Read Panasonic TU-PTA100E Service Manual online
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ORDER NO.ITD9911035C2
Receiver
TU-PTA100E
EURO5-TU Chassis
Specifications
Specifications are subject to change without notice. Weight and dimensions shown are approximate.
Power Source
220V-240V 50 Hz/60 Hz A.C.
Power Consumption
23 W
Standby Consumption
2.8 W
Power-OFF Consumption
2.1 W
RGB Output
0.7 V[p-p]
AUDIO Output
0.5 V[rms](Volume max)
Dimensions
H
W
D
121.4 mm
430 mm
349.5 mm
Weight (kg)
5.1 kg
Receiving Systems/
Band name
Band name
PAL B, G, H, I, SECAM B, G SECAM L/L’
VHF E2 - E12 VHF H1 - H2 (ITALY)
VHF A - H (ITALY) UHF E21 - E69
CATV (S01 - S05) CATV S1 - S10 (M1 - M10)
CATV S11 - S20 (U1 - U10) CATV S21 - S42 (Hyperband)
PAL D, K, SECAM D, K
VHF R1 - R2 VHF R3 - R5
VHF R6 - R12 UHF E12 - 69
PAL 525/60 Playback of NTSC tape from some PAL video recorder (VCR)
M.NTSC Playback from NTSC 4.43 MHz Video recorders (VCR)
NTSC (AV mode only) Playback from NTSC Video recorders (VCR)
VHF E2 - E12 VHF H1 - H2 (ITALY)
VHF A - H (ITALY) UHF E21 - E69
CATV (S01 - S05) CATV S1 - S10 (M1 - M10)
CATV S11 - S20 (U1 - U10) CATV S21 - S42 (Hyperband)
PAL D, K, SECAM D, K
VHF R1 - R2 VHF R3 - R5
VHF R6 - R12 UHF E12 - 69
PAL 525/60 Playback of NTSC tape from some PAL video recorder (VCR)
M.NTSC Playback from NTSC 4.43 MHz Video recorders (VCR)
NTSC (AV mode only) Playback from NTSC Video recorders (VCR)
Aerial - Rear
UHF/VHF
Headphones - Front
3.5mm., 8
impedance
AV - Rear
AV1 21 pin terminal - Audio/Video in/out RGB in.
AV2 - 21 pin terminal - Audio/Video in/out, S-Video in, Q-Link
AV4 - 21 pin terminal - Audio/Video in/out, S-Video in
AV - Front
AV3 - S-Video in, 1 x RCA Video in, 2 x RCA Audio in
- 2 -
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SAFETY PRECAUTIONS
General Guidelines
An
isolation transformer should always be used during the servicing of a receiver-decoder whose chassis is not isolated from
the AC power line. Use a transformer of adequate power rating to protect the technician from accidents resulting in personal
injury from electrical shocks. It will also protect the receiver-decoder from being damaged by accidental shorting that may occur
during servicing.
injury from electrical shocks. It will also protect the receiver-decoder from being damaged by accidental shorting that may occur
during servicing.
When servicing, observe the original lead dress. Replace all damaged parts (also parts that show signs of overheating.)
Always replace protective devices, such as fishpaper, isolation resistors and capacitors, and shields after servicing the
receiver-decoder. Use only manufacturer’s recommended rating for fuses, circuits breakers, etc.
receiver-decoder. Use only manufacturer’s recommended rating for fuses, circuits breakers, etc.
High potentials are present when this receiver-decoder is operating. Operation of the receiver-decoder without the cover intro-
duces danger for electrical shock. Servicing should not be performed by anyone who is not thoroughly familiar with the neces-
sary precautions when servicing high-voltage equipment.
duces danger for electrical shock. Servicing should not be performed by anyone who is not thoroughly familiar with the neces-
sary precautions when servicing high-voltage equipment.
Before returning a serviced receiver-decoder to the owner, the service technician must thoroughly test the unit to ensure that
is completely safe to operate. Do not use a line isolation transformer when testing.
is completely safe to operate. Do not use a line isolation transformer when testing.
Leakage Current Cold Check
Unplug the AC cord and connect a jumper between the two plug prongs.
Measure the resistance between the jumpered AC plug and exposed metallic parts such as screwheads, antenna terminals, con-
trol shafts etc. If the exposed metallic part has a return path to the chassis, the reading should be between 240 k
trol shafts etc. If the exposed metallic part has a return path to the chassis, the reading should be between 240 k
and 5.2 M
.
If the exposed metallic part does not have a return path to the chassis, the reading should be infinite.
Leakage Current Hot Check
(see Figure 1)
Plug the AC cord directly into the AC outlet. Do not use an isolation transformer during the check.
Connect a 1.5 k
, 10 watt resistor in parallel with a 0.15
F capacitor between an exposed metallic part and ground. Use earth
ground; for example, a water pipe.
Using a DVM with a 1000 ohms/volt sensitivity or higher, measure the AC potential across the resistor.
Repeat the procedure and measure the voltage present with all other expose metallic parts.
Verify that any potential does not exceed 0.75 Vrms. A leakage current tester (such as a Simpson Model 299, Sencore Model
PR57 or equivalent) may be used in the above procedure, in which case any current measured must not exceed 0.50 mA. If any
measurement is out of the specified limits, there is a possibility of a shock hazard and the receiver-decoder must be repaired and
rechecked before it is returned to the customer.
PR57 or equivalent) may be used in the above procedure, in which case any current measured must not exceed 0.50 mA. If any
measurement is out of the specified limits, there is a possibility of a shock hazard and the receiver-decoder must be repaired and
rechecked before it is returned to the customer.
Figure 1 : Hot Check Circuit
AC VOLTMETER
0.15
m
F
1500
W
, 10W
TO INSTRUMENT'S
EXPOOSED METAL
PARTS
COLD
WATER
PIPE
(GROUND)
IMPORTANT SAFETY NOTICE
Special components are used in this receiver-decoder which are important for safety. These components are identi-
fied on the schematic diagram and on the replacement part list by the symbol
fied on the schematic diagram and on the replacement part list by the symbol
. It is essential that these critical parts
are replaced with the manufacturer’s specified replacement part to prevent shock, fire or other hazards. Do not mod-
ify the original design without the manufacturer’s permission.
ify the original design without the manufacturer’s permission.
- 4 -
IMPORTANT: To protect against possible damage to the solid state devices due to arcing or static discharge, make certain that all
ground wires are securely connected.
CAUTION
The power supply circuit is above earth ground and the chassis cannot be polarized.
Use an isolation transformer when servicing the receiver-decoder to the chassis. Connect the test equipment to
the proper ground (
Use an isolation transformer when servicing the receiver-decoder to the chassis. Connect the test equipment to
the proper ground (
) or (
) when servicing, or incorrect voltages will be measured.
WARNING
This receiver-decoder has been designed to meet or exceed applicable safety and FCC rules as specified by
government agencies and independent testing laboratories.
government agencies and independent testing laboratories.
To maintain original product safety design standards relative to the FCC rules and shock and fire hazard, parts
indicated with the symbol
indicated with the symbol
on the schematic must be replaced with identical parts. Order parts from the man-
ufacturer’s parts center using the parts numbers listed in this service manual, or provide the model number and
the part reference number.
the part reference number.
For optimum performance and reliability, all other parts should be replaced with components of identical speci-
fication.
fication.