Panasonic RQ-342 User manual

ORDER NO. GAD84065431A2
Service
Manual
AC/Battery Mini Cassette Recorder Mini Cassette
with
Auto-Stop
Mechanism
R
Q
342
(Brown)
This is the service Manual
for the following areas.
| [Z|...For all European
areas except United
Kingdom.
Please use this manual together with the service manual for model
No. RQ-342 (Original) order No. GAD84055421C3.
...For United Kingdom. |
Specifications
Power requirement: AC; with optional Panasonic AC Adaptor RP-31
PARTS COMPARISON TABLE:
Please revise the original parts list in the Service Manual (RQ-342) to conform to the changes shown herein.
If new part numbers are shown, be sure to use them when ordering parts.
Part Numbers
Ref. No. Part Name & Description — Remarks
“Silver Type” (Original) “Brown Type”
M12-1 stopper — QML4226
Stopper Pressure Spring QBC1511
M12-3 stopper Spring — QBT2064 Added
M12-4 Washer 2¢ — XUC2FT Added
FF Button Assembly QXB0832 QXB0835
REW Button Assembly QXB0833 QXB0836
Stop Button Assembly QXB0834 QXB0837
FF/REW Lever Assembly QML4166 QXL1755 Ld
Pause Rod Assembly QXR1045 QXR1051
Supply Reel Table QMG1451 QMB1451
Reel Table Gear-L QDC1370 QDG1370
Back Tension Spring — QBC1478
Bottom Case QKMA0116S QKMA0116C
K2 Battery Lid QKFA4007S QKFA4007C
K
REESE etme
K4 QKMA0115S QKMA0115C
Deleted
Main Name Plate QGSA0105
QFTCO7LO03NZ Deleted
QYH0116H
mm
,
>
“
Panasonic
hasan
Cnet
tating
CL

| Ref. N aware ain a Part Numbers
ef. No. art Name escription 7
| | ie “Silver Type” (Original) ~ “Brown Type”
Pca | Capacitor ——=SsSSCS*=*dCOFODATEMML =| Clete
Capacitor
Capacitor
Capacitor
MECHANICAL PARTS LOCATION
ADDITION
. USS
EL SE
“Brown Type”
ADDITION
L
“Silver Type” (Original) “Brown Type”
CIRCUIT BOARD AND
WIRING CONNECTION DIAGRAM
DELETE
“Brown Type” ASA
Printed in Japan
A.M
“Silver Type” (Original)

ORDER NO. GAD84055421C3
Service
Manual
Mini C t
AC/Battery
Mini
Cassette
Recorder
Sree
with
Auto-Stop
Mechanism
RQ-342
(Silver)
ee ee =
i Ee This is the Service Manual
| for the following areas.
|
| [X ]...For Asia, Latin
America, Middle |
East and Africa
areas.
Specifications
Power requirement: Battery; 3V (two UM-3, R6 size dry batteries)
[x]...AC; with optional AC adaptor RP-34
Motor: Electric governor motor
Power output: 300mW...RMS (max.)
Frequency response: 200~7,000 Hz
Tape speed: 4.8cm/s
Track system: 2-track monaural recording and playback
Fast forward and rewind time: Approx. 145 seconds with C-60 cassette tape
Jacks: Mic; sensitivity 0.25mV/applicable microphone impedance
2002-6002
DC in; 3V
Monitor; 8
Speaker: 4.5cm PM dynamic speaker
Dimensions: 91.5mm(W)x135.5mm(H)x37mm(D)
Weight: 340g, without batteries
Design and specifications are subject to change without notice.
Lo = Matsushita Electric Trading Co., Ltd.
National P.O. Box 288, Central Osaka Japan

LOCATION OF CONTROLS AND COMPONENTS
@) Monitor Jack [82/M3 (3.54)]
(2) Microphone Jack (M3/3.54) @ Built-in Microphone
(3) Volume Control
ee:
am
@) Stop/Eject Button
(2) Speaker
(5)
Record
Button
(4.5cem/4Q)
(6) Rewind/Review
Button
Supply Input
Jack
[DC IN 3V/5.59]
(7) Play Button
Fast Forward/Cue
Button
Battery
| Compartment
Cassette Compartment Cover
(9) Pause Button
TO
ATTACH
HANDSTRAP
@
Cue
and
Review
¢ Automatic Stop
When the tape comes to its
end during playback (or
recording), the tape stops
moving automatically, the
Play (and Record) Button
returns to its original
position, and the power
source is turned off.
If, during tape playback, the Fast Forward/Cue
Button (or the Rewind/Review Button) is partially
pressed, the tape will be moved rapidly forward (or
rewound) and the tape sound can be heard (although
garbled) from the speaker as long as the button is
partially pressed. When the button is pushed
further, the playback sound may no longer be heard.
DISASSEMBLY INSTRUCTIONS
(A)
Ref. No. Procedure Remove —.
Bottom Case 4 screws (2.625)
1 1
Main Circuit Board | Screw (2x4)

RQ-342
RQ-342
1 2 3 4 5 6 7 8
f\
Tl
C
DI
f\
G
R
f\
Numbering
System
of
Capacitor
SC H EM Mi Example
: 2 7 ECKD 1H 102 z F
.
e
_
Type
Voltage
ane
Tolerance
Peculiarity
Q1 Q2 IC1 ECEA _50 R47
Sp beac 2SC2021LN F(R,S) S38 $1-4 28C2021 F(R,S) [BA51 5] Type Voltage Peculiarity Value
,
[2SC2021]
[2802021]
POWER
AMP
(0.47uF)
A PLAY EQ/MIC AMP A.G.C. = o
(11) Voitage
Capacitor Type ECEA Type Dihers Tolerance
ECEA: Electrolytic OJ :63V 2H :500VDC | C: +0.25pF
Saeateeae
A)
ECCD:
Ceramic
1A
10V
1:
100V
J
45%
CONDE
)
ECKD:
Ceramic
1C:16V.
|
DKC:400VAC
|
K:
10%
MICROPHONE
C16
470P
ECQM:
Polypyester
1E
:25V
Z
:
+80%,
-20%
ECQP: Polypropylene 1H: 50V P: +100%, -0%
cy ECET: Electrolytic 1V :35V
L.SV ECEA N: Non Polar 50 : 50V
:
Electrolytic
25
:25V
QCUQO: Ceramic (Chip Type) ; 16 : 16V 7 -
Ne Numbering Syst f Resist
a MONITOR umbering System of Resistor
J1 . Ll «| Example.
(2) (8Q) ERD 25 F J 101
MIC | Type Wattage Shape Tolerance Value
(1002)
B
ERX
2
AN
J
_2R2
Type Wattage Shape Tolerance Value
e (2.2Q)
SPE AKER Resistor Type _ Wattage Tolerance
ERD: Carbon 10: 1/8W J:+5%
| (4Q) ERO: Metal Film 12: 1/2W
ERX: Metal Film 25. 1/4W
ERQ: Fuse Type Metal 1:1W
RRD: Carbon (Chip Type) 18: 1/8W
: REPLACEMENT PARTS LIST
A)
CAPACITORS
C24
ECEASOZ1
C8
0.012
shiseeeeeee
C
Se
a
=>
C4
ECFDD223MXL
RESISTORS
Hean
e
O
Gs
EGEAIASE70,
|
R1
—
ERDASFUI09.
<-> ap
HEAD v ) C3 ECEA1AS470 R1 ERD25FJ103
R7 12K $2 C4 ECFDD472MXL | R2,3 ERD25FJ222
C5 ECEA50ZR47 R4 ERD10TJ822
: 0 ~O DV J3 C6 ECKD1H102Z2F | R5 ERD10TJ103
2) C7 ECKD1H101KB | R6 ERD10TJ124
a - DC IN (3V) C8 ECFDD123MxL_ | R7 ERD10TJ123
C9 ECKD1H271KB R8 ERD10TJ332
a
x
BATT
C
10
ECEASOZR22.
|
RQ
ERD25FU471
(8) =O R 10 ERD10TJ102
C 12 ECEA50Z1
C 13 ECEA1AS101 R 1 ERD25FJ102
Bae,
|
,
C14
ECEA1CS330
R1
ERD10TJ560
5 = C 15 ECEA1AS101 R14 ERD10TJ122
COMPARATOR Secu ; ° C 16 ECKD1H471KB | R1 ERD10TJ153
:
C17
ECEA50ZR1
R14
ERD10TJ561
D
C
18
ECEA1AS101
R14
ERD25FJ470
C19 ECEA1HS100 ERD25FJ390
eX) C 20 ECEA0GU471 ERSB39JR40
Gera ERD25FJ1R2
REFERENCE ‘ C21 ECFDD123MXL ERSB15J103
VOLTAGE C 22 ECEAS50ZR1
C 23 ECEA1AS101 ERD25FJ821
@ @ C23
SPECIFICATIONS 6V100 —
Part Name & Description
| eee 1kHz:
Standard recording input level INTEGRATED CIRCUITS
oon MIC: -72+3dB Saas
R22 BA515 Integrated Circuit
250 Hz: —4+5dB 1.2 300 (B) AN6612 Integrated Circuit
B : ;
Overall
frequency
response
De
rae
TRANSISTORS
, - ee es 28C202 T
E
[AN6612]
[2SB909]
1
ransistor
Playback output level MOTOR CONTROL MOTOR DRIVE 2SB909 Transistor
*
Use
test
tape:
More
than
0.8V
ES
TS
©
DIODE
...QZZCFM (315Hz, OdB)
NOTES: MA161 Diode
e $1-1—S1-5 ...... Record/playback select switch (shown in playback position). ¢ Described in the schematic diagram are two types of numbers; the supply
speanet OS 2 i. cup ence aineees Power ON/OFF switch (shown in OFF position). parts number and production parts number for transistors and diodes. _VARIABLE RESISTORS _
Test tape OVAL cccsc tear bibins Volume control. One type of number is used for supply parts number and production parts RVV1F1A14 Variable Resistor
OV 2 ines Tape speed adjustment VR. number when they are identical. QVNKOAA00301 Variable Resistor
e Resistance are in ohms (2), 1/4 watt unless specified otherwise. e.g. Q1
K = 1,0002. 2SC2021LNF(R,S)—— Production parts number SWITCHES
¢ Capacity are in microfarads (uF) unless specified otherwise. or 2SD636H(R,S)
P = Pico-farads. [2SC2021LNF] Supply parts number QS$S6222 ecb eae as
BA es ae ec/Play Selec
4 (Dummy load) All voltage value Shown in circuitry are under no signal condition and D2 . QSB0320 PeatSwitch
playback mode with volume control at minimum position. eae. Production parts number (Play ON/OFF)
Notes: 1. Cut the speaker lead wire. For measurement, use VTVM. [SM112] Supply parts number
F 2. Connect 42 instead of speaker. ¢( > ) this arrow indicates the flow of the playback signal. ¢ The supply parts number is described alone in the replacement parts list. JACKS
¢ ( m® ) this arrow indicates the flow of the recording signal. .
° ( tf ) this arrow indicates the flow of the playback and recording signal in e This schematic diagram may be modified at any time QJA0303 M3 Jack (Mic/Monitor)
combination. with the development of new technology. meeelee PO Taek
—3-
a
eee
4
CIRCUI
ELECTRE
CONDENS
MICROPH¢
J2
MONITOR
(
|
TERMINATIOQ
NOTES:
e The circuit sho
the back side d
e All voltage val
playback mode
For measurem@
e The circuit }
with the de |

RQ-342
RQ-342 RQ-342
4
5
6
7
8
4
3
2
1
Or
eta
BOARD
AND
WIRING
CONNECTION
DIAGRAM
chet
CIRCUIT
:
.
ECKD
1H
102
z
F
.
e
ee
Type
Voltage
oe
a
a
i
a
ee
ee
p
Q2
|
IC1
ECEA
50
M
R47
A
RECORD/
—
2SC2021
F(R,S)
BOWE
ANE
Type
Voltage
Peculiarity
alee.
EF
LECTR
ET
PLAY
BAC
K
BATT
=
RY
BATTE
RY
[2SC2021]
a
AL
(A
TERMINAL
(B
A
Q
A.G.C.
—
=
CONDENSER
HEAD
TERMINAL
(A)
4
(B)
Capacitor
Type
EcEA
TIRE
Aig
Tolerance
a
M
|
C
RO
P
H
O
N
E
4
ECEA:
Electrolytic
OJ
:63V
|
2H
:500VDC
|
C:+0.25pF
BLK
ECCD:
Ceramic
1A
:10V
1
:
100V
J:
+5%
ECKD:
Ceramic
1C
:
16V
DKC
:
400VAC
|
K:
10%
C16
470P
;
ECQM:
Polypyester
1E
:
25V
Z:
+80%,
-20%
RED
ECQP:
Polypropylene
1H:
50V
P:
+100%,
-0%
ee
se
Spates
aka
ascaes
ECET:
Electrolytic
1V
:35V
¥
.
ECEA
N:
Non
Polar
50
:
50V
Electrolytic
25
:
25V
7
3
QCUO:
Ceramic
(Chip
Type)
16
:16V
S2:
POWER
ON/OFF
eonrenT
YF
ie
Numbering
System
of
Resistor
TERM
|
NAL
(C)
2)
MONITOR
me
Example
:
(3)
(82)
ERD
25
F
J
101
=
|
re
Type
Wattage
Shape
Tolerance
Value
=
(1009)
B
ERX
2
AN
J
2R2
IC2
Type
Wattage
Shape
Tolerance
Value
saps
Mea
a
ee
ae
aes
i
1
|
0.05V
|
5
|
0.03V_
i
SPEAKER
es
coyeee
ef
tates
|
Toes
p24
48V
|
6
|
078v
|
|
ol
(42)
ERO:
Metal
Film
12.
1/2W
|
3
|
0.12V
7
|
2.35V
}
ERX:
Metal
Film
25:
1/4W
af
no
ef
eennmne
of
ERQ:
Fuse
Type
Metal
1:1W
i
Se
V
8
|
1.44V
e
RRD:
Carbon
(Chip
Type)
18:1
|/8W
Ey
ge
een
CIEL
ce
A
ee
Q3
REPLACEMENT
PARTS
LIST
pomp
|B
i
2.35V
|
Rld
©
|
C
|
1.44
|
mae
LAK
CAPACITORS
C
24
ECEA50z1
Pe
3.0V
|
R16
ny
C1
ECFDD223MXL
RESISTORS
,
560
C2
ECKD1H222ZF
°
C3
ECEA1AS470
1
ERD25FJ103
Q3
30
$2
C4
ECFDD472MXL
2%
ERD25FJ222
IC4
Leay
.
C5
ECEAS50ZR47
4
ERD10TJ822
eran
Oe
@
—
J3
Cé6
ECKD1H102ZF
5
ERD10TJ103
1
|
1.5V
|
2)
C7
ECKD1H101KB
6
ERD10TJ124
at
NE
a
DC
IN
(3V)
C8
ECFDD123MxL_
|
R7
ERD10TJ123
!
eee
cg
ECKD1H271KB
8
ERD10TJ332
ae
i
1.48V
|
BATT
C
10
ECEA50ZR22
9
ERD25FJ471
ae
ee
:
em)
1
ERDI0TJ102,—
fp
RR
mT
ow ce
Se
me
we
ws
|
4
14
45V
3V
Cis
ECKD1H102ZF
1
ERD25FJ822
J
jo
C2
ECEAS50Z1
3.
OV
C13
ECEA1AS101
ERD25FJ102
0
V
oe
7.
6
OV
‘
C14
ECEA1CS330
ERD10TJ560
ee
We
ae
—
C15
ECEA1AS101
ERD10TJ122
|
wo
gs
OV.
°
°
C
16.
ECKD1H471KB
ERD10TJ153
C
aon
OV
can
eearoereree
Car
ECEA50ZR1
ERD10TJ561
{|
ov
|
8
1.45V
|
C
18
ECEA1AS101
ERD25FJ470
peep.
et
ee
9
kK
9
B5V
D
C19
ECEA1HS100
ERD25FJ390
J2
som
fesse
ee
°
C
20
ECEA0GU471
ERSB39JR40
rae
ERD25Fu1R2
MONITOR
HT
|
10
2.75V
REFERENCE
C21
ECFDD123MXL
ERSB15J103
:
(11)
3.0V
|
VOLTAGE
;
BLK
AW
+
ieetitig)
ose
|
C
22
ECEA50ZR1
121
1.45V
C
23
ECEA1AS101
ERD25FJ821
ame
eee
ef
)
(2)
x
23
6V100
Part
Name
&
Description
33
INTEGRATED
CIRCUITS
DC
IN
BA515
Integrated
Circuit
AN6612
Integrated
Circuit
TER
INATIO
S
:
M
N
TRANSISTORS
IC2
Q3
pe
es
NOTES:
ji
BLK
......Black
[AN6612]
eeceuel
eS
epsie’
|
Hane
Yellow
“note
BLU
|...
Blue
E
MOTOR
CONTROL
MOTOR
DRIVE
BRN
Brown
.
0
0
0
ee
8
DIODE
Cathode
GRY......
Gray
‘
GRN__...Green
:
Cao—_}q—|_
oA
|
|
eee
|
meno)
piege
.
L.
BLU
...Light
Blue
ect
switch
(shown
in
playback
position).
¢
Described
in
the
schematic
diagram
are
two
types
of
numbers;
the
supply
NIL
......
No
Color
Mark
>h
(shown
in
OFF
position).
parts
number
and
production
parts
number
for
transistors
and
diodes.
_VARIABLE
RESISTORS
_
D1
ORG
...Orange
One
type
of
number
is
used
for
supply
parts
number
and
production
parts
RVV1IF1A14
Variable Resistor
PNK......
Pink
ant
VR.
number
when
they
are
identical.
QVNKOAA00301
Variable Resistor
RED
......Red
unless
specified
otherwise.
e.g.
Q1
NOTES:
.
SLD......
Shield
Wire
2SC2021LNF(R,S)——
Production
parts
number
SWITCHES
e
The
circuit
shown
in
n
the
conductor
indicates
printed
circuit
on
See
ee
VIE
sauhe
Violet
Ss
specified
otherwise.
or
2SD636H(R,S)
the
back
side
of
the
printed
circuit
board.
WHT......White
(2SC2021LNF]
Supply
parts
number
QSS6222
eee
eee
°
All
voltage
values
shown
in
circuitry
are
under
no
signal
condition
and
YEL
......
Yellow
re
under
no
signal
condition
and
D2
|
QSB0320
—
ys
foe
playback
mode
with
volume
control
at
minimum
position.
it
minimum
position.
|
1$R35200-—_—-——
Production
parts
number
(Play
ON/OFF)
For
measurement,
use
VTVM.
[SM112])————————
Supply
parts
number
ee
;
of
the
playback
signal.
*
The
supply
parts
number
is
described
alone
in
the
replacement
parts
list.
:
JACKS
e
The
circuit
board
diagram
may
be
modified
at
any
time
F
of
the
recording
signal.
. :
es
:
;
:
of
the
playback
and
recording
signal
in
¢
This
schematic
diagram
may
be
modified
at
any
time
QJA0303
M3
Jack
(Mic/Monitor)
with
the
development
of
new
technology.
enue
penseek
with the development of new technology.

@ ADJUSTMENT
ITEM
Head azimuth
Tape speed
MEASUREMENT
POINT
Monitor jack
(8kHz, —20dB)
Monitor jack
MEASUREMENTS
AND
ADJUSTMENTS
@ ALIGNMENT INSTRUCTION
READ
CAREFULLY
BEFORE
ATTEMPTING
ALIGNMENT
1. Make sure heads are clean.
4. Set volume control to maximum.
2.
Make
sure
capstan
and
pressure
roller
are
clean.
3.
Judgeable
room
temperature:
20+5°C
(68+9°F)
ADJUSTMENT
SPECIFICATION POINT
Maximum Head adjustment
output screw
QKMA0116S
K 10 QGT1498
K 11 XQN17B28ZF
K 12 WM034CZ
K 13 QBG1725
K 14 EAS45P111S
K 15 XSN2+4
K 16 XWC2B
K 17 QGSA0105
Speaker
A2 QYH0116H
A3 QQT3692
QPAA0107 Pad
Service Notes for the Supply Reel Table (M67) and Reel Table
Gear-L (M68)
The supply reel table and reel table gear-L sandwiches the main base plate
as shown in Figure A. When replacing them, pull hard on the part(s) to be
replaced.
When assembling, refer to Figure A, and push the Supply reel table and reel
table gear-L with your fingers.
base
plate
to
the
top
of
the
supply
reel
table
is
12.0mm
when
the
supply
reel
table is lifted.
—- 6—
Part Name & Description
CABINET PARTS
Bottom Case
Tapping Screw @2.6 x 25
(Bottom Case M’tg)
Cassette Lid Assembly
Cassette Llid Spring
Battery Terminal-A
Battery Terminal-B (+)
Battery Terminal-C (—)
Volume Knob
K 2 QKFA4007S Battery Lid
K3 XTN26 + 25B
K 4 QKMA0115S Main Case
K 5 QYFA0053S
K6 QBP2028
K7 QJB0134
K 8 QJB0109
K9 QJB0147
Screw (Volume Knob M’tg)
Condenser Microphone
Mic Rubber
Screw (P.C.B. M’tg)
Washer (P.C.B M’tg)
Main Name Plate
ACCESSORIES
QFTCO7L003NZ Demonstration Tape
Handstrap Assembly
Instruction Book
PACKINGS
QPNA0198 Inner Carton
P2 XZB16X27A02_ Poly Bag (for Unit)
P3 QPAA0106 Cushion
Main Base Plate
Assemble so that the distance from the main
REMARKS
(1) Playback the test
tape.
3000+90 Hz VR2 (2) Adjust VR2 to obtain
CABINET PARTS LOCATION
REPLACEMENT PARTS LIST
counter readings
within specified
tolerances.
Pushing |
0
M66: Supply
Reel Table=
M68: Back..@
Tension —
Spring-L |
M67: Reel
Table Gear-L ~~
REAR SIDE
Fig. A
Pushing
MECHANICAL
PARTS
LOCATION
(Front View)
M64—7
M24~___ M68
a
SUPPLY REEL TABLE
Approx. 12mm
MAIN BASE PLATE
REEL TABLE GEAR-L
Fig. B
NOTES:
When
changing
mechanism
parts,
apply
the
specified
grease
to
the
area
marked
show
in
the
drawing
‘“‘Mechanism
Parts
Location”
e
“x
x"
mark......
Rocol
paste
(Lubricating
grease)
¢ “OO” mark...... Molylone (Lubricating grease)
e “AA” mark...... Dynamic (Lubricating grease)
e
“
“4”
mark
(Obrique
Lines)......
Aero
(Lubricating
grease)
SPECIFICATIONS
Pressure
of
pressure
roller
240+50g
SSS £2 FFZZZSE FEZZZ
Takeup tension
* Use cassette torque
meter...... QZZRKCT
Wow and flutter: (JIS)
* Use test tape
ee QZZCWAT
Play: 35+ Vg.cm
e FF/REW: 70 + 20g-cm
Less than
0.5% (RMS)
Mechanism Operation: Auto Stop
nee ‘7 anaes
REPLACEMENT PARTS LIST
a One! wD =
> mt
tO —
ab ok kk
NO O1
RQ-342 RQ-342
4
MECHANICAL PARTS
QGO2495H Playback Button
QML4165 Auto-stop Lever
QMR2195 Playback Rod
QXD0163 Takeup Reel Table
Assembly
QXF0248 Flywheel Assembly
QDB0350 Flywheel Belt
QMK2170 Lower Base Plate
QMR2196 Lock Plate
QMR2197 Switch Rod
QBT2063 Lock Plate Spring
QXU0376 Motor Assembly
QXK2976 Flywheel Retainer Plate
Assembly
QMK2173 Head Base Plate
QGG0233 Head Base Pilate Table
QWY0160Y Record/Playback Head
QXL1770 Detection Lever Assembly
QBC1339 Head Adjustment Spring
XSN2D10
XSN249 |
QXB0832
M21 QXB0833 |
QXB0834 |
QML4159
QBT2057 |
QXL1765
QML4167
QBT2060
26 QXL1768
26-1 QBT2059
27 QML4166
8 QDG1369 F
9 XUE25 |
0
1
QBT2061 |
QML4168 |

RQ-342 RQ-342
4
5
6
7
8
1
MECHANICAL
PARTS
LOCATION
(Front View)
; (Rear View)
M45
M18 F109
Sue M15
Re)
REMARKS
back the test
ist VR2 to obtain
iter readings
in specified
ances. |
ne & Description
‘S
ase
d
crew @2.6 x 25
ase M’tg)
e
Lid Assembly
Llid Spring
arminal-A
2rminal-B (+)
srminal-C (—)
nob
lume Knob M’tg)
r Microphone
“16
>.B. M’tg)
-C.B M’tg)
e Plate
, D
ation Tape
» Assembly
1
Book
M65
on
for Unit)
REPLACEMENT PARTS LIST
Pushing
|
NOTES:
Part
Name
&
Description
0
When
changing
mechanism
parts,
apply
the
specified
grease
to
the
area
M66:
Supply
marked
show
in
the
drawing
“Mechanism
Parts
Location”
MECHANICAL
PARTS
XSN2D10
Screw
©2x
10
.
QBN2093
FF
Lever
Spring
M
50
QML4163
Review
Lever
Reel
Table~
glee
peak
Rocol-pasté.
(Lubricating
grease)
Sa
a
ee
ae
(for
Head
Azimuth
Adj.)
M
33
QDG1368
Intermediate
Gear
M
51
QBG1762
Motor
Cushion
Sonat
teats
Dees
ata
99
M
1
QGO2495H
Playback
Button
M
19
XSN2
+9
Screw
@2x9
M
34
QBP2031
Cassette
Retainer
Spring
M
53
QwWY2141
Erase
Head
:
Rese
mark......
Molylone
(Lubricating
grease)
M
2
QML4165
Auto-stop
Lever
(R/P
Head
M’tg)
M
35
QBN2090
Pinch
Roller
Spring
M
54
QBMA0018
‘Speaker
Cushion
M68:
Back
©
“AA”
mark......
Dynamic
(Lubricating
grease)
M3
QMR2195
Playback
Rod
M
20
QXB0832
FF
Button
Assembly
M
36
QBN2092
Head
Base
Plate
Spring
M
55
QXK2980
Record
Rod
Assembly
eZ
=
SUPPLY
REEL
TABLE
e
“4”
mark
(Obrique
Lines)......
Aero
(Lubricating
grease)
M4
QxXD0163
Takeup
Reel
Table
M
37
QBN2094
Stop
Button
Spring
M
56
QXR1045
Pause
Rod
Assembly
Tension
|
De
Ma
arr
tes
Assembly
M
21
QXB0833
REW
Button
Assembly
M
57
QKJ0741
Erase
Prevention
Sheet
Spring-L
M5
QXF0248
Flywheel
Assembly
M
22
QXB0834
Stop
Button
Assembly
M
38
QBN2093
FF/REW
Button
Spring
M
58
QMC0157
Motor
Collar
Main
Base
Plate
Approx.
12mm
M6
QDB0350
Flywheel
Belt
M
22-1
QML4159
Eject
Lever
M
39
QBT2058
Auto
Lever
Spring
SPECIFICATIONS
M
7
QMK2170
Lower
Base
Plate
M
22-2.
QBT2057
Eject
Lever
Spring
M
40
QBC1503
Back
Tension
Spring-R
M
59
XWE19D5
Washer
(Motor
M’tg)
M8
QMR2196
Lock
Plate
M
23
QXL1765
Pinch
Roller
Assembly
M
41
XUC15FT
Stop
Ring
1.5¢
(Pinch
M
60
QBN2091
Erase
Safety
Lever
Spring
Zs
FRONT,
M9
QMR2197
Switch
Rod
M
24
QML4167
Cassette
Up
Lever
Roller
Lever)
M
61
QBN2100
Pause
Lock
Plate
Spring
Sl
SIDE
:
MAIN
BASE
PLATE
Pressure
of
pressure
roller
M
10
QBT2063
Lock
Plate
Spring
M
25
QBT2060
Cassette
Up
Lever
Spring
|
M
42
QBW2030
Poly
Washer
(Takeup
Reel
|
M
62
QBT2056
Record
Rod
Spring
051
if,
REEL
TABLE
GEAR-L
M
26
QXL1768
Takeup
Reel
Lever
Table
M’tg)
M
63
QBT2062
Playback
Rod
Spring
S
Zz
a
Takeup
tension
‘
Play:
35
+10
“cm
M
11
QXU0376
Motor
Assembly
;
Assembly
M
43
QBW2131
Poly
Washer
M
64
XSN2+9
Screw
(Erase
Head)
&
<a
*
Use
cassette
torque
;
_—
89
M
12
QXK2976
Flywheel
Retainer
Plate
M
26-1
QBT2059
Takeup
Lever
Spring
(for
Flywheel)
M
65
QBT2055
Pause
Rod
Spring
&,
Fig.
B
meter
QZZRKCT
e
FF/REW:
70+
20g-cm
Assembly
M
27
QML4166
FF/REW
Lever
M
44
QHQ1358
Screw
(Motor)
M
66
QMG1451
Supply
Reel
Table
M67:
Reel
M
13
QMK2173
Head
Base
Plate
M
45
XTNQ16C4D
Tapping
Screw
@1.6x
4
M
67
QDC1370
Reel
Table
Gear-L
:
Ree
I
W
d
flutter:
(WIS
M
14
QGG0233
Head
Base
Plate
Table
M
28
QDG1369
REW
Gear
M
46
XSN2+6
Screw
(Playback
Button)
Table
Gear-L
OW
an
utter:
(
)
Less
than
M
15
QWY0160Y
Record/Playback
Head
M
29
XUE25
Stop
Ring
2.5¢
M
47
QGO2494
Record
Button
M
68
QBC1510
Back
Tension
Spring-L
4)
*
Use
test
tape
0.5% (RMS
M
16
QXL1770
Detection
Lever
Assembly
|
M
30
QBT2061
FF/REW
Lever
Spring
M
48
QML4158
Erase
Safety
Lever
REAR
SIDE
Pushing
QZZCWAT
9%
(
)
M
17
QBC1339
Head
Adjustment
Spring
M
31
QML4168
FF
Lever
M
49
QML3950
Pause
Lock
Plate
Fig. A
Mechanism
Operation:
Auto
Stop
ASA
cet
—
8
—
r
M
X§
LS
Printed
in
Japan

ORDER NO. GAD8610456S0
Al
Service
Manual
Mini Cassette
RQ-342
Please use this manual along with the original service manuals
for the below models.
This is the Service
Manual for the all areas.
GAD84065432C1
IZ |E |GAD84065431A2
GAD84055421C3
PARTS COMPARISON TABLE:
| Please revise the original parts list in the Service Manual to conform to the changes shown herein.
If new part numbers are shown, be sure to use them when ordering parts.
(Original) (Supplement)
RQ-342 RQ-342
poms | Record/Playback Head QWY0160Y RJHOCO8WZ
CIRCUIT
BOARD
AND
WIRING
CONNECTION
DIAGRAM
Ref. No. Description Remarks
RECORD/ RECORD/
PLAYBACK
PLAYBACK
HEAD HEAD
MICROPHONE ! WHT
\
‘
ELECTRET ELECTRET ~v
= CONDENSER = CONDENSER ~~ "4
oh MICROPHONE a
~ an
Matsushita Service Company
, = i 50 Meadowland Parkway,
National / Panasonic ace aa
Panasonic Sales Company,
Division of Matsushita Electric
of Puerto Rico, Inc.
Ave, 65 De Infanteria, KM 9.7
Victoria Industrial Park
Carolina, Puerto Rico 00630
Panasonic Hawaii Inc.
91-238 Kauhi St. Ewa Beach
P.O. Box 774
Honolulu, Hawaii 96808-0774
Matsushita Electric
of Canada Limited
5770 Ambler Drive, Mississauga,
Ontario. L4W 2T3
Matsushita Electric. Trading Co., Ltd.
P.O. Box 288, Centra! Osaka Japan
Y.Y Printed in Japan (N)

ORDER NO.GAD8§)7191P2
Parts Change Notice
This is the Service Manual for the following areas.
[Z]... For all Euaropean areas except United Kingdom.
[E}... For United Kingdom.
Model No. RQ@-342
Please revise the original parts list in the Service Manual to conform to the change(s) shown (ORDER NO. GAD 8 4 0 6 9 4 3 l A 2 )
herein. If new part numbers are shown, be sure to use then ordering parts.
Reason for Change *The circled item indicates the reason. If no marking, see the Notes in the bottom column.
. Improve performance
8. Other
In rerchangeatiy Code **The circled item Indicates the interchangeability. If no marking, see the Notes in the bottom column.
Original or new parts may be used in early or late production set.
Use original parts until exhausted, then stock new parts.
Original parts may be used in early production sets only. New parts may be used in early or late
production sets. Use original parts where possible, then stock new parts.
Original New parts only may be used in early or late production sets.
C
New : Stock new parts.
D a ——~ _ Early : Original parts may be used in early production sets only. New parts may be used in late
Late production sets only. Stock both original and new parts.
Part Number
Model! No. Original Part No. | ss New PartNo. —_—‘| Notes. Part Name & Description
| Ref. No. |
mt QG02495H QGO2495K q Playback Button |
File this Parts Change Notice with your copy of the Service Manual.
ies . ‘ i ‘
Pan asonic Matsushita Electric Trading Co., Ltd.
P.O. Box 288, Central Osaka Japan
Printed in Japan ©)
Sten a aoe

ORDER NO. GAD8610456S0
Al
ervice
Manual
Mini Cassette
RQ-342
Please use this manual along with the original service manuals
for the below models.
This is the Service
Manual for the all areas.
Model No. Order No.
RQ-342 IM|C| GAD84065432C1
RQ-342 Z|E |GAD84065431A2
RQ-342 GAD84055421C3
PARTS COMPARISON TABLE:
Please revise the original parts list in the Service Manual to conform to the changes shown herein.
If new part numbers are shown, be sure to use them when ordering parts.
Ref. No. Description
(Original) (Supplement)
poms | Record/Playback Head QWY0160Y RJHOCO8WZ
RQ-342 RQ-342
CIRCUIT
BOARD
AND
WIRING
CONNECTION
DIAGRAM
RECORD/
Remarks
RECORD/
ELECTRET PLAYBACK ELECTRET Sf (6 PLAYBACK
CONDENSER
HEAD
CONDENSER)
ow
HEAD
a) MICROPHONE ae MICROPHONE
BLK oe BLK
National Panasonic
Matsushita Service Company
50 Meadowland Parkway,
Secaucus, New Jersey 07094
Panasonic Sales Company,
Division of Matsushita Electric
of Puerto Rico, Inc.
Ave, 65 De Infanteria, KM 9.7
Victoria Industrial Park
Carolina, Puerto Rico 00630
Panasonic Hawaii Inc.
91-238 Kauhi St. Ewa Beach
P.O. Box 774
Honolulu, Hawaii 96808-0774
Matsushita Electric
of Canada Limited
5770 Ambler Drive, Mississauga,
Ontario. L4W 2T3
Matsushita Electric. Trading Co., Ltd.
P.O. Box 288, Central Osaka Japan
Y.Y Printed in Japan (N)

ORDER NO. GAD85035511S8
ervice Manual
Mini Cassette
RQ-342
AC/Battery Mini Cassette Recorder
with Auto-Stop Mechanism
This is the Service Manual
for the following areas.
---For all European
areas except United
Kingdom.
Please use this manual along with the original service
manuals for the below models.
Model No. Order No.
RQ-342 [Z] [E] GAD84065431A2
RQ-342 [x] GAD84065430A3/GAD84065421S3 (Supplement-1)
m@ PARTS COMPARISON TABLE:
Please revise the original parts list in the Service Manual to conform to the changes shown
herein.
--For United Kingdom.
---For Asia, Latin
America, Middle
East and Africa
areas.
---For Australia.
If new part numbers are shown, be sure to use them when ordering parts.
Part Numbers
Description RQ-342 RQ-342 Remarks
| (Original) (Supplement)
M21 (Brown Type) | REW Button Assembly QXB0836 RFY540Z a
MECHANISM PARTS LOCATIONS
Q? a
|
7
oN
Sad <
|
=
=
i
ic
Tradi
Co.,
Ltd.
National/Panasonic
M2
stitz
Electric
Trading
Co.,
Lta.
ASA
.
H.S
Printed
in
Japan
aO