Yamaha DME24N Service Manual page 261

Q P O
DC CIRCUIT DIAGRAM
1
DME64N only
2
DME24N only
3
to Power
4
Supply
Unit-CN2
to Power
5 Supply
Unit-CN3
6
LM2940CSX-5.0 (X4366A00)
REGULATOR +5V
IC117
TAB IS
GND
7
1
2
3
1: INPUT
2: GND
3: OUTPUT
LM2990SX-5.0 (X4367A00)
8
REGULATOR -5V
IC118
TAB IS
INPUT
1
2
Style Pin
3
9 1: GND
2: INPUT
3: OUTPUT
LM2940CSX-15 (X4365A00)
REGULATOR +15V
IC115
TAB IS
GND
10
1
2
3
1: INPUT
2: GND
3: OUTPUT
11
LM2990SX-15 (X3949A00) NJM78M20DL1A (X4368A00) LM2673SX-ADJ (X4966A00)
12
REGULATOR -15V REGULATOR +20V
DC-DC CONVERTER
IC116 IC109 IC103,105
TAB IS
2
INPUT
1
1
2
3
3
1: SWITCH
1: GND 1: INPUT
2: INPUT
2: INPUT 2: GND
3: C BOOST
3: OUTPUT 3: OUTPUT 4: GROUND
34
N M L K
DME64N only
DC-DC CONVERTER
DC-DC CONVERTER
DME24N: +5D_1, DME64N: +5OPT_1
DC-DC CONVERTER
not installed
DME24N only
DC-DC CONVERTER
DC-DC CONVERTER
SYSTEM RESET
INVERTER
AND
LM2679SX-ADJ (X4967A00) LM2672MX-ADJ (X2536A00)
DC-DC CONVERTER REGULATOR
IC104,106,107 IC110,112,113
Tab is 8
Tab is
7
Ground Ground
6
5
1: C B
1
1
2 2: SS 1
2
3
3 3: SYNC 2
4 4
3
5 5 4: FB
6 1: SWITCH 6 4
5: ON/OFF
7
OUTPUT 7 OUTPUT
6: GND
5: CURRENT ADJUST 2: INPUT 5: CURRENT ADJUST
7: V
6: FEEDBACK 3: C BOOST 6: FEEDBACK IN
8: V
4: GROUND SW
7: SOFTSTART 7: SOFTSTART
J I H G
REGULATOR +20V
DC-DC CONVERTER
DC-DC CONVERTER
REGULATOR –15V
DC-DC CONVERTER
REGULATOR +5V
DC-DC CONVERTER
REGULATOR –5V
DME24N only DC-DC CONVERTER
LM2592HVSX-ADJ (X4364A00) LM2585SX-ADJ (X4360A00) RB060L-40 (V4766800)
DC-DC CONVERTER DC-DC CONVERTER DIODE
IC111 IC114
Metal
Metal
Tab
Tab
GND
GND
1
1
1 2
2 3 2
3 4
4 5
5
1: V 4: FEEDBACK 1: COMPENSATION 4: SWITCH
IN 1: ANODE
2: OUTPUT 5: ON/OFF 2: FEEDBACK 5: V
IN
2: CATHODE
3: GROUND 3: GROUND
F E D C B
DME64N only
to FAN
REGULATOR +15V
DME24N only
DME64N only
1SS355 TE-17 (VT332900) DE5S4M (V2330500) D3FS6 (WB420100)
DIODE DIODE 40V 5A DIODE
4
1
1
1
2 2
2
3
1: ANODE 1 2 4 3 1: ANODE
2: CATHODE 2: CATHODE
DC CIRCUIT DIAGRAM
28CC1-8832050-1 2
A
DME24N/DME64N
DME24N: not installed
DME64N: to MY-CN101
(Page 60)
to DM-CN100 (Page 35)
to DSP-CN102 (Page 45)
DME24N: to DA-CN504
(Page 29)
DME64N: not installed
DME24N: to AD-CN903
(Page 19)
DME64N: not installed
DME24N: not installed
DME64N: to MY-CN102
(Page 60)
to HP-CN302 (Page 55)
RB160L-60 (V8409200) RB160L-40 (VS597600)
DIODE DIODE
1 1
2 2
1: ANODE 1: ANODE
2: CATHODE 2: CATHODE