Panasonic SA-PT350E / SA-PT350EB / SA-PT350EG Service Manual ▷ View online
18.4. DVD (Video)
88
18.5. DVD (HDMI)
89
18.6. Audio
90
18.7. Audio Digital Amp
91
18.8. Power
92
19 Schematic Diagram Notes
93
20 Schematic Diagram
95
20.1. DVD Module (DV5/HDMI) Circuit
95
20.2. Main & Panel Circuit
100
20.3. D-Amp & SMPS Circuit
105
20.4. Scart Circuit
109
20.5. Volume, USB, Wireless Adapter, AC-Inlet, Relay, Tray
Loading & Optical Pickup Unit Circuit
110
21 Printed Circuit Board
113
21.1. DVD Module P.C.B.
113
21.2. Main P.C.B.
114
21.3. Panel, Volume & USB P.C.B.
115
21.4. D-Amp P.C.B.
116
21.5. SMPS & Wireless Adapter P.C.B.
117
21.6. AC-Inlet, Scart, Relay, Tray Loading P.C.B.
118
22 Basic Troubleshooting Guide
119
22.1. Basic Troubleshooting Guide for Traverse Unit (DVD
Module P.C.B)
119
22.2. Basic Troubleshooting Guide for HDMI AV output
120
23 Overall Block Diagram for PT350W
122
23.1. SC-PT350W Simplified Block
122
23.2. SC-PT350W Power Block
123
23.3. SC-PT350W SMPS Block
124
24 Terminal Function of ICs
125
24.1. IC2001 (C2CBYY000418): System Control IC
125
25 Exploded Views
126
25.1. Cabinet Parts Location
127
25.2. Packaging (For SC-PT350WE)
129
26 Replacement Parts List
130
26.1. Component Parts List
131
5
SA-PT350E / SA-PT350EB / SA-PT350EG
1 Safety Precautions
1.1. 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, carry out the following leakage current checks to prevent the customer from being exposed to shock hazards.
1.1.1.
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
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 1M
chassis, the reading should be between 1M
Ω and 5.2MΩ.
When the exposed metal does not have a return path to the chassis, the reading must be
1.1.2.
LEAKAGE CURRENT HOT CHECK
1. Plug the AC cord directly into the AC outlet. Do not use an isolation transformer for this check.
2. Connect a 1.5k
2. Connect a 1.5k
Ω, 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
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.
specified, there is a possibility of a shock hazard, and the equipment should be repaired and rechecked before it is returned to
the customer.
Figure 1
1.2. Before Repair and Adjustment
Disconnect AC power to discharge unit AC Capacitors as such C5700, C5701, C5703, C5704, C5705 through a 10
Ω, 10 W
resistor to ground.
Caution:
Caution:
DO NOT SHORT-CIRCUIT DIRECTLY (with a screwdriver blade, for instance), as this may destroy solid state devices.
After repairs are completed, restore power gradually using a variac, to avoid overcurrent.
Current consumption at AC 230 V, 50 Hz in NO SIGNAL mode volume minimal should be ~ 600 mA. (For E/EG)
Current consumption at AC 240 V, 50 Hz in NO SIGNAL mode volume minimal should be ~ 600 mA. (For EB)
Current consumption at AC 230 V, 50 Hz in NO SIGNAL mode volume minimal should be ~ 600 mA. (For E/EG)
Current consumption at AC 240 V, 50 Hz in NO SIGNAL mode volume minimal should be ~ 600 mA. (For EB)
1.3. Protection Circuitry
The protection circuitry may have operated if either of the following conditions are noticed:
· No sound is heard when the power is turned on.
· Sound stops during a performance.
· No sound is heard when the power is turned on.
· Sound stops during a performance.
6
SA-PT350E / SA-PT350EB / SA-PT350EG
The function of this circuitry is to prevent circuitry damage if, for example, the positive and negative speaker connection wires are
“shorted”, or if speaker systems with an impedance less than the indicated rated impedance of the amplifier are used.
If this occurs, follow the procedure outlines below:
1. Turn off the power.
2. Determine the cause of the problem and correct it.
3. Turn on the power once again after one minute.
Note:
When the protection circuitry functions, the unit will not operate unless the power is first turned off and then on again.
“shorted”, or if speaker systems with an impedance less than the indicated rated impedance of the amplifier are used.
If this occurs, follow the procedure outlines below:
1. Turn off the power.
2. Determine the cause of the problem and correct it.
3. Turn on the power once again after one minute.
Note:
When the protection circuitry functions, the unit will not operate unless the power is first turned off and then on again.
1.4. Safety Parts Information
Safety Parts List:
There are special components used in this equipment which are important for safety.
These parts are marked by
These parts are marked by
in the Schematic Diagrams & Replacement Parts List. It is essential that these critical parts
should be replaced with manufacturer’s specified parts to prevent shock, fire or other hazards. Do not modify the original design
without permission of manufacturer.
without permission of manufacturer.
Table 1
Reference No.
Part No.
Part Name & Description
Remarks
340
RAE2024Z-S
TRAVERSE UNIT
[M]
PC5701
B3PBA0000402
PHOTO COUPLER
[M]
PC5702
B3PBA0000402
PHOTO COUPLER
[M]
PC5720
B3PBA0000402
PHOTO COUPLER
[M]
PC5799
B3PBA0000402
PHOTO COUPLER
[M]
D5701
B0FBAR000041
DIODE
[M]
DZ5701
ERZV10V511CS
ZENER
[M]
TH5701
D4CAC8R00002
THERMISTOR
[M]
TH5860
D4CC11040013
THERMISTOR
[M]
L2101
J0JBC0000015
CHIP INDUCTOR
[M]
L2201
J0JBC0000015
CHIP INDUCTOR
[M]
L2802
J0JBC0000015
CHIP INDUCTOR
[M]
L2803
J0JBC0000015
CHIP INDUCTOR
[M]
L2804
J0JBC0000015
CHIP INDUCTOR
[M]
L5001
G0B9R5K00003
LINE CHOKE COIL
[M]
L5002
G0B9R5K00003
LINE CHOKE COIL
[M]
L5201
G0B9R5K00003
LINE CHOKE COIL
[M]
L5301
G0B9R5K00003
LINE CHOKE COIL
[M]
L5701
ELF15N035AN
LINE FILTER
[M]
L5702
ELF22V035B
COIL
[M]
L6101
J0JBC0000019
CHIP INDUCTOR
[M]
L6201
J0JBC0000019
CHIP INDUCTOR
[M]
L6801
J0JBC0000019
CHIP INDUCTOR
[M]
L6904
J0JBC0000019
CHIP INDUCTOR
[M]
L6905
J0JBC0000019
CHIP INDUCTOR
[M]
L6906
J0JBC0000019
CHIP INDUCTOR
[M]
L6907
J0JBC0000019
CHIP INDUCTOR
[M]
L6908
J0JBC0000019
CHIP INDUCTOR
[M]
L6909
J0JBC0000019
CHIP INDUCTOR
[M]
T2900
G4D1A0000117
SWITCHING TRANSFORMER
[M]
T5701
ETS42BN1A6AD
MAIN TRANSFORMER
[M]
T5751
ETS19AB236AG
BACK-UP TRANSFORMER
[M]
F1
K5D502BNA005
FUSE
[M]
FP2900
K5G401A00008
FUSE PROTECTOR
[M]
P5701
K2AA2B000015
JACK AC INLET
[M]
A2
K2CQ2CA00007
AC CORD
[M]
EG/E
A2
K2CT3CA00004
AC CORD
[M]
EB
C5700
F1BAF1020020
1000P
[M]
C5701
ECQU2A334MLA
0.33
[M]
C5703
ECQU2A104MLC
0.1
[M]
C5704
F1BAF1020020
1000P
[M]
C5705
F1BAF1020020
1000P
[M]
7
SA-PT350E / SA-PT350EB / SA-PT350EG
1.5. Caution for AC Cord
(For United Kingdom)
("EB" area code model only)
For your safety, please read the following text carefully.
This appliance is supplied with a moulded three pin
mains plug for your safety and convenience.
A 5-ampere fuse is fitted in this plug.
Should the fuse need to be replaced please ensure that
the replacement fuse has a rating of 5-ampere and that it
is approved by ASTA or BSI to BS1362.
Check for the ASTA mark
This appliance is supplied with a moulded three pin
mains plug for your safety and convenience.
A 5-ampere fuse is fitted in this plug.
Should the fuse need to be replaced please ensure that
the replacement fuse has a rating of 5-ampere and that it
is approved by ASTA or BSI to BS1362.
Check for the ASTA mark
or the BSI mark
on the
body of the fuse.
If the plug contains a removable fuse cover you must
ensure that it is refitted when the fuse is replaced.
If you lose the fuse cover the plug must not be used until
a replacement cover is obtained.
A replacement fuse cover can be purchased from your
local dealer.
ensure that it is refitted when the fuse is replaced.
If you lose the fuse cover the plug must not be used until
a replacement cover is obtained.
A replacement fuse cover can be purchased from your
local dealer.
If a new plug is to be fitted please observe the wiring
code as stated below.
If in any doubt please consult a qualified electrician.
code as stated below.
If in any doubt please consult a qualified electrician.
IMPORTANT
The wires in this mains lead are coloured in accordance
with the following code:
Blue: Neutral, Brown: Live.
As these colours may not correspond with the coloured
markings identifying the terminals in your plug, proceed
as follows:
The wire which is coloured Blue must be connected to
the terminal which is marked with the letter N or coloured
Black or Blue.
The wire which is coloured Brown must be connected to
the terminal which is marked with the letter L or coloured
Brown or Red.
with the following code:
Blue: Neutral, Brown: Live.
As these colours may not correspond with the coloured
markings identifying the terminals in your plug, proceed
as follows:
The wire which is coloured Blue must be connected to
the terminal which is marked with the letter N or coloured
Black or Blue.
The wire which is coloured Brown must be connected to
the terminal which is marked with the letter L or coloured
Brown or Red.
Before use
Remove the connector cover.
Remove the connector cover.
How to replace the fuse
The location of the fuse differ according to the type of AC
mains plug (figures A and B). Confirm the AC mains plug
fitted and follow the instructions below.
Illustrations may differ from actual AC mains plug.
The location of the fuse differ according to the type of AC
mains plug (figures A and B). Confirm the AC mains plug
fitted and follow the instructions below.
Illustrations may differ from actual AC mains plug.
1. Open the fuse cover with a screwdriver.
2. Replace the fuse and close or attach the fuse cover.
CAUTION!
IF THE FITTED MOULDED PLUG IS UNSUITABLE
FOR THE SOCKET OUTLET IN YOUR HOME THEN
THE FUSE SHOULD BE REMOVED AND THE PLUG
CUT OFF AND DISPOSED OF SAFELY.
THERE IS A DANGER OF SEVERE ELECTRICAL
SHOCK IF THE CUT OFF PLUG IS INSERTED INTO
ANY 13-AMPERE SOCKET.
IF THE FITTED MOULDED PLUG IS UNSUITABLE
FOR THE SOCKET OUTLET IN YOUR HOME THEN
THE FUSE SHOULD BE REMOVED AND THE PLUG
CUT OFF AND DISPOSED OF SAFELY.
THERE IS A DANGER OF SEVERE ELECTRICAL
SHOCK IF THE CUT OFF PLUG IS INSERTED INTO
ANY 13-AMPERE SOCKET.
Figure A
Figure B
Fuse cover
Figure A
Figure B
Fuse
(5 ampere)
(5 ampere)
Fuse
(5 ampere)
(5 ampere)
WARNING: DO NOT CONNECT EITHER WIRE TO THE
EARTH TERMINAL WHICH IS MARKED WITH THE LETTER
E, BY THE EARTH SYMBOL
EARTH TERMINAL WHICH IS MARKED WITH THE LETTER
E, BY THE EARTH SYMBOL
OR COLOURED GREEN OR
GREEN/YELLOW.
THIS PLUG IS NOT WATERPROOF
KEEP DRY.
A A
8
SA-PT350E / SA-PT350EB / SA-PT350EG
Click on the first or last page to see other SA-PT350E / SA-PT350EB / SA-PT350EG service manuals if exist.