Read Panasonic TX-47PT1F (serv.man2) Service Manual online
AV2 OUT
Video (21 pin)
1V p-p 75
Ω
Audio (21 pin)
500mV rms 1k
Ω
Selectable Output (21 pin)
AV3 IN
S-Video IN
Y: 1V p-p 75
Ω
(4-pin)
C: 0.3V p-p 75
Ω
Audio (RCAx2)
500mV rms 10k
Ω
Video (RCAx1)
1V p-p 75
Ω
AV4 IN
Video (21 pin)
1V p-p 75
Ω
Audio (21 pin)
500mV rms 10k
Ω
S-Video IN
Y: 1V p-p 75
Ω
(21 pin)
C: 0.3V p-p 75
Ω
AV4 OUT
Video (21 pin)
1V p-p 75
Ω
Audio (21 pin)
500mV rms 1k
Ω
Dolby Surround-Out
6 x Dolby Surround Out RCA
Rear
High Voltage:
32kV ± 0.5kV
Projection Tube:
TVVAB10EDZ (B-ASSY)
TVVAG10EDZ (G-ASSY)
TVVAR10EDZ (R-ASSY)
90
TVVAG10EDZ (G-ASSY)
TVVAR10EDZ (R-ASSY)
90
°
Deflection
Audio Output:
(Music Power)
2 x 20W
Front Left/Right
26W
Super 3D Bass
2 x 16W
Surround
Impedance 8
Ω
Headphones:
Impedance
8
Ω
Accessories Supplied:
Remote Control
2 x R6 (UM3) Batteries
2 x R6 (UM3) Batteries
Dimensions:
Height:
1211mm
Width:
1093mm
Depth:
560mm
Net Weight:
61kg
Specifications are subject to change without notice.
Weights and dimensions shown are approximate.
Weights and dimensions shown are approximate.
Specifications
Power Source:
220-240V AC, 50Hz
Power Consumption:
239W
Aerial Impedance:
75
Ω
unbalanced, Coaxial Type
Standby Power Consumption:
1.1W
Receiving System:
PAL-I, B/G, H, D/K, PAL-525/60
SECAM L/L, B/G, D/K
M.NTSC
NTSC (AV only)
SECAM L/L, B/G, D/K
M.NTSC
NTSC (AV only)
Receiving Channels:
UHF E21-E69
CATV (S01-S05)
CATV S1-S10 (M1-M10)
CATV S11-S20 (U1-U10)
CATV S21-S41 (HYPERBAND)
CATV (S01-S05)
CATV S1-S10 (M1-M10)
CATV S11-S20 (U1-U10)
CATV S21-S41 (HYPERBAND)
Intermediate Frequency:
Video
38.9MHz, 34MHz
Sound
32.9Mhz, 33.4MHz, 33.16MHz
32.4MHz, 40.4MHz, 33.05MHz
32.66MHz
32.4MHz, 40.4MHz, 33.05MHz
32.66MHz
Colour
34.47MHz (PAL)
34.5MHz, 34.65MHz (SECAM)
34.5MHz, 34.65MHz (SECAM)
Video/Audio Terminals:
AV1 IN
Video (21 pin)
1V p-p 75
Ω
Audio (21 pin)
500mV rms 10k
Ω
RGB (21 pin)
AV1 OUT
Video (21 pin)
1V p-p 75
Ω
Audio (21 pin)
500mV rms 1k
Ω
AV2 IN
Video (21 pin)
1V p-p 75
Ω
Audio (21 pin)
500mV rms 10k
Ω
S-Video IN
Y: 1V p-p 75
Ω
(21 pin)
C: 0.3V p-p 75
Ω
ORDER NO.ITD9903003C2
Video Projection System
TX-47PT1F
EURO5-VP Chassis
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TX-47PT1F
Contents
❑
Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Cover
❑
Safety Precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
❑
Chassis Boards Layout . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
❑
Disassembly for Service . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
❑
Service Hints . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
❑
CRT Set up . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
❑
Self Check . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
❑
Service Mode Function . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
❑
Service Adjustment Procedures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
❑
Digital Convergence . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
❑
Location of Lead Wiring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
❑
Conductor Views . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
❑
Block Diagrams. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40
❑
Schematic Diagrams . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43
❑
Parts Location & Mechanical Replacement Parts List . . . . . . . . . . . . . . . . . 64
❑
Replacement Parts List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 66
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TX-47PT1F
Safety Precautions
General Guide Lines
1. It is advisable to insert an isolation transformer in
the AC supply before servicing a hot chassis.
2. When servicing, observe the original lead dress,
especially the lead dress in the high voltage cir-
cuits.
If a short circuit is found, replace all parts which
have been overheated or damaged by the short
circuit.
cuits.
If a short circuit is found, replace all parts which
have been overheated or damaged by the short
circuit.
3. After servicing, see to it that all the protective
devices such as insulation barriers, insulation
papers, shields, and isolation R-C combinations,
are properly installed.
papers, shields, and isolation R-C combinations,
are properly installed.
4. When the receiver is not be used for a long period
of time, unplug the power cord from the AC outlet.
5. Potential, as high as 32.5 kV, is present when this
monitor is in operation. Operation of the Projection
Monitor without the rear cover involves the danger
of a shock hazard from the power supply. Servicing
should not be attempted by anyone who is not
thoroughly familiar with the precautions necessary
when working on high voltage equipment. Always
discharge the anode of the projection tube to the
Projection Monitor chassis before handling the
tube.
Monitor without the rear cover involves the danger
of a shock hazard from the power supply. Servicing
should not be attempted by anyone who is not
thoroughly familiar with the precautions necessary
when working on high voltage equipment. Always
discharge the anode of the projection tube to the
Projection Monitor chassis before handling the
tube.
6. After servicing make the following leakage current
checks to prevent the customer from being
exposed to shock hazards.
exposed to shock hazards.
Leakage Current Cold Check
1. Unplug the AC cord and connect a jumper
between the two prongs on the plug.
2. Turn on the Projection Monitor’s power switch.
3. Measure the resistance value, with an ohmmeter,
3. Measure the resistance value, with an ohmmeter,
between the jumpered AC plug and each exposed
metallic cabinet part on the projection monitor,
such as screw heads, connectors, control shafts,
etc. When the exposed metallic part has a return
path to the chassis, the reading should be between
4 M
metallic cabinet part on the projection monitor,
such as screw heads, connectors, control shafts,
etc. When the exposed metallic part has a return
path to the chassis, the reading should be between
4 M
Ω
and 20 M
Ω
.
When the exposed metal does not have a return
path to the chassis, the reading must be
path to the chassis, the reading must be
∞
.
Leakage Current Hot Check (See Fig.1)
1. Plug the AC cord directly into the AC outlet. Do not
use an isolation transformer for this check.
2. Connect a 2k
Ω
, 10W resistor, in series with an
exposed metallic part on the projection monitor
and an earth such as a water pipe.
and an earth such as a water pipe.
3. Use an AC voltmeter, with high impedance type, 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 1.0V
rms. In case a measurement is outside of the limits
specified, there is a possibility of a shock hazard,
and the projection monitor should be repaired and
rechecked before it is returned to the customer.
specified, there is a possibility of a shock hazard,
and the projection monitor should be repaired and
rechecked before it is returned to the customer.
X-Radiation
Warning :
1. The potential sources of X-Radiation in projection
1. The potential sources of X-Radiation in projection
monitor are the High Voltage section and the pro-
jection tube.
jection tube.
2. When using a projection tube test jig for service,
ensure that jig is capable of handling 32.5kV with-
out causing X-Radiation.
out causing X-Radiation.
Note: It is impotant use an accurate periodically cali-
brated high voltage meter.
1. Set the brightness to minimum.
2. Set the service switch to the service position.
3. Measure the High Voltage. The meter reading
2. Set the service switch to the service position.
3. Measure the High Voltage. The meter reading
should indicate 31.5 ( ± 1.0 ) kV. If the meter indi-
cation is out of tolerance, immediate service and
correction is required to prevent the possibility of
premature component failure.
cation is out of tolerance, immediate service and
correction is required to prevent the possibility of
premature component failure.
4. To prevent an X-Radiation possibility, it is essential
to use the specified projection tube.
Hot-Check Circuit
Fig. 1
AC Voltmeter
To
Instrument's
Exposed
Metallic Parts
Instrument's
Exposed
Metallic Parts
2k
, 10W
Water Pipe
( Earth )
( Earth )
# !"
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TX-47PT1F
Front
CP
DC
K
F2
G
H
W
A
E
F
D
P
LR
SR
LG
SG
LB
SB
M
K2
RM
Boad-Name
Function
A-Board
Main Signal, MPU, Audio Output
D-Board
Main Power
P-Board
Remocon Power, Line Filter
M-Board
Control Panel, Front Input, AC Switch
K2-Board
LED Drive
RM-Board
Remote Receiver
E-Board
Horizontal Deflection, High Voltage
F-Board
Jungle, Vertical Deflection
CP-Board
Converter Output, Converter Power
DC-Board
Digital Converter
W-Board
White Balance
LR-Board
CRT Drive (R)
LG-Board
CRT Drive (G)
LB-Board
CRT Drive (B)
SG-Board
VM Output (G)
SR-Board
VM Output (R)
SB-Board
VM Output (B)
F2-Board
Digital Core
K-Board
Dolby Output, Dolby Power
G-Board
PINP, Dolby Signal Process
H-Board
Rear terminal
Chassis Board Layout
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