Yamaha SB168-ES Service Manual page 151

Q P O
DC CIRCUIT DIAGRAM (SB168-ES)
1
to POWER SUPPLY UNIT-CN2
（電源ユニット）
<Page 25: F-4>
2
to POWER SUPPLY UNIT-CN3
（電源ユニット）
3
<Page 25: F-5>
LM2592HVSX-ADJ (X4364A0R)
LM2990SX-15 (X3949A0R)
DC-DC CONVERTER
REGULATOR -15V
DC: IC40
DC: IC60
Metal
TAB IS Tab
INPUT GND
4
1
2
1
3
2 4 1: V
IN
5
3 2: OUTPUT
1: COMMON
3: GROUND
2: INPUT 4: FEEDBACK
3: OUTPUT
5: ON/OFF
LM2940CSX-15 (X4365A0R) LM2940CSX-5.0 (X4366A0R)
5
REGULATOR +15V REGULATOR +5V
DC: IC30 DC: IC10
TAB IS TAB IS
GND GND
1 1
2 2
3 3
6
1: INPUT 1: INPUT
2: GND 2: GND
3: OUTPUT 3: OUTPUT
NJM78M20DL1A (X4368A0R) NJM79M05DL1A (X4822A00)
REGULATOR +20V REGULATOR –5V
DC: IC80 DC: IC50
2
2
7
1 1
3
3
1: INPUT 1: COMMON
2: GND 2: INPUT
3: OUTPUT 3: OUTPUT
LM2676SX-ADJ (X8074A00)
PQ1CY1032ZP (X5090A00)
8
DC-DC CONVERTER
DC-DC CONVERTER
DC: IC1
DC: IC20
Tab is
Ground
1
2
1
3
1: SWITCH 4
5
OUTPUT
6
1: V
IN 2: INPUT
7
5
9 2: V
OUT 3: C BOOST
3: COM (heat sink)
4: GROUND
4: O
adj
5: NO CONNECTION
5: V
soft 6: FEEDBACK
7: ON/OFF
RB160L-60 (V840920R)
DE5S4M (V2330500)
DIODE
DIODE 40V 5A
DC: D90
DC: D2, D21, D40
10 4
1
1
2
2
3
1: ANODE
1 2 4 3
2: CATHODE
11 RB160L-40 (VS59760R) DE3S6M (WE49220R)
DIODE DIODE 60V 3A
DC: D10, D11, D30, D31, D42, DC: D41
D50, D51, D60, D61, D80–82
4
1
1 2
2
3
1: ANODE
1 2 4 3
2: CATHODE
12
22 28CC1-2001041873-1 2
N M L K
DC-DC CONVERTER
DC-DC CONVERTER
DC-DC CONVERTER
REGULATOR +20V
FET CONTROLLER
KDS4148U-RTK/P (WG139300) KTC3875S (WC52940R)
UDZS16B (VU17310R)
DIODE TRANSISTOR
ZENER DIODE 16V
DC: D1, D20 DC: TR20, TR21
DC: ZD20
1
1
2
2
2
1: ANODE
1: ANODE
2: CATHODE
2: CATHODE
J I H G
REGULATOR +5V
REGULATOR +15V
REGULATOR -5V
REGULATOR -15V
DC-DC MODULE
△△△
KTA1504S (WC52950R) HAT2256R-EL-E (WG196400)
TRANSISTOR FET
8
DC: TR100 DC: FT90
7
3
3
1
2 1: SOURCE
2 3
2
2: SOURCE
4
5 6 7 8
1 3: SOURCE
D
1
3 3 4: GATE
2 5: DRAIN
1: EMITTER G
1: EMITTER
4
6: DRAIN
2: BASE 2: BASE
7: DRAIN
1 3: COLLECTOR 1
3: COLLECTOR
S 8: DRAIN
1 2 3
F E D C
SYSTEM RESET
: Not installed（未実装）
: CERAMIC CAPACITOR
△△△ : METAL FILM RESISTOR（金属被膜抵抗）
: METAL OXIDE FILM RESISTOR（酸化金属被膜抵抗）
◆ ◆ ◆
Resistance tolerance : (J) for ones with no indication
6
5
（抵抗許容誤差 : 無記入品＝ （J） ）
Power rating : 1/16 W for ones with no indication
（電力定格 : 無記入品＝1/16W）
Ceramic capacitor temperature characteristics: (F) for ones with no indication
（セラミックコンデンサ温度特性 : 無記入品＝ （F） ）
DC CIRCUIT DIAGRAM (SB168-ES)
B A
SB168-ES
to HAAD2-CN902
(INPUT ch1-8)
<Page 20: O-8>
to HAAD2-CN902
(INPUT ch9-16)
<Page 20: O-8>
to DA-CN001
<Page 17: C-5>
to DM-CN802
<Page 16: A-2>
（セラミックコンデンサー）