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Micro Hi-Fi System MCD2160/ALL




TABLE OF CONTENTS
Chapter
Location of PC Boards & Versions Variation ........................ 1
Technical Specifications .......................................................2
Safety Instruction .................................................................. 3
Set Block Diagram ................................................................ 4
Set Wiring Diagram ............................................................... 5
Disassembly Instructions ..................................................... 6

Main board
Circuit Diagram ..........................................................7-1

PCBA Layout..............................................................7-2

Display board
Circuit Diagram ..........................................................8-1

PCBA Layout..............................................................8-2

Set Mechanical Exploded View ............................................9

Revision List ........................................................................ 10




Published by Kelly WK1412 Subject to modification 3140 038 61750
(EU)

C+M C+M C+M C

C+M C+M C+M M




Tips: C--Component Level Repair
M--Module Level Rpair
3.Safety instruction




1. General safety
2.Laser safety



Safety regulations require that during a repair:
This unit employs a laser. Only qualified service personnel
. Connect the unit to the mains via an isolation transformer.
may remove the cover, or attempt to service this device
. Replace safety components indicated by the symbol ,
(due to possible eye injury).
only by components identical to the original ones. Any
Laser device unit
other component substitution (other than original type)
Type : Semiconductor laser GaAlAs
may increase risk of fire or electrical shock hazard.
Wavelength : 650nm (DVD)
: 780nm (VCD/CD)
Safety regulations require that after a repair, you must
Output power : 7mW (DVD)
return the unit in its original condition. Pay, in particular,
: 10mW (DVD /CD)
attention to the following points:
Beam divergence: 60 degree
. Route the wires/cables correctly, and fix them with the
Note: Use of controls or adjustments or performance of
mounted cable clamps.
procedure other than those specified herein, may result in
. Check the insulation of the mains lead for external
hazardous radiation exposure. Avoid direct exposure to
damage.
beam.
. Check the electrical DC resistance between the mains
plug and the secondary side:
1) Unplug the mains cord, and connect a wire between
the two pins of the mains plug.
2) Set the mains switch the "on" position (keep the
mains cord unplug).
3) Measure the resistance value between the mains
plug and the front panel, controls, and chassis
bottom.
4) Repair or correct unit when the resistance
measurement is less than 1M .
5) Verify this, before you return the unit to the
customer/user (ref. UL-standard no. 1492).
6) Switch the unit "off", and remove the wire between
the two pins of the mains plug.
4.Set Block Diagram
5.Set Wiring Diagram
6.Disassembly Instructions
7-1.Main board Circuit Diagram
7-2.Main board PCBA Layout
8-1.Display board Circuit Diagram
8-2.Display board PCBA Layout
9.Set Mechanical Exploded View
10.REVITION LIST




V1.0 2014.03.20 initial release