Panasonic SA-HT340E, Service Manual

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Be careful when disassembling and servicing.
Some chassis components may have sharp edges.
Special Note:
l SMPS Module P.C.B. (SMPS) Replacement
9 Assembling and Disassembling
“ATTENTION SERVICER”
1. This section describes the disassembly procedures for all the major printed circuit boards and main components.
2. Before the disassembly process was carried out, do take special note that all safety precautions are to be carried out.
(Ensure that no AC power supply is connected during disassembling.)
3. For assembly after operation checks or replacement, reverse the respective procedures.
Special reassembly procedures are described only when required.
4. The Switch Regulator IC may have high temperature after prolonged use.
Use caution when removing the top cabinet and avoid touching heat sinks located in the unit.
5. Select items from the following index when checks or replacement are required.
· Disassembly of Top Cabinet
· Disassembly of DVD Lid (When taking out disc manually)
· Disassembly of Front Panel
· Disassembly of FL P.C.B. & Volume P.C.B.
· Disassembly of Mechanism Unit
· Disassembly of DVD Module P.C.B.
· Disassembly of Rear panel
· Disassembly of SMPS Module P.C.B.
· Disassembly of Main P.C.B. & Tuner Extent P.C.B.
· Disassembly of Digital Amp IC
1. This model uses SMPS Module to provide the necessary supply voltages for the unit.
2. It is advisable to replace the SMPS Module once upon detecting of non-working conditions. Do not attempt to repair
or replace it by components.
3. Non-working conditions include:
l With AC supply but no supply voltages after checking at CN2 and/or CN3 respectively.
l Broken fuse. (Substitute compatible part for fuse: K5D312BNA005)
l Wire connection problem.
l Non-working parts in SMPS Module P.C.B. (Check components)
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SA-HT340E / SA-HT340EB / SA-HT340EG