Yamaha Portable Grand DGX-630 Service Manual page 80

A B C
<Page1>
■ DGX-630/YPG-635 OVERALL CIRCUIT DIAGRAM 1/2 (AM, DJACK, DM, MVR, PB, PJK, PSW, TW)
■ CONTENTS
1
• AM 1 DM
• DJACK 1
• DM 1
• ENC 2 Not Installed
• GHL88H 2
REGULATOR
• GHL88L 2
• GHL88M 2 +1.2V
• MVR 1
• PB 1
• PJK 1
• PNL 2
• PNR 2
REGULATOR
• PSW 1
+3.3V
• TW 1
2
3
4
to F4,C10
RESET
to F4
from H8
to G8
to G3
to H3
to D10
from
G7
from
G9
5
INVERTER
6
CPU (SWX02)
7
AND
8
CPU (SWX02)
9
INVERTER
to F4
P2ROM 128M(WAVE)
10
to F5
from C4
Not Installed
11
Notation for Circuit Diagrams
1. How to identify inter-sheet connectors.
<Page5 J8>
This indicates the location of the counter inter-sheet connector.
Signal name
(The alphabet indicates horizontal direction and the number
DGX-630/YPG-635
indicates vertical direction.)
12
The number indicates the destination page.
A B C
D E F G
LCD CONTROLLER
Not Installed
from C5
CPU (SWX02)
SDRAM 64M
P2ROM 64M (PROGRAM)
MR27T6402L
(1) (48)
(2) (47)
(3) (46)
(4) (45)
(5) (44)
(6) (43)
(7) (42)
(8) (41)
(9) (40)
48P
(10) (39)
from C4
(11) (38)
(12) (37)
(13) (36)
from C4 (14) (35)
(15) (34)
from C9
(16) (33)
(17) (32)
(18) (31)
(19) (30)
(20) (29)
(21) (28)
(22) (27)
(23) (26)
(24) (25)
from B10
FLASH ROM 16M
AND
to GHL88M-CN2
AND
<Page2 I4>
CPU
USB
HIGH SIDE SWITCH
DAC
from C5
OP AMP
Not Installed
28CC1-2001029930 2
D E F G
H I J
Not Installed
LCD
UNIT
from C5
BACK LIGHT
CPU (SWX02)
to PNL-CN01
<Page2 H6>
to B5
to PNR-CN02
<Page2 H9>
from C4
to C4
Not Installed
to B5
DJACK
SUSTAIN
TO HOST
DC/DC USB
CONVERTER
TO DEVICE
CONTRAST
28CC1-2001029941-2 2
WARNING
Components having special characteristics are marked
having specification equal to those originally installed.
印の部品は、安全を維持するために重要な部品です。
交換する場合は、安全の為に必ず指定の部品を御使用ください。
H I J
K L M
PJK
28CC1-2001033066 1
MASTER
VOLUME
MVR
AM
POWER AMP
28CC1-2001029941-4 2
REGULATOR
+5V
PITCH BEND
PB
28CC1-2001029941-5 2
REGULATOR
+5V
（セ）： Ceramic Capacitor
セラミックコンデンサ
（マ）： Mylar Capacitor
マイラーコンデンサ
（金被）： Metal Film Resistor
金属被膜抵抗
（半セ）： MonolithicCeramic Capacitor
半導体セラミックコンデンサ
and must be replaced with parts
Note: See Parts list for details of circuit board component parts.
注）シートの部品詳細はパーツリストを御参照ください。
K L M
N O P
DGX-630/YPG-635
Pedal Unit
TW -L
+
Tweeter-L
-
28CC1-2001029941-7 2
TW -R
+
Tweeter-R
-
28CC1-2001029941-8 2
SP-L
SP-R
PHONES/
OUTPUT
STANDBY/ON
PSW
28CC1-2001029941-6 2
DC IN 12V
+ -
PA-150/PA-5D
(PA-5D for option
except U)
NJM7805FA (XJ607A00)
UPC2905AHF-AZ (X7252A00)
REGULATOR +5V
28CC1-2001029941-1 2
AM: IC101
3
2
1 1. OUTPUT
2. COMMON
3. INPUT
BA50BC0T (X5887A0R)
REGULATOR +5V
AM: IC102
1. INPUT
2. GND
1 2 3. OUTPUT
3
BA33BC0FP (X5889A0R)
REGULATOR +3.3V
DM: IC1
2
1
1. INPUT
3
2. GND
3. OUTPUT
R1172H121D-T1-F (X9292A00)
REGULATOR +1.2V
DM: IC6
4
5 3
2
1 1. CE or CE
2. GND
3. NC
4. V
DD
5. V OUT
DGX-630/YPG-635
N O P
Q
1
2
3
4
5
6
7
8
9
10
11
12
Q