Yamaha n8 Service Manual page 228

AF AE AD AC AB AA
1
DM-A/DM-B 002 CIRCUIT DIAGRAM (n8/n12)
2
3
4
D-FF
5
6
7
8
9
10
11
12
13
<TalkBack IN>
OP AMP
14
15
to Wiring Assembly ECM
(Microphone)
16
17 DC-DC CONVERTER
18
19
to PS-CN106
(Page 26: A2)
20
21
LT1936EMS8E (X7243A00) BA50BCOFP (X8260A00)
DC-DC CONVERTER REGULATOR +5V
IC127 IC187
22
8
7
6
5 1: BOOST
2: V
IN
3: SW
1
2
4: GND
3
23 4
5: SHDN
6: FB
7: V
C
8: COMP
10 28CC1-2001012677-2 2
24
Z Y X W V U T
TRANSCEIVER
TRANSCEIVER
AND GATE
D-FF
n12 only
AND GATE
ADC
n12 only
REGULATOR +5V
HSU119 (V9599200) RB551V-30 (V9634300)
DIODE DIODE
D110 D112,113 (n12 only)
2
1
1 2
2
1. INPUT
3
2. GND 1: ANODE
1: ANODE
2: CATHODE
3. OUTPUT
2: CATHODE
S R Q Q O N M
DAC
OP AMP
DAC
OP AMP
n12 only
DAC
OP AMP
AND GATE
D3FS6 (WB420100) RB160M-30 (WC549600)
DIODE DIODE
D111,171 D114,171
1
1 1
2 2
1: ANODE 1: ANODE
2: CATHODE 2: CATHODE
L K J I H G F E
OP AMP
OP AMP
OP AMP
OP AMP
RESET
: Ceramic Capacitor (chip)（チップセラミックコンデンサー）
: Metal Oxide Film Resistor（酸化金属被膜抵抗）
: Not installed（未実装）
DM-A/DM-B 002 CIRCUIT DIAGRAM (n8/n12)
D C B A
n8/n12
<PN-PHONES OUT>
to HP-A-CN800 (n8)
HP-B-CN800 (n12)
(Page 22: C3)
<PN-PHONES VOLUME>
to PN-A-CN700 (n8)
PN-B-CN700 (n12)
(Page 22: G2)
<AUX OUT>
to JK-B-CN104
(Page 14: B5)
2SA1576A (VR936300) 2SD2704K (WC883400)
TRANSISTOR TRANSISTOR
TR102 DM-A (n8): TR125-128
DM-B (n12): TR103-106,125-128
3
3
2
2
1
1
3
3
2
1: EMITTER
2 1: EMITTER
2: BASE
2: BASE
1 3: COLLECTOR
1 3: COLLECTOR
Model Circuit Board
n8 DM-A
n12 DM-B