Yamaha P-85 Service Manual

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A
BCDEFGH
P-85/P-85S
BLOCK DIAGRAM & WIRING
BLOCK DIAGRAM & WIRING
28CA1-2001022995-1
3
1
<BLOCK DIAGRAM>
<WIRING>
LD x 3
GHS 88Keys
5MHz
SYSTEM
RESET
+3.6V
OSC
ADC
DAC
24bit
LPF
REGULATOR
+3.3V
REGULATOR
+5V
REGULATOR
+5V
REGULATOR
+2.5V
CPU (SWL01T)
SLAVE
CPU (SWL01T)
MASTER
FLASH ROM 64M
Program WAVE
FLASH ROM 32M
Program WAVE
FLASH ROM
4M
DRAM 4M
CPU (MKS)
UPD789022GB
17, 38
14, 15,
18
5
4
12
12
4
16
24, 47, 66, 90, 120
29 37 38 39
12
12
16
40, 44,
42, 43
57, 58, 63
49
48
50
26
51
35, 36
42
1-4
14
2
6
10 7
8
8
8
4
11
14
9-12 1, 72, 3
5, 6
18, 31,
32, 34
3
4
1, 2 1, 2
4
22 27 28
3.3V→5V
+5D
X301
X101
IC301 (44P)
IC401 (16P)
IC107 (10P)
IC301 (6P)
TR301, TR302
JK301
JK303
JK401
JK501
JK502
JK302
JK601
IC402 (8P)
LD702-LD704
SW702-SW717
VR701
LD701
SW701
IC501
(3P)
IC502
(3P)
IC401 (3P)
IC102 (8P)
IC103 (8P)
IC701 (8P)
TR401
TR402
IC105 (14P)
IC402 (3P)
IC302 (5P)
IC303 (5P)
IC105 (5P)
IC102 (48P)
IC103 (48P)
IC101 (128P)
IC201 (128P)
IC104 (48P)
IC202 (48P)
+5D
5
+5D
37
+3.3D
+3.3D
4, 15, 46, 89, 119
+2.5D
24, 47, 66, 90, 120
+3.3D
4, 15, 46, 89, 119
+2.5D
37
+3.3D
37
+3.3D
1, 6,
22
+3.3D
+5A
+3.3D
+5A
+5A
+12A
+12V
+5D
RY201
TR201
TR SW
EQ
POWER AMP
6W x 2
LA4625
TR SW
L, R
L, R
+5D
+5A
+3.3D
+3.3D +3.3D
+3.3D
MIDI
I/F
+2.5D
B1-B15
MKS_CLK MKS_RX
DATA
MKS_ACK
LED [1-3]
LSI_ICN
SDO, SYSCLK
BCLK, WCLK
SPOFF
SW [0-4]
SOUT [1-4]
/PSWI
CN2 (27P) CN501 (6P)
CN103 (6P)
CN704 (22P) (PN2)
CN602 (22P)
CN1 (17P)
CN1 (17P)
CN1 (17P)
CN601 (7P) CN301 (7P)
CN102 (4P)
CN501 (25P) CN101 (25P)
CN3 (17P)
CN301 (27P)
/PSWON
HPSW
SPOFF
PSWCNT
DAMPER1, DAMPER2, SOSTE, SOFT
with Heat sink
（放熱版付き）
with a heat sink
（放熱版付き）
HPSW
/PSWI
PSWCNT
/MUTE
HPSW
PSWCNT
SUSTAIN
MIDI_TX MIDI_RX
/MUTE
HPSW
PSWCNT
/MUTE
/MUTE
MKS_IC
MRSTN
33.8688MHz
Control
Address
Data
Control
Address
Data
Control
Address
Data
Control
Address
Data
Control
Address
Data
N11-N16 N21-N26
SW x 16
MASTER
VOLUME
PILOT LED STANDBY/ON
A10KΩ x2
+5A
54
+5D
PN1 PN2
DM
AM
JK
Keyboard
GHL88MGHL88H
GHL88L
HP
PHONE 1
PHONE 2
IN
PEDAL UNIT
DAMPER 1, 2
SOSTE
SOFT
OUT
MIDI
PEDAL
DC IN 12V
SPEAKERS
4Ω
12 x 6 cm
L
R
+–
CN701
CN501
CN103 CN102
CN703
CN704
CN301
GHL88H
PN1
HP
AM
DM
JK
PN2
GHL88M GHL88L
CN1 CN3 CN2 CN1 CN1
CN501
CN101
CN602
CN301
CN601
:
.
B
>
@
=
;
No.
Unit Name
（ユニット名）
Location
（ロケーション）
Parts No.
Connector
Assembly
Source
（配線元）
Destination
（配線先）
Remarks
（備考）
:
@
.
;
=
B
>
Keyboard assembly 2 WK443800 FFC Cable GHL88M-CN2 *3 *3 DM-CN301 *1 *4 27P
M102 (WK74940) FFC 2 DM-CN501 *1 *4 AM-CN101 *1 *4 25P
M103 (WK74950) FFC 3 PN2-CN704 *1 *4 DM-CN602 *1 *4 22P
M104 (WK74960) FFC 4 DM-CN601 *1 *4 JK-CN301 *1 *4 7P
Overall assembly M105 (WK74970) FFC 5 PN1-CN701 *1 *4 PN2-CN703 *1 *4 16P
M106 (WK57110) SP AM-CN102 *1 *5
SPEAKER L
*2 *6 4P
SPEAKER R
M107 (WK57160) HP AM-CN103 *1 *7 HP-CN501 *1 *7 6P
*1 Installation（差し込み）
*2 Manualsoldering（手半田）
*3 Connected（接続済）
*4 AligntheFFCconductorwithconnectorcontact.（FFCの導体とコネクタの接点を合わせる）
*5 WhitewireisadjustedtoPin1mark( △ mark).（白色線材が 1 ピン（△）側）
*6 (+):Whitewire（線材 白）
 (-): Blackwire（線材 黒）
*7 Coordinatewithpolarityoftheconnector.（コネクタの極性に合わせる）

Yamaha P-85 Specifications

General

Type	Digital Piano
Keys	88
Voices	10
Speakers	2 x 6W
Polyphony	64
Effects	Reverb
Weight	11.6 kg
Connectivity	Headphone jack, Sustain pedal input
Demo Songs	50
Included Accessories	Music Rest
Touch Sensitivity	Hard, Medium, Soft, Fixed