Overall Circuit Diagram; Parts List; Circuit Boards - Yamaha DG60-112 Service Manual

A B
DG60-112 OVERALL CIRCUIT DIAGRAM 2/2 ( MAIN, A-CH, SW )
1
2
3
Power transformer AC cord Cord strain relief
J XV965A00 VZ461100 VV103000
U, C XV966A00 VV205600 VV103100
H XV967A00 VV058200 VV103000
B S XV967A00 VV058300 VV103000
FZ202
FZ201 FZ203 FZ204
250V2A 250V2A 250V1A
J, U, C
4
VV070600 VV070600 VV070300
250VT1AL 250VT2AL 250VT1AL
H, BS
VV071200 VV071500 VV071200
Japanese model
5
U.S.&Canada models
General export model
British model
6
NJM7805FA(XJ607A00) PBU403(VV518200) S1VB20(VS197600)
REGULATOR +5V DIODE STACK DIODE STACK
7
3
2
1
1 : OUTPUT
2 : COMMON
3 : INPUT
WARNING
Components having special characteristics are marked and must
!
be replaced with parts having specifications equal to those originally installed.
Note: See parts list for details of circuit board
8
component parts.
9

CIRCUIT BOARDS

• DM Circuit Board
EFFECT
BLEND
RETURN
10
11
to MAIN 1/5 - W202
12
to MAIN 1/5 - W201
• A-CH Circuit Board
13
• Main 1/5
14
POWER
15
from AC cord
16
(Primary) (Secondary)
Power transformer
Circuit Board FZ202
FZ201 FZ204
Parts No. FZ203
17 2A 2A 1A
J.U.C V366270
250V 250V 250V
T1A L T2A L T1A L
H.BS V366300
250V 250V 250V
DG60-112
A B
C D E
MAIN 1/5
OP AMP
Power
AC cord
Power transformer
(Primary) (Secondary)
MAIN 5/5
A-CH
GAIN MASTER TREBLE HIGH MID LOW MID
FOOT SW
SEND 0dB/-20dB LINEOUT SP MUTE REVERB CH SELECT
to MAIN 1/5 - W204
REVERB PRESENCE BASS LOW MID
REVERB PRESENCE BASS LOW MID
• Main 5/5 • Main 4/5
C D E
F G
to DM-CN1 to DM-CN2
OP AMP
Peak indicator
to DM-CN6
to DM-CN3
BASS PRESENCE REVERB
KEC-54181-3
1
to MAIN 1/5 - W203
Component side
HIGH MID TREBLE MASTER
HIGH MID TREBLE MASTER
to DM-CN5 to DM-CN6
• Main 3/5 • Main 2/5
F G
H I
: Mylar Capacitor
: Flame Proof Carbon Resistor
: Ceramic Capacitor
: Metal Oxide Film Resistor
GAIN MASTER TREBLE HIGH MID LOW MID BASS
KEC-54181-2
1
to DM-CN4
SW
Channel indicator A
AMP select switch A
Channel indicator B
• SW Circuit Board
GAIN
Channel indicator B
AMP select switch B
Component side
GAIN
A/B
(Channel select switch)
to DM-CN5 to DM-CN1
Note: See parts list for details of circuit board
component parts.
H I
J K L
DG60-112
MAIN 2/5
Speaker
MAIN 3/5
MAIN 4/5
PRESENCE REVERB
A/B channel select switch
AMP select switch B
KEC-54181-3
1
Pattern side
Channel indicator A
AMP select switch A
Component side
INPUT
LOW HIGH
Peak
indicator
to DM-CN2
Component side
DM: CNA-V373260
MAIN, A-CH, SW: CNA-V366270
DG60-112
J K L
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
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