Sony M-2000 Service manual
M-2000/2020
FS-25/80/HU-25
SERVICE MANUAL
Ver. 1.1 2005. 08
• M-2000/2020 are composed of following models.
COMPONENT MODEL NAME
M-2000 M-2020
FOOT CONTROL UNIT FS-25/80
HAND CONTROL UNIT — HU-25
US Model
Canadian Model
AEP Model
UK Model
Australian Model
Model Name Using Similar Mechanism New
Tape Transport Mechanism Type MB-2000-58
SPECIFICATIONS
Tape (MICROCASSETTE)™
(normal position type)
Track system 2-track 1-channel
monaural
Tape speed 2.4 cm/sec. (15/16 ips),
1.2 cm/sec. (15/32 ips)
Tape speed control –10% to +50%
Auto back space Approx. 0/1/3 sec.
Frequency response 250 – 4,000 Hz
(at 2.4 cm position)
Speaker 5 cm (2 inches) dia.
Power output 300 mW
Input MIC (PLUG IN POWER):
minijack, sensitivity 0.3 mV
for 3 kilohm or lower
impedance
Output EARPHONE: minijack, for
an 8 – 300 ohm earphone
Power requirements DC IN 9 V jack accepts the
supplied AC power adaptor
Power consumption 600 mA
Dimensions Approx. 133 × 61.5 × 230
mm (w/h/d)
(5 1/4 × 2 1/2 × 9 1/8 inches)
not incl. projecting parts
and controls
Weight Approx. 0.8 kg (1 lb 12 oz)
Supplied accessories Headphone (1)
Foot control unit (1)
Hand control unit (1) (M-2020)
Cradle (1) (M-2020)
AC power adaptor (1)
Design and specifications are subject to change without
notice.
ATTENTION AU COMPOSANT AYANT RAPPORT
À LA SÉCURITÉ!!
LES COMPOSANTS IDENTIFIÉS PAR UNE MARQUE 0 SUR LES
DIAGRAMMES SCHÉMATIQUES ET LA LISTE DES PIÈCES
SONT CRITIQUES POUR LA SÉCURITÉ DE FONCTIONNEMENT.
NE REMPLACER CES COMPOSANTS QUE PAR DES PIÈCES
SONY DONT LES NUMÉROS SONT DONNÉS DANS CE MANUEL
OU DANS LES SUPPLÉMENTS PUBLIÉS PAR SONY.
SAFETY-RELATED COMPONENT WARNING!!
COMPONENTS IDENTIFIED BY MARK 0 OR DOTTED LINE
WITH MARK 0 ON THE SCHEMATIC DIAGRAMS AND IN
THE PARTS LIST ARE CRITICAL TO SAFE OPERATION.
REPLACE THESE COMPONENTS WITH SONY P ARTS WHOSE
PART NUMBERS APPEAR AS SHOWN IN THIS MANUAL OR
IN SUPPLEMENTS PUBLISHED BY SONY.
MICROCASSETTE ™ TRANSCRIBER
9-953-888-14
2005H04-1
© 2005. 08
Sony Corporation
Personal Audio Group
Published by Sony Engineering Corporation
NOTE:
• Items marked “*” are not stocked since
they are seldom required for routine service.
Some delay should be anticipated
when ordering these items.
SECTION 3
EXPLODED VIEW
11
Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark
13-143-712-01 FOOT, RUBBER
23-923-103-01 BASE
* 31-656-274-11 MAIN BOARD
49-980-787-01 CORD (A) (WITH CONNECTOR)
53-143-709-01 SPRING, TENSION
* 63-923-107-01 HOLDER, HINGE
* 7 9-933-123-01 SHAFT, CONNECTING
8 9-933-124-01 SPRING, COMPRESSION
9 3-923-104-11 PEDAL
10 7-685-547-11 TAPPING +B 3X10, TYPE2 N-S
11 1-771-219-16 CONTROL UNIT, FOOT (FS-80)
– 3 –
HU-25
SERVICE MANUAL
US Model
Canadian Model
AEP Model
UK Model
E Model
HAND CONTROL UNIT
HU-25
SECTION 1
GENERAL
1-1. SCHEMATIC DIAGRAM — FORMER TYPE —
Note:
• All capacitors are in µF unless otherwise noted. pF: µµF
50 WV or less are not indicated except for electrolytics
and tantalums.
• All resistors are in Ω and 1/
specified.
• Power voltage is dc 9 V and fed with regulated dc power
supply from external power voltage jack of this set (M-
2020).
4
W or less unless otherwise
1-2. PRINTED WIRING BOARD — FORMER TYPE —
•Voltage is dc with respect to ground under no-signal
(detuned) conditions.
no mark : STOP
(): REC
[]: PLAY
<< >> : REW
•Voltages are taken with a VOM (Input impedance 10 MΩ).
Voltage variations may be noted due to normal production tolerances.
1-3. SEMICONDUCTOR LEAD LAYOUTS
2SC2785-HFE 1SS119
2
Note:
• X : parts extracted from the component side.
• Y : parts extracted from the conductor side.
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