Yamaha AI-8 Service Manual
YDP-123C
ANALOG INPUT BOX
SERVICE MANUAL
MODEL REFERENCE SERVICE MANUAL
AI8-ML8 LMY2-ML PA011502
AI8-AD8 LMY4-AD PA011503
AI8-ML4AD4
LMY4-AD PA011503
LMY2-ML PA011502
AI8-ML8AB LMY2-MLAB PA011736
AI8-ML8F LMY4-MLF PA011737
CONTENTS
REVISED PAGE LIST ............................................................2-1
SPECIFICATIONS ..................................................................3-1
PANEL LAYOUT.....................................................................3-2
DIMENSIONS .........................................................................3-3
CONNECTOR CIRCUIT DIAGRAM .......................................... 4
BLOCK DIAGRAM ..................................................................... 6
DISASSEMBLY PROCEDURE ................................................. 7
LSI PIN DESCRIPTION........................................................... 11
IC BLOCK DIAGRAM .............................................................. 14
CIRCUIT BOARDS .................................................................. 16
INSPECTION ...................................................................... 21/23
TEST PROGRAM ............................................................... 26/31
ERROR MESSAGES............................................................... 42
PARTS LIST
CIRCUIT DIAGRAM
PA
011505
HAMAMATSU, JAPAN
Copyright (c) Yamaha Corporation. All rights reserved. PDF-K-
****
1
K ’01.03
AI8
REVISED PAGE LIST
ITEM
SPECIFICATIONS
PANEL LAYOUT
DIMENSIONS
BLOCK DIAGRAM
DISASSEMBLY PROCEDURE
IC BLOCK DIAGRAM
CIRCUIT BOARDS
AC, IPC3, DR, PSB, LED1
DC, MB1
IFC2
INSPECTION
TEST PROGRAM
ERROR MESSAGES
<
PARTS LIST
>
ITEM
PAGE
3-1
3-2
3-3
6
7,9
14
16~20
16
19
20
21~22
23~27
42
PAGE
OVERALL ASSEMBLY
SIDE PANEL ASSEMBLY
MOTHER ASSEMBLY
ELECTRICAL PARTS
<
CIRCUIT DIAGRAM
UNC CIRCUIT DIAGRAM 002
IFC2 CIRCUIT DIAGRAM 002
>
ITEM
003
003
004
005
006
007
008
2, 3, 4
4, 5
6
7~12
PAGE
3
4
9
10
11
12
13
14
15
IPC1 CIRCUIT DIAGRAM
IPC3 CIRCUIT DIAGRAM
AICOM CIRCUIT DIAGRAM 002
2-1
16
17
18
AI8
2-2
WARNING: CHEMICAL CONTENT NOTICE!
The solder used in the production of this product contains LEAD. In addition, other electrical/electronic and/or plastic (where
applicable) components may also contain traces of chemicals found by the California Health and Welfare Agency (and possibly
other entities) to cause cancer and/or birth defects or other reproductive harm.
DO NOT PLACE SOLDER, ELECTRICAL/ELECTRONIC OR PLASTIC COMPONENTS IN YOUR MOUTH FOR ANY REASON
WHAT SO EVER!
Avoid prolonged, unprotected contact between solder and your skin! When soldering, do not inhale solder fumes or expose eyes
to solder/flux vapor!
If you come in contact with solder or components located inside the enclosure of this product, wash your hands before handling
food.
IMPORTANT NOTICE
This manual has been provided for the use of authorized Yamaha Retailers and their service personnel. It has been assumed that
basic service procedures inherent to the industry, and more specifically Yamaha Products, are already known and understood by
the users, and have therefore not been restated.
WARNING: Failure to follow appropriate service and safety procedures when servicing this product may result in personal
injury, destruction of expensive components and failure of the product to perform as specified. For these
reasons, we advise all Yamaha product owners that all service required should be performed by an authorized
Yamaha Retailer or the appointed service representative.
IMPORTANT: This presentation or sale of this manual to any individual or firm does not constitute authorization, certification,
recognition of any applicable technical capabilities, or establish a principal-agent relationship of any form.
The data provided is belived to be accurate and applicable to the unit(s) indicated on the cover. The research engineering, and
service departments of Yamaha are continually striving to improve Yamaha products. Modifications are, therefore, inevitable and
changes in specification are subject to change without notice or obligation to retrofit. Should any discrepancy appear to exist,
please contact the distributor's Service Division.
WARNING: Static discharges can destroy expensive components. Discharge any static electricity your body may have
accumulated by grounding yourself to the ground bus in the unit (heavy gauge black wires connect to this bus).
IMPORTANT: Turn the unit OFF during disassembly and parts replacement. Recheck all work before you apply power to the
unit.
WARNING
Components having special characteristics are marked and must be replaced with parts having specification equal to those
originally installed.
IMPORTANT NOTICE FOR THE UNITED KINGDOM
Connecting the Plug and Cord
IMPORTANT. The wires in this main lead are coloured in
accordance with the following code:
BLUE: NEUTRAL
BROWN: LIVE
As the colours of the wires in the main lead of this apparatus may not
correspond with the coloured markings identifying the terminals in
your plug, proceed as follows:
The BLUE wire must be connected to the terminal that is marked with
the letter N (or coloured BLACK).
The BROWN wire must be connected to the terminal that is marked
with the letter L (or coloured RED).
Be certain that neither core is connected to the earth terminal of the
three pin plug.
SPECIFICATIONS
AI8
Sampling frequency (external sync)
Power supply
Power consumption
Dimensions (W x H x D)
Weight
Operating temperature
Power cable length
Cooling fan speed
Accessories
Digital I/Os
I/O connectors
OUTPUT A, B, C
WORD CLOCK IN
WORD CLOCK OUT
Slots
Card
LMY2-ML
LMY4-AD
39.69 kHz – 50.88 kHz
USA and Canada: 120 V, 60 Hz
Others: 230 V, 50 Hz
120 W
480 mm x 141.5 mm x 466.8 mm
15.4 kg
10 – 35 ˚C
2.1 m
always fixed
Connection cable (68-pin, D-sub, half-pitch) x 1, Length: 3 m
Level
RS-422
TTL/75 Ω (ON/OFF)
TTL/75 Ω
Input
Channel 1A or 1B, 2A or 2B
Channel 1 – 4
Type
D-sub, half-pitch, 68-pin connector (female)
BNC Connector
BNC Connector
3-1
UNIT NO.
PHANTOM MASTER
ON
OFF
+48V
POWER
ON/ OFF
12345678
ANALOG INPUT BOX
INPUT UNIT ID
PHANTOM MASTER
ON
OFF
+48V
POWER
ON/ OFF
ANALOG INPUT BOX
*
The illustration shows the AI8 analog input box.
75
IN
CBA
OUTPUT
ON
OFF
OUT
A
B
C
CONTROL
PORT
WORD
CLOCK
75
IN
CBA
OUTPUT
ON
OFF
OUT
A
B
C
CONTROL
PORT
WORD
CLOCK
1
2
3
4
6
7
5
1
INPUT UNIT ID indicator
2
PHANTOM MASTER switch, indicator
3
POWER ON/OFF
4
CONTROL PORT switch
5
OUTPUT connectors A, B, C
6
WORD CLOCK IN jack, ON/OFF switch
7
WORD CLOCK OUT jack
AI8
PANEL LAYOUT
Front Panel
Rear Panel
3-2
DIMENSIONS
455
466.8
480
430
132 (3U)
UNIT NO.
PHANTOM MASTER
ON
OFF
+48V
POWER
ON/ OFF
1234567 8
141.5
ANALOG INPUT BOX
9.5
AI8
Unit: mm
3-3
POWER
TRANSFORMER
FAN
3P
CN600
8P
CN101
14P
CN100
5P
CN127
6P
CN103
2P
CN700
5P
CN002
3P
CN802
2P
CN800
4P
CN701
3P
CN702
4P
CN001
5P
CN510
13P
CN709
13P
CN710
10P
CN711
10P
CN712
13P
CN705
13P
CN706
10P
CN707
10P
CN708
5P
CN511
20P
CN102
14P
CN100
4P
CN101
2P
CN300
4P
CN301
2P
CN302
4P
CN303
12P
CN200
4P
CN400
30P
CN101
14P
CN509
8P
CN507
8P
CN506
8P
CN505
8P
CN504
13P
CN701
13P
CN702
10P
CN703
10P
CN704
8P
CN502
8P
CN501
6P
CN512
10P
CN104
10P
CN103
13P
CN102
13P
CN101
8P
CN503
8P
CN508
4P
CN126
4P
CN125
6P
CN124
4P
CN123
6P
CN122
4P
CN121
20P
CN120
30P
CN119
8P
CN117
8P
CN116
8P
CN115
8P
CN114
8P
CN113
8P
CN112
8P
CN111
8P
CN110
8P
CN118
CN109
100P
CN108
100P
CN107
100P
CN106
100P
CN105
100P
CN104
100P
CN103
100P
CN102
100P
CN101
100P
FG
[CONTROL PORT]
[A]
[B]
[C]
[WORD CLOCK]
[ON]
[OFF]
[75 ]
[IN]
[OUT]
[OUTPUT]
[A]
[B]
[C]
[1]
[2]
[3]
[4]
[5]
[6]
[7]
[8]
SLOT NO.
[ON]
[OFF]
[PHANTOM
MASTER]
[+48V]
[POWER
ON/OFF]
[INPUT
UNIT ID]
**
**
PSB
MB1
UNC
IFC2
IPC1
10P
CN104
10P
CN103
13P
CN102
13P
CN101
IPC1
10P
CN104
10P
CN103
13P
CN102
13P
CN101
5P
CN300
5P
CN200
IPC1
IPC3
DC
DR
AC
LED1
KEC-92522-2
AI8
4
CONNECTOR CIRCUIT DIAGRAM
Circuit Board CN No. Pin No.
DC CN100
2
3
4
5
6
7
8
9
10
11
12
13
14
DC CN101 1
2
3
DC CN200 1
2
3
4
5
6
7
8
9
DC CN300 1
2
DC CN301 1
2
DC CN302 1
2
DC CN303 1
2
DC CN400 1
2
3
4
IFC2 CN509 1
2
3
4
5
6
7
8
9
10
11
12
13
14
MB1 CN126 1
3
1
4
MB1 4
3
MB1 4
3
MB1 5
IFC2 1
2
MB1 2
1
MB1 2
1
MB1
3
IFC2 3
4
MB1 4
IFC2 5
6
MB1
4
3
MB1 4
3
MB1 4
3
MB1 1
MB1 1
MB1 1
DR 1
2
MB1 6
6
MB1 2
1
MB1 5
MB1 2
LED1 1
2
3
4
LED1 1
2
3
4
5
6
7
8
9
10
11
12
13
14
LED1 7
LED1
CN122
CN124
CN127
CN103
CN122
CN124
CN127
CN103
CN127
CN103
CN121
CN123
CN125
CN121
CN123
CN125
CN800
CN122
CN127
CN122
CN124
CN101
CN100
CN101
CN101
CN124
6
5
Circuit Board CN No. Pin No.
MB1
AC CN701 1
4
PSB CN600 1
3
KEC-92522-3
AI8
5
[1]
[2]
[3]
[4]
[5]
[6]
[7]
Register
Decoder
RAM
CPU
DSP5
WC SEL & SYNC DETECTOR
Decoder
Register
DIR2
44.1K
48K
DIR2 2
[8]
Data Bus
Address Bus
SLOT NO.
FPGA
MASTER
CLOCK
48V
/CS1
/CON1
I11
I12
[75 ]
LOCK
WC
/CS2
/CON2
I21
I22
/CS3
/CON3
I31
I32
/CS4
/CON4
I41
I42
/CS5
/CON5
I51
I52
/CS6
/CON6
I61
I62
/CS7
/CON7
I71
I72
/CS8
/CON8
I81
I82
[INPUT UNIT ID]
[PHANTOM MASTER]
[+48V]
[CONTROL PORT]
[A]
[B]
[C]
[WORD CLOCK]
[IN]
[OUT]
[OUTPUT]
[A]
[B]
[C]
WCIC
ID I/O
WCO
DOC
Driver
Receiver
WCO
WCID
[ON]
[OFF]
48V
[ON]
[OFF]
DIR2
DIR2
DIR2
DIR2
IC601
IC307
IC202
IC301
IC302
IC401
IC402
IC404
IC405
IC203
FLASH
IC201
IC101
MB1
IFC2
IPC3
IPC1
WCIB
ID I/O
WCO
DOB
Driver
Receiver
IPC1
WCIA
ID I/O
WCO
DOA
Driver
Receiver
IPC1
LED1
UNC
KEC-92520
1
6
AI8
BLOCK DIAGRAM
[470]
[500] x 32
[470]: Bonding Screw 3.0x6 MFZN2BL (VS863000)
[400]: Flat Head Screw 4.0x8 MFZN2BL (VA221200)
[450]: Oval Head Screw 4.0x8 MFZN2BL (VS153600)
[452]: Oval Head Screw B4.0x8 MFZN2BL (V6221000)
[500]: Bonding Screw 3.0x6 MFZN2BL (VS863000)
[470]
[400]
[400]
[400]
12345678
[450]
[452]
Mount bracket
Mount bracket
Mount bracket
Front panel assembly UNC card assembly
Blank panel
<Right Side View>
<Left Side View>
[450]
[452]
Mount bracket
Fig. 1
DISASSEMBLY PROCEDURE
1. UNC Card Assembly
1-1 Remove the four (4) screws marked [470]. The UNC card
assembly can them be removed. (Fig. 1)
2. Front Panel Assembly
2-1 Remove the UNC card assembly. (See Procedure 1.)
2-2 Remove the thirty-two (32) screws marked [500]. The
blank panel can then be removed. (Fig. 1)
Remove the eight (8) screws marked [450] and the two (2) screws
2-3
marked [452]. Each mount bracket can then be removed. (Fig. 1)
2-4 Remove the six (6) screws marked [400]. The front panel
assembly can then be removed. (Fig. 1)
AI8
3. LED1 Circuit Board
3-1 Remove the front panel assembly. (See Procedure 2.)
3-2 Remove the two (2) screws marked [80]. The LED1
circuit board can then be removed. (Fig. 2)
4. PSB Circuit Board
4-1 Remove the UNC card assembly. (See Procedure 1.)
4-2 Remove the front panel assembly. (See Procedure 2.)
4-3 Remove the seventeen (17) screws marked [430]. The top
panel can then be removed. (Fig. 2)
4-4 Remove the two (2) screws marked [100]. The PSB circuit
board can then be removed. (Fig. 2)
7
[180]: Bind Head Tapping Screw-B A3.0x6 MFZN2BL (VP157900)
[280]: Bind Head Tapping Screw-B A4.0x8 MFZN2BL (VC688800)
Fig. 3
Upper chassis
IPC1 IPC3
[380] [320] [A]
[320][310]
[240]
[280]
[280]
[180]
[A]
Power transformer
Mother assembly
DR
<Top View> <Rear View>
AI8
8
6. Mother Assembly
6-1 Remove the UNC card assembly. (See Procedure 1.)
6-2 Remove the front panel assembly. (See Procedure 2.)
6-3 Remove the top panel. (See Procedure 4-3.)
6-4 Remove the seven (7) screws marked [280]. The mother
assembly can then be removed. (Fig. 3)
5. Circuit Boards and Units
Remove the top panel, each circuit board and unit can
then be removed. (Fig. 3)
[80]: Bind Head Tapping Screw-B 3.0x6 MFZN2BL (EP600230)
[100]: Bind Head Screw 3.0x8 MFZN2BL (VB659000)
[170]: Bind Head Tapping Screw-B A4.0x8 MFZN2BL (VC688800)
[430]: Bind Head Tapping Screw-B A4.0x8 MFZN2BL (VC688800)
Fig. 2
[430] x 17
Top panel
[80]
[170]
[100]
LED1
PSB
<Top View>
Circuit Board and Unit
IPC1
IPC3
DR
Power Transformer
A
310
320
380
240
Screw
Bonding Screw 3.0x6 MFZN2BL (VS863000)
Bind Head Screw A4.0x6 MFZN2BL (EG340290)
Bonding Tapping Screw-B (VN413300)
Bonding Tapping Screw-B (VC688800)
2
2
2
2
4
Ref. No. Screw QTY
[30]: Bind Head Tapping Screw-B 3.0x6 MFZN2BL (EP600230)
[50]: Bind Head Tapping Screw-B 3.0x6 MFZN2BL (EP600230)
[70]: Bind Head Tapping Screw-B 3.0x6 MFZN2BL (EP600230)
Fig. 4
[200]: Bind Head Tapping Screw-B A4.0x8 MFZN2BL (VC688800)
[260]: Bind Head Tapping Screw-B A4.0x8 MFZN2BL (VC688800)
[450]: Oval Head Screw 4.0x8 MFZN2BL (VS153600)
[452]: Oval Head Screw B4.0x10 MFZN2BL (V6221000)
Fig. 5
MB1
[30]
[50]
[70]
[450]
[452]
[260]
[260]
Mount bracket
Side panel assembly
Side panel L
IFC2
• Mother Assembly <Left Side View>
<Right Side View>
<Rear View>
[450]
[452][200]
[200]
Mount bracket
7. MB1 Circuit Board
7-1 Remove the mother assembly. (See Procedure 6.)
7-2 Remove the nine (9) screws marked [30] and the five (5)
screws marked [50]. The MB1 circuit board can then be
removed. (Fig. 4)
8. IFC2 Circuit Board
8-1 Remove the mother assembly. (See Procedure 6.)
8-2 Remove the six (6) screws marked [70]. The IFC2 circuit
board can then be removed. (Fig. 4)
9. Side Panel Assembly
9-1 Remove the UNC card assembly. (See Procedure 1.)
9-2 Remove the front panel assembly. (See Procedure 2.)
9-3 Remove the top panel. (See Procedure 4-3.)
9-4 Remove the mother assembly. (See Procedure 6.)
9-5
Remove the eight (8) screws marked [450] and the two (2) screws
marked [452]. Each mount bracket can then be removed. (Fig. 5)
9-6 Remove the seven (7) screws marked [200]. The side
panel (L) can then be removed. (Fig. 5)
9-7 Remove the three (3) screws marked [170] and the five (5)
screws marked [180]. The upper chassis can then be
removed. (Fig. 2, Fig. 3)
9-8 Remove the seven (7) screws marked [260]. The side
panel assembly can then be removed. (Fig. 5)
AI8
9
AI8
10
10. AC Assembly
10-1 Remove the side panel assembly. (See Procedure 9.)
10-2 Remove the three (3) screws marked [90]. The AC
assembly can then be removed. (Fig. 6)
11. DC Assembly
11-1 Remove the side panel assembly. (See Procedure 9.)
11-2 Remove the four (4) screws marked [60]. The DC
assembly can then be removed. (Fig. 6)
12. DC Circuit Board
12-1 Remove the side panel assembly. (See Procedure 9.)
12-2 Remove the DC assembly. (See Procedure 11.)
12-3 Remove the four (4) screws marked [D60]. The TR holder
can then be removed. (Fig. 7)
12-4 Remove the three (3) screws marked [D80]. The BR
holder can then be removed. (Fig. 7)
12-5 Remove the five (5) screws marked [D90]. The DC cricuit
board can then be removed. (Fig. 7)
[60]: Bind Head Screw A4.0x6 MFZN2BL (EG340290)
[90]: Bind Head Tapping Screw-B A4.0x8 MFZN2BL (VC688800)
Fig. 6
[D60]: Pan Head Screw SP4.0x8 MFZN2Y (EL200020)
[D80]: Pan Head Screw SP4.0x8 MFZN2Y (EL200020)
[D90]: Bind Head Tapping Screw-B 3.0x6 MFZN2BL (EP600230)
Fig. 7
[60] [90]
[D60]
DC assembly AC assembly
TR holder
• DC Assembly• Side Panel Assembly
[D80]
[D90]
BR holder
DC
AI8
11
LSI PIN DESCRIPTION
PIN
NO.
I/O
FUNCTION
NAME
PIN
NO.
I/O
FUNCTION
NAME
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
NC
NC
NC
NC
Vdd
Vss
XI
XO
Vdd
/SYNCI
/SYNCO
Vdd
CKI
CKO
CKSEL
Vss
MCKD
/SSYNC
/IC
/TEST
NC
NC
NC
Vdd
Vss
/CS
/WR
/RD
CA7
CA6
CA5
CA4
CA3
CA2
CA1
Vss
Vdd
CD15
CD14
CD13
CD12
CD11
CD10
CD09
CD08
CD07
CD06
Vss
NC
NC
NC
NC
NC
NC
NC
NC
Vdd
Vdd
CD05
CD04
CD03
CD02
CD01
CD00
/WAIT
Vss
SIO00
SIO01
SIO02
SIO03
SIO04
SIO05
SIO06
SIO07
Vss
Vdd
SIO08
SIO09
SIO10
SIO11
SIO12
SIO13
SIO14
SIO15
Vss
Vdd
SIO16
SIO17
SIO18
SIO19
SIO20
SIO21
SIO22
SIO23
Vss
Vdd
SIO24
SIO25
SIO26
SIO27
NC
NC
NC
NC
I
O
O
I
O
I
O
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
Not used
Ground
Power supply
System master clock input (60 MHz or 30 MHz)
System master clock output (High or 30 MHz)
Ground
Sync. signal input
Sync. signal output
Ground
System clock input (30 MHz)
System clock output (30 MHz)
System master clock select
Power supply
Serial clock input (256 fs)
Serial. signal input
Initial clear
Test mode setting (0: TEST, 1: Normal)
Not used
Ground
Power supply
Chip select
Write enable input
Read enable input
CPU address bus
Power supply
Ground
CPU data bus
Power supply
Not used
Ground
CPU data bus
Wait output
Power supply
Serial data bus
Power supply
Ground
Serial data bus
Power supply
Ground
Serial data bus
Power supply
Ground
Serial data bus
Not used
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
NC
NC
NC
NC
SIO28
SIO29
SIO30
SIO31
Vss
Vdd
SIO32
SIO33
SIO34
SIO35
SIO36
SIO37
SIO38
SIO39
Vss
Vdd
SIO40
SIO41
SIO42
SIO43
SIO44
SIO45
SIO46
SIO47
Vss
SIO48
SIO49
SIO50
SIO51
SIO52
SIO53
SIO54
SIO55
Vss
Vdd
Vdd
SIO56
SIO57
SIO58
SIO59
SIO60
SIO61
SIO62
SIO63
NC
NC
NC
NC
NC
NC
NC
NC
Vss
/POE
Vss
PIO00
PIO01
PIO02
PIO03
PIO04
PIO05
PIO06
PIO07
Vss
Vdd
Vdd
PIO08
PIO09
PIO10
PIO11
PIO12
PIO13
PIO14
PIO15
Vss
NC
PIO16
PIO17
PIO18
PIO19
PIO20
PIO21
PIO22
PIO23
Vss
Vdd
Vdd
PIO24
PIO25
PIO26
PIO27
PIO28
PIO29
PIO30
PIO31
Vss
NC
NC
NC
NC
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
Not used
Serial data bus
Power supply
Ground
Serial data bus
Power supply
Ground
Serial data bus
Power supply
Serial data bus
Power supply
Ground
Serial data bus
Not used
Power supply
Parallel data bus controll signal
Power supply
Parallel data bus
Power supply
Ground
Parallel data bus
Power supply
Not used
Parallel data bus
Power supply
Ground
Parallel data bus
Power supply
Not used
YSS904-F (XV989A00) DSP5 (Digital Signal Processor)
IFC2: IC601
AI8
12
PIN
NO.
I/O FUNCTIONNAME
PIN
NO.
I/O FUNCTIONNAME
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
PE14
PE15
VSS
A0
A1
A2
A3
A4
A5
A6
A7
A8
A9
A10
A11
A12
A13
A14
A15
A16
VCC
A17
VSS
/RAS
/CASL
/CASH
VSS
RDWR / PB5
A18
A19
A20
PB9 /A21
VSS
/RD
/WDTOVF
/WRH
VCC
/WRL
VSS
/CS1
/CS0
PA9 / TCLKD
/IRQ2 / TCLKC
/CS3
/CS2
/IRQ1
TXD
RXD
/IRQ0
PA1 / TXD0
PA0 / RXD0
D15
D14
D13
VSS
D12
O
O
I
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
I
O
I
O
O
O
O
O
O
O
O
O
I
O
O
O
I
O
I
O
O
O
I
O
O
I
O
I
I
O
I
I/O
I/O
I/O
I
I/O
Port E
Port E
Ground
Address bus
Power supply
Address bus
Ground
Row address strobe
Column address strobe (low)
Column address strobe (high)
Ground
DRAM read/write / Port B
Address bus
Port B / Address bus
Ground
Read
Watch dog timer overflow
High write
Power supply
Low write
Ground
Chip select
Chip select
Port A / Timer clock
Interrupt request / Timer clock
Chip select
Chip select
Interrupt request
Data transmission
Data reception
Interrupt request
Port A / Data transmission
Port A / Data reception
Data bus
Ground
Data bus
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
D11
D10
D9
D8
VSS
D7
D6
D5
VCC
D4
D3
D2
D1
D0
VSS
XTAL
MD3
EXTAL
MD2
NMI
VCC
MD1
MD0
PLLVCC
PLLCAP
PLLVSS
PA15 / CK
/RES
PE0
PE1
PE2
PE3
PE4
VSS
AN0 / PF0
AN1 / PF1
AN2 / PF2
AN3 / PF3
AN4 / PF4
AN5 / PF5
AVSS
AN6 / PF6
AN7 / PF7
AVCC
VSS
PE5
VCC
PE6
PE7
PE8
PE9
PE10
VSS
PE11
PE12
PE13
I/O
I/O
I/O
I/O
I
I/O
I/O
I/O
I
I/O
I/O
I/O
I/O
I/O
I
I
I
I
I
I
I
I
I
I
I
I
O
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
O
I
O
O
O
O
O
I
O
O
O
Data bus
Ground
Data bus
Power supply
Data bus
Ground
Crystal oscillator
Mode control
Crystal oscillator
Mode control
Non-maskable interrupt request
Power supply
Mode control
Mode control
PLL Power supply
PLL capacitor
PLL Ground
Port A / Clock
Reset
Port E
Ground
Analog input / Port F
Analog ground
Analog input / Port F
Analog input / Port F
Power supply
Ground
Port E
Power supply
Port E
Ground
Port E
HD6477042AF28 (XY715A00) CPU UNC: IC101
AI8
13
PIN
NO.
I/O FUNCTIONNAME
PIN
NO.
I/O FUNCTIONNAME
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
DAUX
HDLT
DOUT
VFL
OPT
SYNC
MCC
WC
MCB
MCA
SKSY
XI
XO
P256
LOCK
Vss
TC
DIM1
DIM0
DOM1
DOM0
KM1
I
O
O
O
O
O
O
O
O
O
I
I
O
O
O
O
I
I
I
I
I
Auxiliary input for audio data
Asynchronous buffer operation flag
Audio data output
Parity flag output
Fs x 1 Synchronous output signal for DAC
Fs x 1 Synchronous output signal for DSP
Fs x 64 Bit clock output
FS x 1 Word clock output
Fs x 128 Bit clock output
Fs x 256 Bit clock output
Clock synchronization control input
Crystal oscillator connection or external
clock input
Crystal oscillator connection
VCO oscillating clock connection
PLL lock flag
Logic section power (GND)
PLL time constant switching output
Data input mode selection
Data input mode selection
Data output mode selection
Data output mode selection
Clock mode switching input 1
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
RSTN
Vdda
CTLN
PCO
(NC)
CTLP
Vssa
TSTN
KM2
KM0
FS1
FS0
CSM
EXTW
DDIN
LR
Vdd
ERR
EMP
CD0
CCK
CLD
I
I
O
I
I
I
I
O
O
I
I
I
O
O
O
O
I
I
System reset input
VCO section power (+5V)
VCO control input N
PLL phase comparison output
VCO control input P
VCO section power (GND)
Test terminal. Open for normal use
Clock mode switching input 2
Clock mode switching input 0
Channel status sampling frequency
display output 1
Channel status sampling frequency
display output 0
Channel status output method selection
External synchronous auxiliary input
word clock
EIAJ (AES/EBU) data input
PLL word clock output
Logic section power (+5 V)
Data error flag output
Channel status emphasis control code
output
3-wire type microcomputer interface data
output
3-wire type microcomputer interface clock
input
3-wire type microcomputer interface load
input
YM3436DK (XG948E0) DIR2 (Digital Format Interface Receiver)
IC301, 302, 307, 401,IFC2:
402, 404, 405
AI8
HD74LVU04AFPEL (XY102A00)
Hex Inverter
IFC2: IC106
HD74LV04AFPEL (IS000400)
Hex Inverter
IFC2: IC309, 411, 412
UNC: IC105
HD74LV08AFPEL (IS000800)
Quad 2 Input AND
IFC2: IC107, 108, 410
UNC: IC104, 213
TC74VHCT74AF(EL) (XZ226A00)
Dual D-Type Flip-Flop
IFC2: IC602
SN74LV138ANSR (IS013810)
3 to 8 Demultiplexer
UNC: IC211, 212
TC74VHCT245AF
(XV242A00)
TC74VHC245F
(XT487A00)
Octal 3-State Bus Transceiver
IPC1: IC106
IFC2: IC101-105, 501-504, 701-712
UNC: IC102, 204-210
HD74LV273AFPEL (IS027300)
Octal D-Type Flir Flop
IFC2: IC603, 604
AM26LS31CNSR (XU996A00)
Quad Line Driver
IPC1: IC100, 102-105
DS26C32ATMX (XU815A00)
Quad Differential Line Receiver
IPC1: IC101
1
2
3
4
5
6
7
1A
1Y
2A
2Y
3A
3Y
Vss
14
13
12
11
10
9
8
VDD
6A
6Y
5A
5Y
4A
4Y
1
2
3
4
5
6
7
1A
1Y
2A
2Y
3A
3Y
Vss
14
13
12
11
10
9
8
VDD
6A
6Y
5A
5Y
4A
4Y
1
2
3
1A
1Y
42A
52B
62Y
7
VSS
1B
14
13
12
VDD
4A
11 4Y
10 3B
9 3A
8 3Y
4B
INPUTS OUTPUTS
PR CLR CLK D Q Q
L
H
H
L
H
Q
O
H
L
H
H
L
Q
O
X
X
X
H
L
X
X
X
X
f
f
L
H
L
L
H
H
H
L
H
L
H
H
H
1
2
3
4
5
6
7
1CLR
1D
1CK
1PR
1Q
1Q
GND
14
13
12
11
10
9
8
VCC
2CLR
CLR
2D
D
2CK
CK
2PRPR
2Q
2Q
Q
Q
CLR
D
CK
PR
Q
Q
1
2
3
4
5
6
7
A
A
Select
Enable
Output
Output
B
B
C
C
G2A
G2A
G2B
G2B
G1
G1
Y7
Y7 Y5
Y4
Y3
Y2
Y1
Y0
Y6
16
15
14
13
12
11
10
Vcc
YO
Y1
Y2
Y3
Y4
Y5
8
GND
9
Y6
1
2
3
4
5
6
7
20
19
18
17
16
15
14
Vcc
G
B1
B2
B3
B4
B5
B6
B7
B8
8
9
10
12
11
GND
A8
A7
A6
A5
A4
A3
A2
A1
D1R
13
CLEAR
1Q
1D
2D
2Q
3Q
3D
4D
4Q
GND
VCC
8Q
8D
7D
7Q
6Q
6D
5D
5Q
CLOCK
1 20
2 19
3 18
4 17
5 16
6 15
7 14
8 13
9 12
10 11
Q
DCK
CL
D
Q
CK
CL
Q
DCK
CL
D
Q
CK
CL
D
Q
CK
CL
Q
DCK
CL
D
Q
CK
CL
Q
DCK
CL
1
2
3
4
5
6
7
1A
1Y
1Z
2Z
2Y
2A
GND
ENABLE G
16
15
14
13
12
11
Vcc
4A
4Y
4Z
ENABLE G
3Z
3Y
8
9
10
3A
H= high level
L= low level
X= irrelevant
Z= high impedance (off)
OUTPUTSENABLESINPUT
A
GGY Z
H
H
X
X
L
X
X
L
L
H
H
L
H
L
Z
L
H
L
H
Z
H
L
H
L
X
1
2
3
4
5
6
7
INPUT A
INPUT A
OUTPUT A
OUTPUT C
INPUT C
INPUT C
GND
ENABLE
16
15
14
13
12
11
Vcc
INPUT B
INPUT B
OUTPUT B
ENABLE
OUTPUT D
INPUT D
8
9
10
INPUT D
+
-
-
+
+
-
+
IC BLOCK DIAGRAM
14
AI8
SN75124N (XE737A00)
Triple Line Receiver
IPC3: IC300
SN75121 (XE638A00)
Dual Line Driver
IPC3: IC301
1A
1B
2R
2S
2A
2B
2Y
GND
1 16
2 15
3 14
4 13
5 12
6 11
7 10
8 9
Vcc
1S
1R
1Y
3A
3S
3R
3Y
Vcc
2F
2E
2A
2Y
GND
1Y
2C
2B
2D
1A
1B
1C
1D
1E
1F
1
2
3
4
5
6
7
8
16
15
14
13
12
11
10
9
CIRCUIT BOARDS CONTENTS
AC Circuit Board (XW293B0)····················································································· 16
DC Circuit Board (XW293B0)····················································································· 19
DR Circuit Board (XW293B0)····················································································· 16
IFC2 Circuit Board (XW283B0)·················································································· 20
IPC1 Circuit Board (XW285A0)·················································································· 17
IPC3 Circuit Board (XW286B0)·················································································· 16
LED1 Circuit Board (XW286B0)················································································· 16
MB1 Circuit Board (XW282A0)·················································································· 19
PSB Circuit Board (XW293B0) ·················································································· 16
UNC Circuit Board (XW281B0)·················································································· 18
Note: See parts list for details of circuit board component parts.
15
IPC3, LED1:
3NA-V488230
Component side
Component side
Component side
Component side
Component side
to IFC2-CN509
IN
ON OFF
OUT
WORD
CLOCK
POWER ON/OFF
to FANto DC-CN300
to IFC2-CN510 to IFC2-CN511
Power transformerto PSB-CN600
toAC-CN701
AC Cord
to DC-CN400
PANTOM MASTER ON/OFF
CONTROL
INPUT PORT
75
AC Circuit Board
IPC3 Circuit Board
DR Circuit Board
PSB Circuit Board
LED1 Circuit Board
1
3
AC, DR, PSB:
3NA-V412850
ACB
AI8
CIRCUIT BOARDS
16
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