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Service Manual - Page 1
...sale of YAMAHA are subject to change without notice or obligation to retrofit.
Modifications are, therefore, inevitable and specifications are continually striving to improve YAMAHA products.
I CONTENTS
FRONT PANEL 3 REAR PANEL 3 SPECIFICATIONS... of authorized YAMAHA Retailers and their service personnel. PASSIVE CONTROLLER
YPC-1
SERVICE MANUAL
IMPORTANT NOTICE
This manual has been ...
Service Manual - Page 2
...with lead-free soldering material which is about 30°C to 40°C (50°F ...+Ag+Cu (tin + silver + copper). If lead solder must be used for the repair work.
• Sn + Ag + Cu (tin + silver + copper) •...YPC-1
I REAR PANEL
2 YPC-1
About lead-free solder
The foil side of all P.C.B.s used , be sure to remove leadfree solder from each terminal section of the parts to be replaced...
Service Manual - Page 3
... Input Signal Level 30V
Output Impedance 10 k-ohms or less
Volume Maximum Attenuation 120 dB
Volume LR Tracking Tolerance 1 dB (-100 dB to 0 dB)
Dimensionsੇ๏ (W x H x D) ..... 240 x 75 x 269 mm (9-7/16" x 2-15/16" x 10-9/16")
Weight 3.4 kg (7 lbs. 8 oz.)
* Specifications are subject to change without notice due to product improvements. I INTERNAL...
Service Manual - Page 4
... (1) and 5 screws (2). Set the main unit with its ...ʣ
Bottom Cover
2
1
2
Top Cover
4 3
YPC-1
Cloth
Fig. 1
3. Removal of Rotary Potentiometer, Rotary
Switch (Fig. 3) a. d.
c. c. YPC-1
I DISASSEMBLY PROCEDURES
(Remove parts in the order as numbered.)
1. Spread a soft cloth.... Note) When installing the Escutcheon/VOL, be sure to remove the Sub-chassis.
Service Manual - Page 5
.... Remove the Pin Jack.
e. Remove the solder. f. Removal of PIN JACK (Fig. 4) a. Remove the Tube fitted to the positive (+) terminal. Remove the Nut and Washer. YPC-1
Sub Chassis
Rotary Switch ϩʔλϦʔ48
Knob / D22 ϊϒ%
5
Front Panel
A 6
0 6
8 7
78
Knob / D31 ϊϒ%
9A Slit
εϦ...
Service Manual - Page 6
...)
R 3
4
2
5
1
INPUT
1
2 3
L
5 4
BE BE BE BE BE BE RE RE RE RE RE RE
RE RE RE RE RE RE BE BE BE BE BE BE C. A
B
C
D
E
YPC-1
1 I PRINTED CIRCUIT BOARD (Foil side)
AUDIO OUTPUT
L1
L2
2
R1
R2
RE
BE
BE
RE
MAIN (1) P. B. (Lead Type Device)
RE
BE
BE
RE
3
RE
BE...
Service Manual - Page 8
A
B
C
D
E
YPC-1
1 I EXPLODED VIEW
53
38
50
40
2 39
54
55
12
41
3 37
Included in 12 . 12
50
55 11
51
54
53
4 47
36
51
...
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