Marantz pmd520 User Manual

Fully Independent Double Cassette Deck
PMD520
418S855020 MIT
First Issue 2001.09
PMD520/F1B
R
PMD520
Printed in Japan
Service
Manual
OVERLAP
REC
A B
A+B
HP SELECT
HP LEVEL
PHONES
POWER
AUTO
REW
5
4
3
2
1
0 10
9
8
7
6
FINE SPEED
BALANCE
5
4
3
2
1
0 10
9
8
7
6
REC LEVEL
DC SERVO CONTROLLED MOTOR / AUTO TAPE SELECTOR
3HEAD
L
0 3 +6dB36101520
R
STO P PLA Y REC MUTE REC
AUT O BIAS
TAPE TIME RESET RESET TAPE TIME
CONT
MONITOR
TIMER
TIMER
A+B
BI AS
RESET
BI AS
RESET
HIGH NORM
MONITOR
TAPE SPEED
L
0 3 +6dB36101520
R
DC SERVO CONTROLLED MOTOR / AUTO TAPE SELECTOR
3HEAD
STO P PLA Y REC MUTE REC
AUT O BIAS
FULLY INDEPENDENT DOUBLE CASETTE DECK PMD520
REC/PLAY REC/PLAY
DOLBY BÐC NR HX PRO
QA01
NJM2068DD
(1/2)
1
2
3
8
CA01
100p
CA05
0.1u
A-GND
RA07
2.2k
RA09
3.3k
1 3
2
CA02
100p
QA01
NJM2068
(2/2)
7
6
5
4
RA06
220K
A-GND
RA10
3.3k
1 3
2
RA08
2.2k
RA01
27K
RA03
2.7k
RA04
2.7k
RA02
27K
JA02
4
3
2
1
A-GND
RA05
220k
SA01
3
2
1
6
5
4
JA01
4
3
2
1
0dB
-20dB
Rch
Rch
Lch
Lch
(5)
(6)
(7)
(8)
Lch
Rch
Rch
PA01
WA418S5010
(1)
(4)
(3)
(2)
PA01
QA01
PMD520FB は 74PMD520/02B PMD520U の電源部分の変更 及び 入力 ATT 回路 (PA01) を追加した製品です。
このサービスマニュアルには 74PMD520/02B PMD520U との相違部分のみを記載しております。
その他の部分は 74PMD520/02B PMD520U のサービスマニュアル ( 418S855010 または 4822 725 51174 ) を
参照して下さい。

Marantz pmd520 Specifications

General

Tape Speed	4.76 cm/s
Heads	1 x record/playback, 1 x erase
Track System	4-track, 2-channel stereo
Wow and Flutter	0.08% WRMS
Input	0.25mV (mic)

Summary

Technical Specifications

Level Diagram

Block Diagram

Connection Diagram

Schematic Diagram

Exploded View

Electrical Adjustments

S.R.L Setting

Adjusts audio oscillator to line input jacks for rated recording condition.

Line Output Level Adjustment

Adjusts audio oscillator to line input jacks and VTVM to line output jacks.

Rec/Play-Back Frequency Response Adjustment

Adjusts semi-fixed resistor for frequency response difference between 400Hz and 12.5kHz.