Block Diagram; Wiring - Yamaha P-85 Service Manual

<BLOCK DIAGRAM>
Keyboard
GHL88L
GHS 88Keys
CN1 (17P)
CN1 (17P)
GHL88H GHL88M
CN2 (27P)
CN301 (27P)
+5D
DM
17, 38
CPU (MKS)
UPD789022GB
14, 15,
5MHz
IC301 (44P)
18 22 27
X301
+5D
4 4
5
IC302 (5P)
3.3V 5V
1, 2 1, 2
IC303 (5P)
+5D IC105 (5P)
MKS_IC MKS_ACK
5 SYSTEM
29 37 38
MRSTN
RESET
4 4
16
+3.6V CPU (SWL01T)
MASTER
IC101 (128P)
+3.3D
+3.3D
Control
24, 47, 66, 90, 120
12
+2.5D
Address
37
4, 15, 46, 89, 119
Data
FLASH ROM 64M
12
Program WAVE
33.8688MHz
IC102 (48P)
OSC 3
+3.3D
Control
Address
X101
37
Data
FLASH ROM
12
4M
Control
IC103 (48P) Address CPU (SWL01T)
Data SLAVE
Control
+3.3D
IC201 (128P)
Address
+3.3D
1, 6,
Data
24, 47, 66, 90, 120
22 DRAM 4M
+2.5D
4, 15, 46, 89, 119
IC104 (48P)
16
Control
LSI_ICN
Address
Data
12
FLASH ROM 32M
+3.3D
Program WAVE
IC202 (48P)
37
<WIRING>
PN1
CN501
HP
Unit Name Location
No.
Keyboard assembly
M102
M103
M104
Overall assembly M105
M106
M107
PN1 PN2
LD x 3
SW702-SW717
LD702-LD704
5
SW [0-4]
SOUT [1-4]
CN602 (22P)
SPOFF
+5A +5A
28
14 8
1-4
DAC
9-12 2, 3 1, 7
LPF
24bit 5, 6
IC401 (16P) IC402 (8P)
39
LED [1-3]
57, 58, 63
+5D
49 IC501
HPSW (3P)
48
50 /PSWI +3.3D
/MUTE
26
IC502
51 PSWCNT
(3P)
35, 36
+2.5D
18, 31, 42
32, 34
+5A
+3.3D
SDO, SYSCLK
BCLK, WCLK 2
40, 44,
42, 43
10 ADC 7
IC107 (10P)
MIDI_TX MIDI_RX
CN701 CN703
AM
CN103 CN102
CN1
GHL88H
Connector Source
Parts No.
Assembly
2 WK443800 FFC Cable GHL88M-CN2 *3 *3
(WK74940) FFC 2 DM-CN501 *1 *4
(WK74950) FFC 3 PN2-CN704 *1 *4
(WK74960) FFC 4 DM-CN601 *1 *4
(WK74970) FFC 5 PN1-CN701 *1 *4
(WK57110) SP AM-CN102 *1 *5
(WK57160) HP AM-CN103 *1 *7
MASTER
VOLUME
SW x 16
A10KΩ x2
+5A
VR701 8
IC701 (8P)
CN704 (22P) (PN2)
4
AM
/PSWI
L, R
L, R
with Heat sink
IC102 (8P)
REGULATOR
IC103 (8P)
+5V
REGULATOR
IC401 (3P)
+3.3V
REGULATOR
IC402 (3P)
+2.5V
REGULATOR
+5V
HPSW HPSW
/MUTE /MUTE
PSWCNT PSWCNT
JK
+3.3D +3.3D
SUSTAIN
PN2
CN602
CN101
CN501
CN3 CN2
GHL88M
Destination Remarks
DM-CN301 *1 *4 27P
AM-CN101 *1 *4 25P
DM-CN602 *1 *4 22P
JK-CN301 *1 *4 7P
PN2-CN703 *1 *4 16P
SPEAKER L
*2 *6 4P
SPEAKER R
HP-CN501 *1 *7 6P
HP
JK501
PILOT LED STANDBY/ON
SW701 JK502
+5D
LD701
CN501 (6P)
CN103 (6P)
HPSW
SPOFF
/PSWON
TR SW
TR201
+12A
+5A with a heat sink
14
8 POWER AMP
6W x 2
EQ LA4625 11
RY201
IC105 (14P)
4
/MUTE
+12V
TR SW
JK401
TR401
TR402
PSWCNT
DAMPER1, DAMPER2, SOSTE, SOFT
JK303
+3.3D
JK301
6
MIDI
JK302
I/F
IC301 (6P)
TR301, TR302
JK601
28CA1-2001022995-1
CN704
CN601 CN301
CN301
DM
CN1 CN1
GHL88L
PHONE 1
PHONE 2
+5D
L
SPEAKERS
12 x 6 cm
R
DC IN 12V
+ –
DAMPER 1, 2
SOSTE
SOFT
PEDAL UNIT
IN
MIDI
OUT
PEDAL
1
JK