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Micro Hi-Fi system BTD2180 / 12




Service
Service
Service



Service Manual
TABLE OF CONTENTS
Page

location of pcb boards and version vanation......................................1
Technical specification.................................................................2-4
Safety instruction...........................................................................5
ESD protection...............................................................................6
Safty precautions...........................................................................7
Set Block diagram..........................................................................8
Set wining diagram.........................................................................9
Disassembly diagram....................................................................10
Main /Display board
Circuit diagram..................................................................11-22
Layout board.....................................................................23-26
Mechanical Exploded view............................................................27
1
Location of pcb boards and version variation




BTD2180




BTD2180
2
Location of pcb boards and version variation


BTD2180




13 13
14 14
11 12
3 5




35
35
35
35 33 32




25 25




25 25.5
0.1 0.12
119 119




0.14 0.14
0.15 0.15

25 25




119 119




0.14 0.14

0.15 0.15

25
25 25 25

-1.2 -1.2
-1.2 -2.2

0.17 0.2
65 65

65 65

40 45
40 45

0.1 0.1
1.2 1.2

-0.2 -0.8

690 690

118 119
0.12 0.12
0.15 0.15
BT SECTION
TEST DATA
NO TEST ITEMS UNIT NOM. LIMIT
1# 2#
1 TOTAL HARMONIC DISTORTION 1KHz % 1.5 2 1 1
2 S/N (1KHz,A-weightde) dBA 76 70 107 108

FREQUENCY RESPONSE AT 40Hz dB