Yamaha MT400 User Manual

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
4TR4
STEREO
+6
+3
0
–5
–10
+6
+3
0
–5
–10
POWER
AUX SEND
STEREO INPUT
METER SELECTREC SELECT
MONITOR/PHONES
ZERO STOP
PITCH
NOISE REDUCTION SYSTEM
TAPE SPEED CONTROL
321
RL
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 6R 8R7L
4.8/ 9.5
–
+
LEVEL
STEREO
7
L –8 R
010
LEVEL
5 L –6 R
010
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
010
AUX
2
MIX CUE
MIX CUE MIX CUE MIX CUE
010
010
PAN
INPUT-FLIP
TAPE
TAPE
MIC/
LINE
MIC/LINE
to L
LR
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
010
AUX
2
010
010
PAN
INPUT-FLIP
TAPE
TAPE
MIC/
LINE
MIC/LINE
to R
LR
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
010
AUX
2
010
010
PAN
INPUT-FLIP
TAPE
TAPE
MIC/
LINE
MIC/LINE
to L
LR
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
010
AUX
2
010
010
PAN
INPUT-FLIP
TAPE
TAPE
MIC/
LINE
MIC/LINE
to R
LR
4
MULTITRACK CASSETTE RECORDER
w w w . x i a o y u 1 6 3 . c o m
Q Q
3
7
6 3
1 5 1 5
0 9 9
2
8 9
4 2
9 8
T E L 1 3 9 4 2 2 9 6 5 1 3 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

Yamaha MT400 Specifications

General

Brand	Yamaha
Model	MT400
Category	Cassette Player
Language	English

Summary

Specifications

Tape Transport

Details on tape type, track configuration, heads, motor, speed, and rewind time.

Mixer

Technical specifications for the mixer section, including frequency response and EQ.

Recorder

Specifications for the recorder function, such as frequency response and S/N ratio.

I/O Specifications

Panel Layout

Input Channels

Monitor / Master Section

Recorder Section

Transport Section

Block Diagram

Disassembly Procedure

Lower Case

Instructions for removing the lower case and identifying screws.

Cassette Mechanism

Procedure for removing the cassette mechanism after the lower case.

Circuit Boards

Steps to remove REC, SUB, and MIX circuit boards.

Circuit Boards

Inspections

Preparation

Initial setup procedures for inspection, including control settings.

Input/Output

Electrical Adjustments

Troubleshooting

Parts List

Overall Assembly

Cassette Mechanism Assembly

Electrical Parts