Panasonic RQ-218S-E User manual

Service Ma
ORDER NO. ARD-7503021C
nual
Portable Cassette Recorder
RQ-218S RQ-218S-E
Mini Cassette Recorder with Built-in Microphone
RS-218S MECHANISM SERIES
Specifications (Catalog specifications for sales)
Power requirement:
Motor:
Frequency response:
Recording system:
Operation:
Tape speed:
Program time:
National Panasonic
Battery; 6V, (four-UM-3, R6 size dry
batteries)
AC; with optional AC adaptor/charg-
er RP-667, RP-667-E in Europe
Car boat battery: with optional
car/boat adaptor RP-916, RP-914-
E in Europe
Rechargeable battery: with optional
rechargeable battery pack RP-093
Electrical governor motor
100~ 8,000 Hz
AC bias
Pushbutton one-touch operation
with Auto-Stop mechanism
4.8cm/s, (1-7/8 ips)
1 hour with C-60 cassette tape
Fast forward time:
Rewind time:
Track system:
Input:
Output:
Speaker:
Dimensions:
Weigt:
Approx. 270 seconds with C-60
cassette tape
Approx. 150 seconds with C-60
cassette tape
2-track monaural recording and
playback
MIC; sensitivity 0.28mV/applicable
microphone impedance 200 ~
6002 (recommended microphone
WM2202, WM2213N)
DC IN; 6V
MONITOR; 89
REMOTE; for start and stop at hand
5cm, (2"') PM dynamic speaker
8.9cm (W) x 14.2cm (H) x3.8cm (D)
3-1/2"
(W)
x
5-5/8"
(H)
x
1-1/2'(D)
550g, 1-1/4 lbs.
Specifications are subject to change without notice for further improvement.
Matsushita Electric Trading Co., Ltd.
P.O. Box 288, Central Osaka Japan

LOCATION
OF
PARTS
@ Level meter
@ Fast forward/rewind button
@® Playback button
@® Record button
® Stop/eject button
Built-in microphone
@ Pause bution
Volume
control
©
Remote
control
connection
jack
Microphone
jack
@ Monitor jack
@
Tape
counter
and
reset
button
@
Cassette
compartment
cover
Battery compartment
HOW
TO
REMOVE
CASSETTE
LID,
HOW
TO
REMOVE
CHASS!S
SIDE
PANEL
AND
FRONT
PANEL
1.
Remove
4
chassis
holding
screws
(C)
and
1
screw
1.
Remove
4
side
panel
holding
screws
(A)
and
2
front
(D).
panel
holding
screws
(B).
2.
Then
chassis
can
be
removed.
2.
Then
front
panei,
assembly
of
cassette
lid
and
sid
panel can be removed.
j
4
3
E

ADJUSTMENTS
MEASUREMENTS AND ADJUSTMENTS METHOD
A. PRESSURE ROLLER ADJUSTMENT (See fig. 4)
1. Set into playback mode.
2. Connect the spring gauge to pressure roller lever
and pull it in the direction of the arrow as shown in
fig. 4.
3. Measure the tension at the monent when the pressure
roller moves away from the capstan.
Standard pressure: 230+30 gr
4. |f the pressure is out of tolerance, bend the part (a)
of the pressure roller spring in either direction shown
by the arrow until the correct pressure is attained.
Pressure Roller
B. HEAD AZIMUTH ADJUSTMENT (See fig. 5)
1. Play the test tape C-AA.
2. Adjust the screw for maximum output at monitor
jack.
.
Azimuth Adjustment Screw
C. TAPE SPEED ADJUSTMENT (See fig. 6)
1. Play the test tape C-WAT and supply output signal
to frequency counter.
2. Read the value on frequency counter.
Standard value: 3000 Hz+3%
3. If the value is out of tolerance, adjust semi-fixed
variable resistor (Shown in electrical parts location)
on motor governor circuit board and take aim at
3000Hz+1% in order to secure accuracy.
Monitor Jack
D
1
2
3
E
1
2
nm
. RECORDING BIAS CURRENT ADJUSTMENT (See fig. 7)
. Connect 10Q resistor as shown in fig. 7.
. Connect VTVM to both ends of 10Q resistor.
. Set into record mode and read voltage on VTVM.
Standard voltage: 8+1 mV
. If the voltage is out of tolerance, change the short
point A, B, C, of bias oscillation circuit.
To increase, short s% A.
To declease, short s% C.
. LEVEL METER ADJUSTMENT (See fig. 8)
. Supply DC 4.2 V to DC IN jack.
. Set into playback mode and. confirm the indicator
position on level meter is as shown below.
DC4.5V UNIT
Indicator position:
. If the indicator get out of place, adjust VR2 until the
level meter indicates above position.
. OTHER SPECIFICATIONS FOR REFERENCE (NO ADJUSTABLE)
ITEM VALUE REMARKS
Wow & flutter (RMS) less than 0.4% Use 3 kHz test tape (C-WAT).
Takeup torque. 55+15 er Use cassette torque metter (RP-8063).
To obtain 70#A of recording current through the
recording head. Stop the bias oscillation by
unsoldering R30 shown in printed circuit board
view on page 4.
Standard recording input level. 1kHz —72+5 dB
Bias oscillation frequency. 44+5 kHz
DC 7.9+0.7 mA
Erase current.

SCHEMATIC
DIAGRAM
MODEL
RQ-218S,
RQ-218S-E
=
|
|
|
|
Trl
Tr2
Tr3
2SC644(@)(S)
2SC828(R)
ais
2SC828(R)
[i
I
S1-1
Sl-2
ha!
|
rane
ee
Feat
4.2V
b
}
J
|
00000
10
[ll
[12
|
2
B
5
6
R11
820(1/4eW)
| RG
|
2.7K(1/aW)
clo R12
6V68 —3.3K(/aW)
|
i]
|
1 VRI
1OK(A)
> g e).
aN Ve
C6
0.001 | R5 56K(/e 7
RA al
220
ae ae
C20. R20
3V10 —-.2.2K('/eW)
SSS Se Se Se ora
TIM actin
FUSE Oo REMOTE |
sagen
!
(Yaw)
C23
0.01
Pet
oftt>
Js
SN
A
R24
47K("/eW)
'
DC
IN
i]
R30
47(14W)
=
=
;
ADAPTOR
I
eee
|
=>
=
UM3x4
|
|
|
=
=
L
O—-—-O-
O—
—
anaes
ceases
a)
I
L.
co
|
fe
Lo
=
|
R32
R33
I
3
47
|
O
©
|
0
$2
i]
O
$3
|
O
!
bote
See
See
eS
SS
SSS
SS
eee
Se
Sea
eee
NOTE:
TERMINATIONS
(BOTTOM
VIEW)
1.
$1-1~S1.-7......Record/playback
select
switch
(shown
in
playback
position).
DSO
cienees
inven
Power
ON/OFF
switch
(shown
in
OFF
position)
.
1c1
Tr1~Tr6
3:°S3)..nieas
Pause
switch
(shown
in
OFF
position).
AVR: sccncsbdeiseess Volume control.
SB
NR2:
ctisveeceare:
Level
meter
adjustment
VR.
6
_
Resistor
values
are
in
ohms
(Q),
1/4
watt
unless
specified
otherwise.
K=1,000Q.
7.
Capacitor
values
are
in
microfarads
(uF)
unless
specified
otherwise.
Lb
P=Pico-farads.
8.
Voltage
values
are
under
no
signal
conditions
with
volume
at
minimum
position.
E
CoG
Use
VTVM
for
voltage-measurements.
9.
3%
A,
B,
C
are
short
circuit
for
bias
current
adjustment.

WIRING CONNECTION DIAGRAM
MOTOR
BLK
YEL
RED
ORG
CONTROL CIRCUIT
°
BLK
O 0
RED
IC1 BLU
7
5.3v{ — | 14v [ Lis] 27v [ 6.0V 6.0V
STR en een
om } £20
fy V10 :
awe ee 181
Clg
1 .6V C15 0.0
D: .
v v : ¢
902 | Care
0 : P
~ 1
T
rl
SCB28(R)
C18 ina
YE -
R28230( Lm,
wn
df concen NOD SOKURWT-” ORG
Tr6
Cl 5.2V
Bl 0.9V
E[ 0.35V
BLK
WHT BLK
BLK WHT
ae
VU METER
SPEAKER
21
a7
VR2
(B)
VOLUME CONTROL
8
MODEL RQ-218S, RQ-218S-E
BUILT-IN MICROPHONE
RED
RED
WHT] {BLK
Tr3 Tr2
Ci 6.0V C} 2.8V
8] 5.8V Bi 1.5V
Ey} 5.3V E} 0.94V
IN
ACK
ae 4 ce
4 7 UR
3 [ .
10K * 6
/aw) 0.00) 2
7 3V
=
BL Cl * .
( ——-
ox aN
S2 LEAF SWITCH
5.2
RED.
RED
0.75V : ORG WHT
6.0V
HEAD
Meter adjustment VR
BLK
BLK
+x [ec
ee eons é
wT
EEE! coxa rere ee
wn
m
aegnenensesiaanne™
BATTERY CASE
HOLDER
NOTE:
$3 SLIDE SWITCH
REMOTE JACK
IMIC JACK
MONITOR JACK
NOTE:
BLK...... Black
BLU...... Blue
BRN...... Brown
GRY...... Gray
GRN...... Green
L. BLU...Light Blue
NIL ...... No Color Mark
ORG...... Orange
PNK...... Pink
RED...... Red
SLD fcc Shield Wire
VLT...... Violet
WHT. ...White
YEG 33.3 Yellow
The circuit shown in red on the conductor is B circuit.
Values indicated in
[_] are DC voltage between the
chassis and electrical parts.
3% A, B, C are short circuit for bias current adjustment.

EXPLODED
VIEWS
ao S2
M55
M46
: : M46
M47 e a ee es
S. os - a M47
Sa al :
i ee Yee
Oo
M567
M38

ELECTRICAL PARTS LOCATION
Tape speed
adjustment VR
CABINET PARTS
218
(
|
|
|
|
Printed in Japan.

REPLACEMENT PARTS LIST
MODEL RQ-218S, RQ-218S-E
National Panasonic
N
RQ-218S, RQ-218S-E
NOTE:
1. Be sure to make your orders of replacement parts according to this list.
2. “@’ in “Remarks” column indicates new parts.
3. “%” indicates the serrated parts with 18 notches.
NOTA:
1. Habra que asegurarse que los pedidos de piezas de repuesto se hagan segun esta lista.
2. “@’” marcado en la columna “Remarks”, quiere decir que las piezas son nuevas.
3. ‘“S%*” indica las partes dentadas con 18 ranuras.
NOTE:
1. Bien s’assutet de se conformer a la liste suivante pour les commandes de piéces de
rechange. ‘
2. ‘@". dans la colonne “Remarks”, indique les piéces nouvelles.
3. “#" indique les piéces cannelées a 18 crans.
HINWEIS:
1. Bestellen Sie Ihre Ersatzteile genau nach dieser Liste.
2. “@” in der “Remarks” Spalte bedeutet “neue Teile’”.
3. “a” bezeichnet die gezahnten Teile mit 18 Zahnen.
1. BAAR aT, BAKA AT SR
2. [25] (Remarks) —i PZ “OO” JER BRE CAA AEF TL He
3. “Me” FEF RAC Ae Ui 18 El ES SBR GE

RQ-218S, RQ-218S-E
Price (Per Pce.)
Description
Part
No.
Remarks
MECHANICAL PARTS
M1
Stop
Ring
XUC25FT
18
RQ-309S
2
Spring,
Play-Record
Select
QBN1402A
1
®
3
Shaft,
Play-Record
Select
QMN1916
1
®
4
Washer
QBW2016
13
RS-104S
5
Erase
Prevention
Lever
QXRO115
1
|
®
M6
Screw
al
XSN2+3
8
RQ-309S
7
Washer
|
XWA2FX
7
©
8
Eject
Spring
Holder
QXA0423
1
'N)
Mg
Volume
Angle
QMA2400
1
(N)
0
Screw
QHQ1148
4
]
®
11
Play-Record
Select
Lever
|
omarse
1
®
M12
Record
Lever
QXRO119
1
®
13
Rubber
oT
QBG1477
1
ia
®
a Bed
14
Play-Record
Select
Rod
QMR1419A
1
(N]
=.
M15
Nut
XNG2ZEFX
1
®
16
Washer
~[
ean
2
i
rN
M17
Gear,
Supply
Reel
ll
QDG1066
1
=I
@
18
Washer
QBW2014
3
RS-104S
19
Belt
(B),
Tape
Counter
QDBO0206
1
|
TO
20
Washer
QBW2030
3
]
RQ-454S
21
Pulley
QDP1610
i
®
22
Belt
(A),
Tape
Counter
QDB0205
1
iN]
23
Washer
QBK7121
2
RS-610US
24
Spring,
Erase
Prevention
Lever
QBN1398
1
|
®
25
Washer
QBW2010
3
RQ-4545
26
Spring,
Playback
Lever
QBT1768DA
1
'N)
27
Screw
XSN2
+4
2
|
RQ-309S
28
Spring,
Stop
Lever
QBC1244
1
(N)
29
Spring,
Eject
Rod
QBT1770DA
1
@
30
Cord
Stopper
(B)
QTDAOOO1
1
/RQ-215S
31
Guide
Pole
(B)
QMN1914
1
@
32
Stop
Lever
Assembly
QXRO120
(N)
33
Steel
Ball
3¢
QDK1006
1
RS-45.S
i
—- 2—