Panasonic TU-PT700U User manual

©2004 Matsushita Electric Industrial Co., Ltd. All
rights reserved. Unauthorized copying and
distribution is a violation of law.
TU-PT700U
GP7P Chassis
Digital Media Receiver
Specifications
Powe
r
Source 120 V AC, 60 Hz
Powe
r
Consumption
Maximum 45 W
Stand-b
y
condition 22 W
Dimensions (W × H × D) 16.9” (430 mm) × 3.4” (86 mm) × 14.8” (377 mm)
Mass (weight) approx. 13.2 lbs
Channel Capability-ATSC
/
NTSC VHF/ UHF : 2-69, CATV:1-135
FEATURES Two screen displa
y
functions LINEAR PIP
BBE VIVA 3D V-Chip
CLOSED CAPTION HDMI
3D Y/C FILTER JPEG Viewer
CableCARD TM slot
Accessories Supplied
A
C cord
Display-Receiver cable
Operating Condition
Temperatu
r
e 32 °F - 104 °F (0 °C - 40 °C)
Humidit
y
20 % - 80 %
Connection Terminals
RGB INPUT D-SUB 15pin R,G,B
/
0.7 Vp-p (75 W)
HD VD
/
TTL Level (high impedance)
A
V INPUT 1- 3 VIDEO (Phono Jack Type) 1.0 Vp-p (75 W)
S-VIDEO (Mini DIN 4-pin)
Y
: 1.0 Vp-p (75 W) C : 0.286 Vp-p (75 W)
A
UDIO L-R (Phono Jack Type × 2) 0.5 Vrms
A
V PROG. OUT VIDEO (Phono Jack Type) 1.0 Vp-p (75 W)
A
UDIO L-R (Phono Jack Type × 2) 0.5 Vrms
A
UDIO OUT
A
UDIO L-R (Phono Jack Type × 2) 0.5 Vrms
COMPONENT VIDEO INPUT1-2
Y
1.0 Vp-p (including sync)
PB
/
PR 0.7 Vp-p
A
UDIO L-R (Phono Jack Type × 2) 0.5 Vrms
HDMI/AUDIO INPUT HDMI type A Connecto
r
A
UDIO L-R (Phono Jack Type × 2) 0.5 Vrms
DIGITAL AUDIO OUT PCM
/
Dolb
y
Digital, Fibe
r
Optic
DISPLA
Y
OUT D-sub 26-pin, Digital RGB 24-pin
ORDER NO. ITD0411063C1
B19Canada:B07

1 Applicable signals (Video/ Component/ RGB/ PC/ HDMI input
signals) 3
2 Safety Precautions 4
2.1. General Guidelines 4
3 Prevention of Electro Static Discharge (ESD) to
Electrostatically Sensitive (ES) Devices 5
4 About lead free solder (PbF) 6
5 Service Hint 7
5.1. Chassis board layout 7
5.2. P.C.Board structure sheet of GP7P chassis 8
6 P.C.Board replacement method 9
6.1. Remove the JG-Board 9
6.2. Remove the P-Board 9
6.3. Remove the K-Board 9
6.4. Remove the BL-Board 9
6.5. Remove the G-Board 10
6.6. Remove the DT-Board and JA-Board 10
6.7. Remove the DV Board 10
6.8. Remove the DG-Board, T-Board and H-Board 11
7 Location of Lead Wiring 12
8 Alignment 13
8.1. Sub contrast adjustment (NTSC) 13
8.2. Sub contrast adjustment (HDTV) 14
8.3. A/D converter gain adjustment (480p . 1080i) 15
9 Self-check Function 16
9.1. Self-check of the microcomputer control system (bus line)
16
9.2. Power LED Blinking timing chart 17
10 Serviceman Mode (Electronic Controls) 18
11 CAT (Computer Aided Test) mode 21
11.1. IIC mode 21
11.2. CD mode 22
11.3. SD mode 22
11.4. IIC mode structure (following items value is sample data.)
23
12 Circuit Board Layout 25
12.1. P-Board 25
12.2. T-Board 28
12.3. H-Board 29
12.4. DT-Board 31
12.5. JA-Board 33
12.6. DG-Board 34
12.7. DV-Board 37
12.8. BL-Board 40
12.9. G-Board 41
12.10. JG-Board 42
12.11. K-Board 44
13 Schematic Diagrams 45
13.1. Schematic Diagram Notes 45
13.2. Main Block Diagram 46
13.3. P-Board Block Diagram 47
13.4. P-Board (1 of 2) Schematic Diagram 49
13.5. P-Board (2 of 2) Schematic Diagram 50
13.6. H and T-Board Block Diagram 51
13.7. H-Board (1 of 2) and T-Board Schematic Diagram 52
13.8. H-Board (2 of 2) Schematic Diagram 53
13.9. DT and JA-Board Block Diagram 54
13.10. DT-Board (1 of 8) Schematic Diagram 56
13.11. DT-Board (2 of 8) Schematic Diagram 57
13.12. DT-Board (3 of 8) Schematic Diagram 58
13.13. DT-Board (4 of 8) Schematic Diagram 59
13.14. DT-Board (5 of 8) Schematic Diagram 60
13.15. DT-Board (6 of 8) Schematic Diagram 61
13.16. DT-Board (7 of 8) Schematic Diagram 62
13.17. DT-Board (8 of 8) Schematic Diagram 63
13.18. JA-Board Schematic Diagram 64
13.19. DG-Board Block Diagram 65
13.20. DG-Board (1 of 5) Schematic Diagram 67
13.21. DG-Board (2 of 5) Schematic Diagram 68
13.22. DG-Board (3 of 5) Schematic Diagram 69
13.23. DG-Board (4 of 5) Schematic Diagram 70
13.24. DG-Board (5 of 5) Schematic Diagram 71
13.25. DV-Board Block Diagram 72
13.26. DV-Board (1 of 5) Schematic Diagram 74
13.27. DV-Board (2 of 5) Schematic Diagram 75
13.28. DV-Board (3 of 5) Schematic Diagram 76
13.29. DV-Board (4 of 5) Schematic Diagram 77
13.30. DV-Board (5 of 5) Schematic Diagram 78
13.31. JG-Board Block Diagram 79
13.32. JG-Board (1 of 2) Schematic Diagram 80
13.33. JG-Board (2 of 2) Schematic Diagram 81
13.34. G, K and BL-Board Block Diagram 82
13.35. G, K and BL-Board Schematic Diagram 83
14 Parts Location 85
15 Mechanical Replacement Parts List 86
16 Replacement Parts List 87
Note:
Design and specifications are subject to change without notice. Weight and Dimensions shown are approximate.
CONTENTS
Page Page
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16.1. Replacement Parts List Notes 87 16.2. Electrical Replacement Parts List 88
1 Applicable signals (Video/ Component/ RGB/ PC/ HDMI
input signals)
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2.1.1. Leakage Current Cold Check
1.Unplug the AC cord and connect a jumper between the two
prongs on the plug.
2.Measure the resistance value, with an ohmmeter, between
the jumpered AC plug and each exposed metallic cabinet
part on the equipment such as screwheads, connectors,
control shafts, etc. When the exposed metallic part has a
return path to the chassis, the reading should be between
1MWand 5.2MW.
When the exposed metal does not have a return path to
the chassis, the reading must be .
Figure 1
2.1.2. Leakage Current Hot Check (See
Figure 1.)
1.Plug the AC cord directly into the AC outlet. Do not use an
isolation transformer for this check.
2.Connect a 1.5kW, 10 watts resistor, in parallel with a 0.15µF
capacitors, between each exposed metallic part on the set
and a good earth ground such as a water pipe, as shown in
Figure 1.
3.Use an AC voltmeter, with 1000 ohms/volt or more
sensitivity, to measure the potential across the resistor.
4.Check each exposed metallic part, and measure the
voltage at each point.
5.Reverse the AC plug in the AC outlet and repeat each of the
above measurements.
6.The potential at any point should not exceed 0.75 volts
RMS. A leakage current tester (Simpson Model 229 or
equivalent) may be used to make the hot checks, leakage
current must not exceed 1/2 milliamp. In case a
measurement is outside of the limits specified, there is a
possibility of a shock hazard, and the equipment should be
repaired and rechecked before it is returned to the
customer.
2 Safety Precautions
2.1. General Guidelines
1.When servicing, observe the original lead dress. If a short circuit is found, replace all parts which have been overheated or
damaged by the short circuit.
2.After servicing, see to it that all the protective devices such as insulation barriers, insulation papers shields are properly
installed.
3.After servicing, make the following leakage current checks to prevent the customer from being exposed to shock hazards.
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3 Prevention of Electro Static Discharge (ESD) to
Electrostatically Sensitive (ES) Devices
Some semiconductor (solid state) devices can be damaged easily by static electricity. Such components commonly are called
Electrostatically Sensitive (ES) Devices. Examples of typical ES devices are integrated circuits and some field-effect transistors and
semiconductor "chip" components. The following techniques should be used to help reduce the incidence of component damage
caused by electro static discharge (ESD).
1.Immediately before handling any semiconductor component or semiconductor-equipped assembly, drain off any ESD on your
body by touching a known earth ground. Alternatively, obtain and wear a commercially available discharging ESD wrist strap,
which should be removed for potential shock reasons prior to applying power to the unit under test.
2.After removing an electrical assembly equipped with ES devices, place the assembly on a conductive surface such as alminum
foil, to prevent electrostatic charge buildup or exposure of the assembly.
3.Use only a grounded-tip soldering iron to solder or unsolder ES devices.
4.Use only an anti-static solder removal device. Some solder removal devices not classified as "anti-static (ESD protected)" can
generate electrical charge sufficient to damage ES devices.
5.Do not use freon-propelled chemicals. These can generate electrical charges sufficient to damage ES devices.
6.Do not remove a replacement ES device from its protective package until immediately before you are ready to install it. (Most
replacement ES devices are packaged with leads electrically shorted together by conductive foam, alminum foil or comparable
conductive material).
7.Immediately before removing the protective material from the leads of a replacement ES device, touch the protective material
to the chassis or circuit assembly into which the device will be installed.
Caution
Be sure no power is applied to the chassis or circuit, and observe all other safety precautions.
8.Minimize bodily motions when handling unpackaged replacement ES devices. (Otherwise hamless motion such as the brushing
together of your clothes fabric or the lifting of your foot from a carpeted floor can generate static electricity (ESD) sufficient to
damage an ES device).
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4 About lead free solder (PbF)
Note: Lead is listed as (Pb) in the periodic table of elements.
In the information below, Pb will refer to Lead solder, and PbF will refer to Lead Free Solder.
The Lead Free Solder used in our manufacturing process and discussed below is (Sn+Ag+Cu).
That is Tin (Sn), Silver (Ag) and Copper (Cu) although other types are available.
This model uses Pb Free solder in it’s manufacture due to environmental conservation issues. For service and repair work, we’d
suggest the use of Pb free solder as well, although Pb solder may be used.
PCBs manufactured using lead free solder will have the PbF within a leaf Symbol stamped on the back of PCB.
Caution
· Pb free solder has a higher melting point than standard solder. Typically the melting point is 50 ~ 70 °F (30~40 °C) higher.
Please use a high temperature soldering iron and set it to 700 ± 20 °F (370 ± 10 °C).
· Pb free solder will tend to splash when heated too high (about 1100 °F or 600 °C).
If you must use Pb solder, please completely remove all of the Pb free solder on the pins or solder area before applying Pb
solder. If this is not practical, be sure to heat the Pb free solder until it melts, before applying Pb solder.
· After applying PbF solder to double layered boards, please check the component side for excess solder which may flow onto
the opposite side. (see figure below)
Suggested Pb free solder
There are several kinds of Pb free solder available for purchase. This product uses Sn+Ag+Cu (tin, silver, copper) solder.
However, Sn+Cu (tin, copper), Sn+Zn+Bi (tin, zinc, bismuth) solder can also be used.
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Remove the Top cover
Remove the screws (×7).
Remove the Front panel
Release the Locking tabs at both side (×2 ), bottom (×3
) and top (×1 ).
Remove the Rear panel
Remove the screws (×11 ), a coupler (PF1), the AC
socket and release the both side locking tabs(×2 ).
5 Service Hint
5.1. Chassis board layout
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5.2. P.C.Board structure sheet of GP7P chassis
Board Name Function
DT-Board ATSC interface
H-Board Rear terminal (Component, Composite, S-video, Audio, Monitor out), AV input SW
T-Board Analog tuner
DG-Board Global tv signal processing Core (GC2M, GC2S), Micom, 64M SDRAM, Sync SW, BEE VIVA
DV-Board DVI I/F receiver, DVI/HDMI select, Audio DAC, AD converter, LVDS
G-Board Front AV (Video 3) input, PC input
K-Board Power SW, Power LED, Key SW
P-Board Power Supply
BL-Board Blue LED
JA-Board DT-Board - DG-Board connection
JG-Board JPEG Interface
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WARNING :
disconnect the unit from power source before disassembly
6.1. Remove the JG-Board
1.Remove the screws (×3) and remove the JG-Board with the
Bracket.
2.Remove the screws (×2) to remove the JG-Board bracket
and the Shield cover, and remove a coupler (JG31).
6.2. Remove the P-Board
1.Remove the couplers (P2, P10, P11, P13, P18, (PF1)), the
screws (×2 ) and remove the JA-Board support angle.
2.Remove the screws (×4 ) and remove the P-Board.
6.3. Remove the K-Board
1.Remove a coupler (K12), the screws (×3) and remove the
K-Board.
6.4. Remove the BL-Board
1.Remove a coupler (BL1), the screws (×2) and remove the
BL-Board.
6 P.C.Board replacement method
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6.5. Remove the G-Board
1.Remove the couplers (G7, G10), the screws (×4) and
remove the G-Board.
6.6. Remove the DT-Board and JA-
Board
1.Remove the couplers (JA18: on the JA-Board, P10: on the
P-Board)and an antenna cable (connected to the T-Board
Tuner).
2.Remove the screws (×4 ) and the DT-Board support
angle.
3.Remove the screws (×2 ) and the JA-Board support
angle.
4.Disconnect the coupler (JA23-DG23) and remove the DT-
Board with the JA-Board.
5.Disconnect the coupler (JA8007-JK8007) to separate the
JA-Board and DT-Board.
6.Remove the screws (×2 ) and remove the DT-Board
bracket with the fan.
6.7. Remove the DV Board
1.Remove the screws (×4 ), the coupler (DG3: on the DG-
Board, H7: on the H-Board, DV13) and remove the DV-
Board with the DV-Board cover bracket.
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2.Remove the screws (×4 ), the hex. head screws (×4
) and the couplers (DV3, DV7).
3.Remove the DV-Board cover bracket from the DV-Board.
6.8. Remove the DG-Board, T-
Board and H-Board
<DG-Board>
1.Remove the screws (×7), the couplers (DG2, DG5,
DG7, DG10, DG12, DG31), DV-Board support angle
and T-Board support angle.
2.Remove the DG-Board with the H-Board and T-Board.
<H-Board, T-Board>
1.Disconnect the coupler (DG1-H1) and separate the DG-
Board and H-Board with the T-Board.
2.Disconnect the couplers (T21/H21, T22/H22), the tuner
cable and remove the T-Board from the H-Board.
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7 Location of Lead Wiring
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8 Alignment
Preparation:
1.Connect the Digital media receiver to the Plasma display by the system cables.
2.Place the units into IIC mode of CAT mode.
8.1. Sub contrast adjustment (NTSC)
Preparation
PICTURE:VIVID (NORMAL SET)
ADJUSTMENT DATA: BRIGH, CONT
Note:
Set ABL operation to off in Contrast adjustment.
Measurement Instrument Remarks
1.Oscilloscope
2.Alignment equipment
Extension cable kit (Part No.TZSC0704)
3.Remote control
Picture menu: VIVID
Picture pattern: Studio color bar
Probe: The signal should be terminated by 75W, ±1% resistor.
Not use Cross hatch signal
Adjustment Procedures
1.Apply the 10 stair-step (B/W) signal to Composite video input.
2.Connect the Oscilloscope to CN3303-A38 (G out) of G-Board.
3.Adjust Sub contrast so that the B-W (Blanking portion-White) is 0.60V±0.02V.
4.Also connect the oscilloscope to CN3303-A34 (R out) and observe both waveforms simultaneously.
5.Adjust R-drive so that the amplitude of R signal is same as G signal.
6.Connect the Oscilloscope to CN3303-A36 (B out) and CN3303-A38 (G out), and observe the both waveforms simultaneously.
7.Adjust B-drive so that the amplitude of B signal is same as G signal.
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8.2. Sub contrast adjustment (HDTV)
Preparation
PICTURE:VIVID (NORMAL SET)
ADJUSTMENT DATA: BRIGH, CONT
Measurement Instrument Remarks
1.Oscilloscope
2.Alignment equipment
Extension cable kit (Part No.TZSC0704)
3.Remote control
Picture menu: VIVID
Picture pattern: 10 stair-step
Adjustment Procedures
1.Apply the HD 10 stair-step signal to HD baseband signal.
2.Connect the Oscilloscope to CN3303-A38 (G out of DR-Board).
3.Adjust Sub contrast so that B-W is 0.60V±0.02V.
4.Also connect the oscilloscope to CN3303-A34 (R out) and observe both waveforms simultaneously.
5.Adjust R-drive so that the amplitude of R signal waveform is same as G signal.
6.Connect the Oscilloscope to CN3303-A38 (G out) and CN3303-A36 (B out), and observe the both waveforms simultaneously.
7.Adjust B-drive so that the amplitude of B signal is same as G signal.
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8.3. A/D converter gain adjustment (480p . 1080i)
Preparation
PICTURE:VIVID (NORMAL SET)
ADJUSTMENT DATA: BRIGH, CONT
Note:
Set ABL operation to off in Contrast adjustment.
Measurement Instrument Remarks
1.Oscilloscope
2.Alignment equipment
Extension cable kit (Part No.TZSC0704)
3.Remote control
Picture menu: VIVID
Picture pattern: Studio color bar
Probe: The signal should be terminated by 75W, ±1% resistor.
Not use Cross hatch signal
Adjustment Procedures
1.Apply the 10 stair-step (B/W) signal (480p or 480i) to HDMI input.
2.Connect the Oscilloscope to CN3303-A38 (G out of DR-Board).
3.Adjust ADC-G so that the B-W (Blanking portion-White) is 0.53V±0.02V.
4.Also connect the oscilloscope to CN3303-A34 and observe both waveforms simultaneously.
5.Adjust ADC-R so that the amplitude of R signal waveform is same as G signal.
6.Connect the Oscilloscope to CN3303-A38 (G out) and CN3303-A36 (B out), and observe both waveforms simultaneously.
7.Adjust ADC-B so that the amplitude of B signal is same as G signal.
8.Apply 1080i 10 stair-step (B/W) signal to HDMI input.
9.Perform same procedures (item 2-7) as 480p signal adjustment.
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9 Self-check Function
When symptoms like “the power fails sometimes” or “sometimes there is no picture and/or sound” can not be confirmed at the
time of servicing, the self-check function can be used to confirm the occurrence and to find the defective circuit.
In case of “power failure”, flashing of the “POWER” indication (red) at the front of the unit can be used to narrow down the +B
line.
9.1. Self-check of the microcomputer control system (bus line)
Indicaton method
Connect the Plasma Display and the Digital Media Receiver.
Press the “OK” button in the control panel of the Digital media receiver simultaneously with the “POWER” button in the control
panel of the unit. Hold them a few seconds.
Return to the normal screen
Press any button on the unit or in the remote control.
Screen Display
Display Ref. No. Description Board Remarks
EEPROM IC002 EEPROM for Main MPU DG Receiver
TNR1 TNR8000 Tuner1 DT Receiver
BBE IC4203 BBE VIVA DG Receiver
YUV_SW IC4302 YUV switch H Receiver
DVI_TX IC5201 LVDS DV Receiver
DVIDDC IC5001 DDC EEPROM DV Receiver
IO_DR IC3304 DVI I/F Reciver DR Display
PANEL ----- Panel ----- Display
GC2M IC4501 Global TV Signal Processing Core (Main) DG Receiver
MTS IC8008 NXTWARE DT Receiver
CNVRT IC9869 A/D Converter D Display
AVSW IC4301 AV switch H Receiver
HDMI IC5003 HDMI Receiver DV Receiver
JPEG IC6513 JPEG I/F JG Receiver
PEAKS IC8024 HDsL Peaks DT Receiver
GC2S IC4502 Global TV Signal Processing Core (Sub) DG Receiver
TNR2 TU251 Tuner 2 T Receiver
DACDG IC8031 Expand DAC DG Receiver
DACDV IC5011 D/A Converter DV Receiver
ADC IC5203 A/D Converter DV Receiver
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9.2. Power LED Blinking timing chart
1.Subject
Information of LED Flashing timing chart.
2.Contents
When an abnormality has occurred the unit, the protection circuit operates and reset to the stand by mode. At this time, the
defective block can be identified by the number of blinkes of the Power LED on the front panel of the unit.
Blinking times Point Circuit Board Parts
1 time 5V power supply trouble P IC7504
2 times SOS Power circuit P IC7501-IC7508
3 times DTV DTV circuit P IC404
4 times FAN SOS P IC7508
5 times Power start(Note) DV JK5003, pin24(Note)
Note:
When 5 times LED blinking happened, power off and power on again, it will recover.
Exchange or check the JK5003, pin24 when re-start was not possible or blinking 5 times happen many time.
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10 Serviceman Mode (Electronic Controls)
These Receiver and Plasma Display have electronic technology using the I2C BUS Concept. It performs as a control function
and it replaces many mechanical controls. Instead of adjusting mechanical controls individually, many of the control function are
now performed by using “On Screen Display Menu”. (The Serviceman Adjustment Mode.)
Note
It is suggested that the technician reads all the way through and understand the following the procedure for Entering/Exiting the
Serviceman Mode; then proceed with the instructions working the Receiver. When becoming familiar with the procedure, the
Flow Chart for Serviceman Mode may be used as a quick guide.
Quick Entry to Serviceman Mode:
At times when minor adjustments need to be done to the electronic controls, the method of Entering the serviceman Mode
without removal of the cabinet back is as follows using the Remote Control:
1.Press the MENU button to display the Main menu, select SET-UP icon and then select the Program CH to set “Cable only”
(Input Setup) mode.
2.Return to the Main menu, press MENU button twice and select TIMER icon, press OK to set SLEEP time for 30 Min with
press the Vo1 .
3.Press MENU button twice to exit menus.
4.Tune to the Channel 124.
5.Adjust VOLUME to minimum (0).
6.Press the VOL button (decrease) on the Digital media receiver. Red “CHK” appears in upper corner.
7.Press the Power Button on the Remote Control to select one of six Serviceman Adjustment Modes.
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Exiting the Serviceman Mode:
Press the Power button on the Receiver.
For Adjustments:
1.Press Channel Up/Down on the Remote Control to select one of the available Service Adjustments and press the OK
button.
Note:
Write Down the original value set for each address before modifying anything. It is easy to erroneously adjust the wrong
item.
2.Press Volume Up/Down on the Remote Control to adjust the level of the selected Service Adjustment.
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JPEG Service Mode
Note:
To exit from JPEG Service mode, press “EXIT“ or power button on remote control.
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