Interm cm 55 75 105 155 205 pwramp

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CONTENTS |
Electrical Adjustment Procedure - - - - - - - - - - - - - -1

Specifications . . . . . . . . . . . . . ......... 2

Electrical Parts List ------- - - - - --------- 3, 4, 5, 6, 7, 8

Top and Bottom View of RC. Board ------- . - . . - .9.10,11,12.13,14,15.16,17
Wiring Diagram ......... . . . . ......... 181 '19, 20

B|ock Diagram . . . . . . . . . . . . . ......... 21

Schematic Diagram ................ 22 23, 24, 25, 26, 27
Exploded View of Cabinet & Chassis / Mechanical Parts List . 28, 29, 30,31

Assy Drawing ......... . ......... 32 33 34 35

ELECTRICAL ADJUSTMENT PROCEDURE 7

1. CM-7.5/10.5/15.5/20.5

I IDLE CURRENT
A. Setting
Set the master volume control minimum.
B. Connection

O ><-\
E R158 R140 E 0

R159 R141
[<3 VOLT METER

VR101

AMP BD(4005185800)

C. Adjustment
Adjust VR101 so that the current through the R158 and R140 become 10, 35, 45 milliampere.
When that voltage is;
6~12 millivolt, the current becomes 10 milliampere (CM-7.5, CM-10.5)
30~40 millivolt, the current becomes 35 milliampere (CM-15.5)
40~50 millivolt, the current becomes 45 milliampere (CM-20.5)

2. CM-5.5

I IDLE CURRENT
A. Setting
Set the master volume control minimum.
B. Connection

O ><\
g-w m-E O
VR101(VR201)

R158(R258) R140(R240)
@ VOLT METER
R159(R259) R141 (R241)

AMP B'D(4005187700)

C. Adjustment
Adjust VR101 for CH1 so that the current through the R158 and R140 become 10 milliampere.
Adjust VR201 for CH2 so that the current through the R258 and R240 become 10 milliampere.
When that voltage is 6~12 millivolt, the current becomes 10 milliampere.

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