Sanyo RD 203 - User Manual

SERVICE MANUAL
STEREO
CASSETTE TAPE DECK
EUROPE
142 330 00
‘SPECIFICATIONS
Power Source... ..-.-00 2 cee ees AC 120/220V (50/60Hz) Erase Ratio (Overall)
Power
Consumption
...........-
.
14W
|
O28
ek
ks
iota
eae
ae
a
te
ees
.
60dB
Recording System ....-.--....5- AC Bias COP hice aid ede ok wr ot Ge ae ee 60dB
Erasing System..... sok oie a. eG Ge see a ae AC Erasing Metal ..... Rt So a ie ke Sete 60dB
Tape Speed ........ 206 dubs ee 1-7/8ips. £2% Crosstalk (with Fe203)
Wow
&
Flutter.
......
hs
Exes
0.08%
WRMS
Whee
10
PraCk.
tte
6
mete
soe:
60dB
Torque
|
Channel
Separation
(with
Fe203)
...
35dB
PlAY DOCK. o,4-a: Rte a el ait Beat 35 — 45g-cm Harmonic Distortion (K3) |
Past FORWaNG 2 cts isa mae Bs 60 — 90g-cm PO 2S ere sweet, See ise ht Bek eek 1.8%
ROWING. coe oo ek oo ad en es 60 — 90g-cm : EO 2) ita eaeed eek hse acs oe IO 20
Fast Forward Time..... ........ 100sec. (C-60 cassette) MIGTAL i.c: uel: 2.3.08 Art, ae Breas oan 1.5%
ROWING TMG nu ses bare eRe eee 100sec. (C-60 cassette) Input Sensitivity and Impedance
Frequency Response (Overal!, DOLBY : OFF) MICKODNONG 3 sie doh ee gh “. TmV/15k-ohm
Fe203 (7dBband)........... 40 ~ 12.5kHz EINE AING Sa ows Gee tae eae oe 100mV/50k-ohm
CrO2
(7dB
bdnd)
2862
e
hea
Ss
40
—
14kHz
|
OUI
TINT
oc
ctecke
chang
12
ts
Sako:
Seng
~1mV/10k-ohm
Metal (7dB band) ......... ... 40 — 16kHz Output Level and Impedance
Signal
to
Noise
Ratio
|
LINE
OUT
os
a
tele
a
de
500mV/2k-ohm
(47
k-ohm
load)
(According
to
CCIR
method
:
Weighted,
DOLBY
:
ON)
|
DIN
OUTPUT:
(5-2
26
3:
520mV/22k-ohm
(470
k-ohm
load)
OOF
sta
bcd
Skint
sang
th
fee
ee
58dB
Headphone
.............
30mV/500-ohm
(8-ohm
load)
CRZe. «2 ceicp es vgedde re cesta, tik te te 60dB Oscillation Frequency ......... .. 85kHz
We tal’ 325k card ob nba See ee en 60dB Dimensions (WxHxD) ......... 420 x 120 x 205mm
Signal
to
Noise
Ratio
WGIGKT
<iig-ated
feat
ow
6
lee
ace
.».
4,5kg
(According to CCIR method : Weighted, DOLBY : OFF)
Fe203 .......25- Oo tae, ap eee, 50dB
CRO? oor: wee ata Swe ae ee 52dB —Specifications subject to change without notice.—
Wetal
a0
4
oe
a
eh
eed
aces
52dB
:
WM-5270
NOTE: The above mentioned specifications are mainly based on the IHF measurements standard. They can therefore not directly be
compared with specifications based on the DIN standard or other standards.

Sanyo RD 203 Specifications

General

Brand	Sanyo
Model	RD 203
Category	Tape Deck
Language	English

Summary

Specifications

Mechanical Adjustments

Equipment and General Remarks

Lists necessary tools and general notes before performing mechanical adjustments.

Take-Up Torque Adjustment

Adjusts the torque of the take-up reel gear in playback mode.

Flywheel Thrust Adjustment

Adjusts the clearance between the flywheel thrust and flywheel.

Muting Switch Adjustment

Adjusts the clearance between the muting switch contacts.

Mechanical Adjustments Continued

Tape Running Condition Adjustment

Adjusts tape centering for proper playback and prevents curling.

Auto Shut-off Mechanism Troubleshooting

Guides on diagnosing and fixing issues with the auto shut-off feature.

Electrical Adjustments

Equipment Required

Lists necessary instruments and test tapes for electrical adjustments.

Tape Speed Adjustment

Adjusts the tape speed to the correct rotational frequency.

Head Azimuth Adjustment

Aligns the head for optimal tape-to-head contact.

Playback Gain Adjustment

Sets the playback signal level according to calibration tape.

Recording Adjustments (Bias & Gain)

Adjusts recording bias and gain for optimal audio performance.

Exploded View

Cabinet -1 Assembly

Illustrates the exploded view of the main cabinet assembly.

Cabinet -2 Assembly

Shows the exploded view of the second cabinet sub-assembly.

Cabinet -3 Assembly

Details the exploded view of the third cabinet sub-assembly.

Chassis Top -1 Assembly

Illustrates the exploded view of the top chassis section.

Chassis Top -2 Assembly

Illustrates the exploded view of another top chassis section.

Chassis Bottom Assembly

Shows the exploded view of the bottom chassis section.

Dolby NR Schematic Diagram

IC and Transistor Lead Identification

Identifies pinouts for ICs and transistors used in the Dolby NR circuit.

Block Diagram

Control P.C. Board