Ha-A/Ha-B - Yamaha n8 Service Manual

W V U T S
HA-A/HA-B CIRCUIT DIAGRAM (n8/n12)
INPUT A
1(5) ∗
INPUT B
1(5) ∗
INSERT I/O
1(5) ∗
INPUT A
2(6) ∗
INPUT B
2(6) ∗
INSERT I/O
2(6) ∗
ANALOG
INPUTS
INPUT A
3(7) ∗
INPUT B
3(7) ∗
INSERT I/O
3(7) ∗
INPUT A
4(8) ∗
HA-A only
HA-B only
INPUT B
4(8) ∗
INSERT I/O
4(8) ∗
∗
: Indication in the parentheses "( )" are
for HA-A of n12.
∗
: （ ）はn12のHA-Aの場合を示します。
HA-A only
28CC1-2001012684 2
R Q P O N
GAIN 1(5)
GAIN 2(6)
GAIN 3(7)
GAIN 4(8)
R1154N120B-TR-F (X7928A00) MA111 (VR496500)
REGULATOR +12V DIODE
IC115 HA-A : D102-106
HA-B (n12 only): D102-105
OP AMP
5
4
1 1: V
OUT
2 2: GND
3 3: V
DD
4: NC
5: CE
M L K J I
∗
OP AMP
∗
∗
OP AMP
∗
D1F60 (VS201100) RB160M-30 (WC549600)
DIODE DIODE
D100 D101
1
1
2
2 2
1: ANODE
1: ANODE 1: ANODE
2: CATHODE
2: CATHODE 2: CATHODE
H G F E D C
OP AMP
HA-A only
<ANALOG INPUT CH1-4/5-8>
OP AMP
OP AMP
: Ceramic Capacitor (chip)
（チップセラミックコンデンサー）
REGULATOR +12V
: Metal Film Resistor (chip)
（チップ金被抵抗）
: Not installed（未実装）
OP AMP
2SC2240 (IC224030) 2SC3324 (V7421700) 2SB1260 (VV540200)
TRANSISTOR TRANSISTOR TRANSISTOR
TR104-107,112-115 HA-A : TR116,118-122 TR117
HA-B (n12 only): TR116,118-121
3
1
3
1
2
2 2
3
3 1 1
1: BASE
1: EMITTER
1 2: EMITTER
2 2: COLLECTOR
3
1 3: BASE 2 3: COLLECTOR
HA-A/HA-B CIRCUIT DIAGRAM (n8/n12)
B A
n8/n12
1
<HA Control>
<n8>
to DM-A-CN105 (Page 9: U2)
<n12>
HA-B (ANALOG INPUTS 1-4):
2
to DM-B-CN105 (Page 9: U2)
HA-A (ANALOG INPUTS 5-8):
to DM-B-CN106 (Page 9:U3)
3
4
5
<n8>
6
to DM-A-CN118 (Page 12: AF15)
<n12>
HA-B
(ANALOG INPUTS 1-4):
to DM-B-CN118 (Page 12: AF15)
HA-A
(ANALOG INPUTS 5-8): 7
to DM-B-CN117 (Page 12: AF4)
8
9
<Power Supply>
<n8>
to PS-CN105 (Page 26: A1)
<n12>
HA-B
(ANALOG INPUTS 1-4):
10
to PS-CN104 (Page 26: A1)
HA-A
(ANALOG INPUTS 5-8):
to PS-CN105 (Page 26:A1)
11
12
13
Model Circuit Board
n8: 1-4ch
HA-A
14
n12: 5-8ch
n12: 1-4ch HA-B
BC559C (WJ075400)
TRANSISTOR
15
TR100-103,108-111
2
1
16
3
2
1: BASE 1: EMITTER
2: COLLECTOR 3
2 2: BASE
3: EMITTER 1 3: COLLECTOR
13
17