Specifications; Troubleshooting - Technics RS-B655 Operating Instructions Manual

Tech n ical Specifications
r CASSETTE DECK SECTION
Deck system
Track system
Heads
Rec/play
Erasing
Motors
Capstan
Reel table drive
Recording system
Bias frequency
Erasing system
Tape speed
Frequency response
NORMAL
CrOz
METAL
Stereo cassette deck
4-track, 2-channel
Permalloy head
Double-gap ferrite head
Quartz direct drive DC motor
DC motor
AC bias
80 kHz
.
AC erase
4.8 cm/sec. (17/aips)
2O Hz-18 kHz
2O Hz-16 kHz (DlN)
2O Hz-18 kHz
20 Hz-17 kHz (DlN)
20 Hz-19 kHz
20 Hz-18 kHz (DlN)
74 dB (CCtR)
66 dB (CCrR)
56 dB (A weighted)
Wow and flutter
Fast forward and rewind times
lnput sensitivity and impedance
Mtc
LINE
Output voltage and impedance
LINE
HEADPHONES
r GENERAL
Power consumption
Power supply
Dimensions (WxHxD)
Weight
o.05% (wRMS)
+ 0 . 1 5 % ( D r N )
Approx. 90 seconds with C-60 cassette tape
0.25 mV/400O-10 kQ
60 mV/47 kO
400 mV/800O
125 mV/8O
(8O-600c))
2 1 W
AC 50 Hzl60 Hz,24OY
4 3 0 x 1 3 5 x 2 9 0 m m
('l 61 sA e" x 51/e" x 1 1 1 3/gz" )
4 . 9 k g ( 1 0 . 8 l b . )
Note:
Specifications are subject to change without notice.
Weight and dimensions are approximate. S/N (signal level:max recording level, CrOz type tape)
Dolby C NR on
Dolby B NR on
Dolby NR off
Troubleshooting Guide
Before requesting service for this unit, check the chart below for a possible cause of the problem you are experiencing. Some simple checks or a
minor adjustment on your part may eliminate the problem and restore proper operation.
lf you are in doubt about some of the check points, or if the remedies indicated in the chart do not solve the problem, refer to the directory of
Authorized Service Centers (enclosed with this unit) to locate a convenient service center, or consult your Technics dealer for instructions.
Problem Probable cause(s)
Suggested remedy
While usinq the tape deck
Tape moves but no sound is
heard,
The volume control of the amplifier is set to its
minimum position.
oAdjust the volume control to the desired level.
The input selector of the amplifier is not set the
"tape" position.
oSet to the "tape" positon.
Distorted sound. The recording level is too high
.Select the appropriate recording level.
Previously recorded sound
has not been erased.
Erase head is dirty.
oClean the head.
Sound output is hoarse or
unsteady.
Heads are dirty.
oClean the heads.
Tape is damaged.
rTry operation with a new cassette; if there is no
problem with the new cassette, discard the damaged
cassette.
Poor sound quality
(especially in the high treble
and low bass ranges).
The correct Dolby noise-reduction button is not set.
.Set it to the correct position.
Sound is low, poortone,
intermittent sound. noise.
Heads, capstan and/or pinch roller are dirty or tape
is damaged.
.Clean the heads, capstan and/or pinch roller, or try a
new cassette.
Recording is not possible. The recording level control is at the "0" position.
.Select the appropriate recording level.
Hlgh-pitched noise
("howling") is heard while a
microphone is beinq used.
The microphone is being used too close to the
speaKers.
.Use the microphone farther away from the speakers
or decrease the volume level.
Matsushita Electric lndustrial Co., Ltd.
Central P.O. Box 288, Osaka 530-91, Japan
RQTO1 578
F0789K1 089
Printed in Japan