6.1. Input Commands
Items Commands:Parameters Functions Callback Remarks
POWER PON POWER ON PON
POF STAND-BY POF
FREEZE OFZ:0 FREEZE key OFZ:0
OFZ:1 0=OFF 1=ON OFZ:1
MENU OMN MENU key OMN
ENTER OEN ENTER key OEN
CURSOR OCU UP key OCU
OCD DOWN key OCD
OCL LEFT key OCL
OCR RIGHT key OCR
STANDARD OST STANDARD key OST
AUTO SETUP OAS AUTO SETUP execution OAS
SHUTTER OSH:0 SHUTTER key OSH:0
OSH:1 0=OFF 1=ON OSH:1
INPUT SELECT IIS:RG1 RGB1 IIS:RG1
IIS:RG2 RGB2 IIS:RG2
IIS:VID VIDEO IIS:VID
IIS:SVD S-VIDEO IIS:SVD
IIS:AUX AUX IIS:AUX
FUNCTION1 FC1 FUNCTION execution FC1
TEST OTS:p1p2 Test pattern selection OTS:p1p2
00=OFF 01=White picture 02=Black picture
03=Flag
04=Flag inversion 05=1% Window
06=1% Window inversion 07=Focus
08=Colorbar
ON SCREEN OOS:0 OSD selection OOS:0
OOS:1 0= OSD OFF 1=OSD ON OOS:1
NEXT ONX NEXT key ONX
NUMBER KEY ONK:0 NUMBER key 0 ONK:0
ONK:1 NUMBER key 1 ONK:1
ONK:2 NUMBER key 2 ONK:2
ONK:3 NUMBER key 3 ONK:3
ONK:4 NUMBER key 4 ONK:4
ONK:5 NUMBER key 5 ONK:5
ONK:6 NUMBER key 6 ONK:6
ONK:7 NUMBER key 7 ONK:7
ONK:8 NUMBER key 8 ONK:8
ONK:9 NUMBER key 9 ONK:9
SYSTEM SEL OSL SYSTEM SELECTER key OSL
5.6.2. Data setting Commands
Items Commands:Parameters Functions Callback Remarks
ID SET RIS:p1p2 Projector ID setting RIS:p1p2 *1
INSTALLATION OIL:0 Front/Floor OIL:0
OIL:1 Rear/Floor OIL:1
OIL:2 Front/Ceiling OIL:2
OIL:3 Rear/Ceiling OIL:3
LAMP SELECT LPM:0 Lamp selection LPM:0 *2
LPM:1 0=DUAL 1=SINGLE LPM:1
LPM:2 2=LAMP1 3=LAMP2 LPM:2
LPM:3 LPM:3
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PT-D7700U / PT-D7700E

Items Commands:Parameters Functions Callback Remarks
LAMP POWER OLP:0 LAMP POWER setting OLP:0
OLP:1 0=HIGH 1=LOW OLP:1
SUB MEMORY OCS:p1p2 SUB MEMORY switching OCS:p1p2 *1
SET DATE TSD:y1y2y3y4
m1m2d1d2w Date setting TSD:y1y2y3y4m1m2d1d2w y1y2y3y4m1m2 d1d2 + a day
of the week
(Mon.=1
Tues.=2 ---
Sun.=7) *3
SET TIME TST:h1h2m1m2s1s2 Time setting TST:h1h2m1m2s1s2 *3
*1 The input of p1p2 accepts any of the types +1, +01, 1 and 01.
*2 In the SINGLE mode, one of lamp 1 and lamp 2 whose remainder time is longer is turned ON.
*3 Displays of SET DATE and SET TIME are set by UTC (Coordinated Universal Time).
5.6.3. Inquiry Commands
Items Commands:Para
meters Functions Callback Interpretati on Remarks
POWER
CONDITION QPW Inquiry about power 000 OFF
001 ON
FREEZE QFZ Inquiry about freeze 0OFF
1ON
SHUTTER QSH Inquiry about shutter 0OFF
1ON
AUTO SETUP QAS Inquiry about auto setup 0In Process
1In Stop
INPUT SIGNAL QIN Inquiry about input channel RG1 RGB-1
RG2 RGB-2
VID VIDEO
SVD S-VIDEO
AUX AUX
TEST QTS Inquiry about test pattern p1p2
ON SCREEN QOS Inquiry about on screen display 0off
1on
PICTURE MODE QPM Inquiry about picture mode NAT NATURAL
STD STANDARD
DYN DYNAMIC
CIN CINEMA
GRA GRAPHIC
USR USER
COLOR QVC Inquiry about color p1p2p3
TINT QVT Inquiry about tint p1p2p3
COLOR TEMP. QTE Inquiry about color temperature 0LOW
1MIDDLE
2HIGH
4USER1
9USER2
10 DEFAULT
WHITE BALANCE
LOW(R) QOR Inquiry about white balance low (R) p1p2p3
WHITE BALANCE
LOW(G) QOG Inquiry about white balance low (G) p1p2p3
WHITE BALANCE
LOW(B) QOB Inquiry about white balance low (B) p1p2p3
WHITE BALANCE
HI(R) QHR Inquiry about white balance high (R) p1p2p3
WHITE BALANCE
HI(G) QHG Inquiry about white balance high (G) p1p2p3
WHITE BALANCE
HI(G) QHB Inquiry about white balance high (B) p1p2p3
CONTRAST QVR Inquiry about contrast p1p2p3
BRIGHTNESS QVB Inquiry about brightness p1p2p3
SHARPNESS QVS Inquiry about sharpness p1p2p3
NOISE
REDUCTION QNS Inquiry about noise reduction 0OFF
1 1
2 2
3 3
DYNAMIC IRIS QAI Inquiry about DYNAMIC IRIS 0OFF
1ON
DIGITAL CINEMA
REALITY QPD Inquiry about DIGITAL CINEMA REALITY 0AUTO
1OFF
22:2 ON
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PT-D7700U / PT-D7700E

Items Commands:Para
meters Functions Callback Interpretati on Remarks
COLOR MATCHING QMC Inquiry about color matching 0OFF
13COLORS
27COLORS
3MEASURE
4PC
ZOOM(H) QZH Inquiry about horizontal magnification p1p2p3
ZOOM(V) QZV Inquiry about vertical magnification p1p2p3
ZOOM (H/V) QZO Inquiry about magnification p1p2p3
ZOOM (H/V gang
control) QZS Inquiry about gang control for zoom 0OFF
1ON
BLANKING
(UPPER) QLU Inquiry about blanking (upper) p1p2p3
BLANKING
(LOWER) QLB Inquiry about blanking (lower) p1p2p3
BLANKING
(LEFT) QLL Inquiry about blanking (left) p1p2p3
BLANKING
(RIGHT) QLR Inquiry about blanking (right) p1p2p3
CLOCK PHASE QCP Inquiry about clock phase p1p2p3
TOTAL DOTS QTD Dot count p1p2p3p4
DISPLAY DOTS QDD Dot count for display p1p2p3p4
TOTAL LINES QTL Line count p1p2p3p4
DISPLAY LINES QDL Line count for display p1p2p3p4
KEYSTONE QKS Inquiry about trapezoidal correction p1p2p3
LINEARITY QLI Inquiry about trapezoidal linearity p1p2p3
INSTALLATION QSP Inquiry about installed condition 0Front/Floor
1Rear/Floor
2Front/Ceilin
g
3Rear/Ceiling
SET RUNTIME QST Inquiry about uptime p1p2p3p4p5 00000h to
99999h
LAMP ON TIME
(LAMP TIMER) Q$L:p1 (p1 = 1or2) Inquiry about lamp-on time (1=lamp 1 2=lamp 2) p1p2p3p4 0000h to 9999h
LAMP SELECT QSL Inquiry about lamp selection 0DUAL
1SINGLE
2LAMP1
3LAMP2
LAMP POWER QLP Inquiry about lamp power selection 0HIGH
1LOW
VPS SYSTEM QVY Inquiry about VPS system 0SLAVE
1MASTER
GROUP GET ADa1a2;QRG Group acquisition ADa1a2;RGSg1g2
MASTER GET ADg1g2;QRL Group leader acquisition ADa1a2;RLSa1a2
VIDEO SELECT QM1 Inquiry about ET-MD95VM2 board input 0LINE or Y/C
1YCbCr
VIDEO SYSTEM
(VIDEO) QY1 Inquiry about Video system (VIDEO) AT1 AUTO1
AT2 AUTO2
VIDEO SYSTEM
(S-VIDEO) QY2 Inquiry about Video system (S-VIDEO) AT1 AUTO1
AT2 AUTO2
VIDEO SYSTEM
(ET-MD95VM2
board LINE)
QY3 Inquiry about video system (ET-MD95VM2
board LINE) AT1 AUTO1
AT2 AUTO2
VIDEO SYSTEM
(ET-MD95VM2
board Y/C)
QY4 Inquiry about video system (ET-MD95VM2
board Y/C)) AT1 AUTO1
AT2 AUTO2
AUTOSETUP MODE QAM Inquiry about auto setup mode 0USER
1STANDARD
2WIDE
INPUT BOARD QIB Inquiry about input board p1p2p3p4 --- (indefinite
length) MD95VM2
MD95SD1
MD95SD2
MD95SD3
MD95RGB
MD75NT
MD75DV
NONE
UNKNOWN
NOT SUPPORT
TEMPERATURE QTM:p1 Readout of temperature data p1p2p3p4/p5p6p7p8
(Centigrade/Fahrenheit) p1=0 intake
p1=1 exhaust
p1=2 optical
module
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PT-D7700U / PT-D7700E

Items Commands:Para
meters Functions Callback Interpretati on Remarks
PinP QPP Inquiry about P in P on/off 0OFF
1USER1
2USER2
3USER3
FUNCTION1 QFC Inquiry about function 1 0PinP
1LAMP POWER
2SIZE
SUB MEMORY QSB Inquiry about sub memory p1p2
GET DATE QGD Inquiry about date y1y2y3y4m1m2d1d2w yyyymmdd (a
day of the
week)
Adayof
the week:
Mon.=1
Tues.=2 -
-- Sun.=7
GET TIME QGT Inquiry about time h1h2m1m2s1s2 hhmmss
5.7. Cable specifications
Note
To connect the computer to the SERIAL terminal, prepare an adequate communication cable that fits to your personal
computer.
5.8. Converting to RS-422 Control Functions
The RS-232C terminal of the projector is available as a RS-422 control terminal. The factory default setting is RS-232C control
terminal.
Converting the RS-232C-IN terminal to RS-422-IN terminal
(1) If the power of the projector is on, press the POWER OFF ( ) button
on the remote control unit or projector.
(2) Select "EXECUTE" using the or buttons and press the
ENTER button.
Wait aboutfive minutes until the cooling fans stop.
(3) Turn off the MAIN POWER switch on the projector and unplug the power
cord from the outlet.
(4) Follow "11.3" to remove the upper cover.
(5) Remove the connector inserted into A30 on the A-P.C.Board and insert
it into A32.
(6) Install the upper cover.
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PT-D7700U / PT-D7700E

(7) Plug the projector to the outlet and turn on the MAIN POWER switch.
(8) Check that the indicator lamp at the left of the RS-232-IN terminal
illuminates in red.
Returning the RS-232C-IN terminal to RS-232C-IN terminal
(1) If the power of the projector is on, press the POWER OFF ( ) button
on the remote control unit or projector.
(2) Select "EXECUTE" using the or buttons and press the
ENTER button.
Wait aboutfive minutes until the cooling fans stop.
(3) Turn off the MAIN POWER switch on the projector and unplug the power
cord from the outlet.
(4) Follow "11.3" to remove the upper cover.
(5) Remove the connector inserted into A32 on the A-P.C.Board and insert
it into A30.
(6) Install the upper cover.
(7) Plug the projector to the outlet and turn on the MAIN POWER switch.
(8) Check that the indicator lamp at the left of the RS-232-IN terminal
illuminates in green.
Converting the RS-232C-OUT terminal to RS-422-OUT terminal
(1) If the power of the projector is on, press the POWER OFF ( ) button
on the remote control unit or projector.
(2) Select "EXECUTE" using the or buttons and press the
ENTER button.
Wait aboutfive minutes until the cooling fans stop.
(3) Turn off the MAIN POWER switch on the projector and unplug the power
cord from the outlet.
(4) Follow "11.3" to remove the upper cover.
(5) Remove the connector inserted into A29 on the A-P.C.Board and insert
it into A31.
(6) Install the upper cover.
(7) Plug the projector to the outlet and turn on the MAIN POWER switch.
(8) Check that the indicator lamp at the left of the RS-232-IN terminal
illuminates in red.
Returning the RS-232C-OUT terminal to RS-232C-OUT terminal
(1) If the power of the projector is on, press the POWER OFF ( ) button
on the remote control unit or projector.
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PT-D7700U / PT-D7700E

(2) Select "EXECUTE" using the or buttons and press the
ENTER button.
Wait aboutfive minutes until the cooling fans stop.
(3) Turn off the MAIN POWER switch on the projector and unplug the power
cord from the outlet.
(4) Follow "11.3" to remove the upper cover.
(5) Remove the connector inserted into A31 on the A-P.C.Board and insert
it into A29.
(6) Install the upper cover.
(7) Plug the projector to the outlet and turn on the MAIN POWER switch.
(8) Check that the indicator lamp at the left of the RS-232-IN terminal
illuminates in green.
Pin Assignments in the RS-422 Control Mode
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PT-D7700U / PT-D7700E

6 Using a Wired Remote Control
6.1. Connection Example
When two or more projectors are connected in the system, connect the projectors with the supplied remote control cable to
simultaneously control the projectors with a remote control unit through the REMOTE1 IN/OUT terminal. It is effectiveto use the
wired remote control in the environment in which an obstacle stands in the light path or where the system is susceptible to outside
light.
6.2. Setting the Projector ID Number for Remote Control
Every projector has its ID number and the ID number of the controlling projector must be set to the remote control in advance so
that the user can operate the remote control. The ID number of the projector is set to “ALL” on shipping,and use the ID ALL button
of the remote control when using only one projector.
Procedure of ID setting
Press the ID SET button, and within five seconds, use the NEXT button to set the number of the ten place in the ID number,
which is already set in the projector, and then use one of the numeric (0-9) buttons to set the number of the one
place.However,if the ID ALL button is pressed, the projector can be controlled regardless of the ID number of the projector
(simultaneous control mode).
· If the ID SET button is pressed, the ID number goes back to the one set before pressing the ID SET button unless the NEXT
button and a numeric button are pressed within five seconds after the ID SET button is pressed.
· Do not press the ID SET button accidentally or carelessly because the ID number on the remote control can be set even
when no projector is around.
· Your specified ID number is stored in the remote control unit unless another one is specified later. However, the stored ID
will be erased if the batteries of the remote control are left exhausted. When the dry cells are replaced, setthe same ID
number again.
20
PT-D7700U / PT-D7700E