Yamaha MT 400, Service Manual

Page: 1 / 44

SERVICE MANUAL
PA 011437
19981101-45000
1.95K-998 Printed in Japan ’98.10
HAMAMATSU, JAPAN
CONTENTS
SPECIFICATIONS ................................................ 3/4
DIMENSIONS ........................................................... 4
PANEL LAYOUT .................................... 5
CIRCUIT BOARD LAYOUT ................. 8
BLOCK DIAGRAM ............................ 9
DISASSEMBLY PROCEDURE ............................ 10
IC BLOCK DIAGRAM .................................. 11
CIRCUIT BOARDS ...................................... 12
INSPECTIONS ....................................................... 15/17
TROUBLE SHOOTING ............... 19
CIRCUIT DIAGRAM ............................................... 21
PARTS LIST
4
4TR 4
STEREO
+6
+3
0
–5
–10
+6
+3
0
–5
–10
POWER
AUX SEND
STEREO INPUT
METER SELECT REC SELECT
MONITOR/PHONES
ZERO STOP
PITCH
NOISE REDUCTION SYSTEM
TAPE SPEED CONTROL
3 2 1
R L
REC
REC PLAY REW FF STOP PAUSE
OFF
R
3
OFF
L
2
OFF
R
1
OFF
L
ON
OFF
ON
OFF
SYNC
STEREO
ST+CUE
CUE
MULTITRACK CASSETTE RECORDER
MIC/LINE INPUT
INSERT I/O
INSERT I/O
1 2
1
2
3
4 5
L
6
R
8
R
7
L
4.8/ 9.5
–
+
LEVEL
STEREO
7
L
–8
R
0 10
LEVEL
5
L
–6
R
0 10
LEVEL
MIN MAX
10
9
8
7
6
5
4
3
2
1
0
GAIN
HIGH
10
9
8
7
6
5
4
3
2
1
0
LINE MIC
–12 +12
MID
–12 +12
LOW
–12 +12
AUX
1
0 10
AUX
2
MIX CUE MIX CUE MIX CUE MIX CUE
0 10
0 10
PAN
INPUT-FLIP
TAPE
TAPE
MIC/
LINE
MIC/LINE
to L
L R
1
GAIN
HIGH
10
9
8
7
6
5
4
3
2
1
0
LINE MIC
–12 +12
MID
–12 +12
LOW
–12 +12
AUX
1
0 10
AUX
2
0 10
0 10
PAN
INPUT-FLIP
TAPE
TAPE
MIC/
LINE
MIC/LINE
to R
L R
2
GAIN
HIGH
10
9
8
7
6
5
4
3
2
1
0
LINE MIC
–12 +12
MID
–12 +12
LOW
–12 +12
AUX
1
0 10
AUX
2
0 10
0 10
PAN
INPUT-FLIP
TAPE
TAPE
MIC/
LINE
MIC/LINE
to L
L R
3
GAIN
HIGH
10
9
8
7
6
5
4
3
2
1
0
LINE MIC
–12 +12
MID
–12 +12
LOW
–12 +12
AUX
1
0 10
AUX
2
0 10
0 10
PAN
INPUT-FLIP
TAPE
TAPE
MIC/
LINE
MIC/LINE
to R
L R
4
MULTITRACK CASSETTE RECORDER
www. xiaoyu163. com
QQ 376315150
9 9
2
8 9
4 2
9 8
TEL 13942296513 9 9 2 8 9 4 2 9 8 0 5 1 5 1 3 6 7 3
Q Q
TEL 13942296513 QQ 376315150 892498299 TEL 13942296513 QQ 376315150 892498299
http://www.xiaoyu163.com
http://www.xiaoyu163.com