Panasonic RQ-345 User manual

ORDER NO. GAD8607592A2
Service Manual
Mini Cassette
RQ-345
(Silver)
Mini Cassette Recorder
This is the Service Manual
for the following areas.
---For all European
areas except United
Kingdom.
¢ Please use this manual together with the service manual for model No. RQ-345
order No. GAD8604548C1.
e This service manual indicates the main differences between; Original RQ-345
(for M) mark areas.) and RQ-345 for [2] mark areas.
CHANGE
@ SPECIFICATIONS
Power Requirement: AC; 120V, 60Hz (with optional Power Requirement: AC; 220V, 50Hz with optional AC
Panasonic AC Adaptor RP-63) adaptor RD-9496S
Battery; 6V (four ‘‘AA” size dry > Battery; 6V (four UM-3, “AA” size
batteries) batteries)
Car battery; with optional Panasonic RQ-345 (Z]
car adaptor RP-698
RQ-345 [mM] (Original)
@ PARTS COMPARISON TABLE:
Description
RQ-345 [M]
(Original) RQ-345 (2)
pat Operating Instructions RQXK4041Z RQXK4052ZA as
——-
i
Panasonic
Matsushita
Electric
Trading
Co.,
Ltd.
P.O. Box 288, Central Osaka Japan
mid
Printed in Japan
HM ma

ervice Ma
Mini Cassette Recorder
@ SPECIFICATIONS
Power requirement:
Motor:
Power output:
Tape speed:
Frequency response:
Track system:
Jacks:
Speaker:
Dimensions:
Weight:
ORDER NO. GAD8604548C1
A1
n
ual
Mini Cassette
Q-345
(Silver)
This is the Service Manual
for the following areas.
[M]... For U.S.A.
[C]... For Canada.
AC; 120V, 60Hz (with optional Panasonic AC Adaptor RP-63)
Battery; 6V (four “AA” size batteries)
Car battery; (with optional Panasonic Car Adaptor RP-698)
Mechanism governor motor
700 mW
17/3 ips (4.8cm/s)
300~4,000 Hz
2-track monaural recording and playback
DC in; 6V (Standard Type)
Monitor; 8Q 03.5
15/,” (4.5cm) PM dynamic speaker (6Q)
371g”(W) X 61/3”(H) X 11/2”(D)
(99 x 155.5 x 39mm)
13.7 oz (390g), without batteries
Weights and dimensions shown are approximate.
(Les poids et dimensions mentionnes sont approximatifs.)
Design and specifications are subject to change without notice.
Panasonic.
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 Engineering and
Service Company
50 Meadowland Parkway,
Secaucus. New Jersey 07094
Matsushita Electric
of Canada Limited
5770 Ambler Drive, Mississauga,
Ontario, L4W 2T3

LOCATION OF CONTROLS AND COMPONENTS
Built-in Microphone Monitor Jack [MONITOR (80)]j 93.5
(MIC)
| Volume Control
Stop Button (VOLUME)
(@ STOP)
Record Button
([REC))
Rewind/Review
Button (4 REV)
DC Input Jack
(DC IN6 VO-®-8)
(Standard Type)
Fast Forward/ Speaker
Cue Button
(¥ CUE)
Battery
;
(ae
8
Compartment
BATTERY SERVICE LIFE
Eject/Pause
memes
ree
paeeh
ae
Secs
(EIAJ)
Button
Compartment
Approx.
4
hours
of
playback
(EIAs)
with
volume
set
at
center
position
(MEJECT/N
IPAUSE)
The
above
battery
service
life
is
measured
according
to
the
conditions
set forth by ElAJ (Electronic Industries Association of Japan). As the
battery service life varies with the method of operation and
environmental conditions, use these values as reference.
ee
a
Tap
Circuit Board
m@ HOW TO REMOVE THE MOTOR
Remove two screws (2.6 x 7.5)mm (C).
@ HOW TO REMOVE THE FLYWHEEL ASSEMBLY
1. Remove two screws (2.6 x 8) mm (D).
2. Pull out the flywheel assembly.

RQ-345 RQ-345
SCHEMATIC DIAGRAM MODEL RQ-345 CIRCUIT BOARD AND WIRING
a 3 : 2 : f 8 CONNECTION DIAGRAM a
VOLUME
PM DYNAMIC
SPEAKER
hn (4.5cm)6Q
1 C1 5
: Q2
MONITOR J1
C4 C7 l ve
C3m
i
A
MONITOR
C10
IC1
(BA526)
Q1,2
(2SC1740SLNS)
A|
ELECTRET
PRE
AMP,
AGC
|
PRE/POWER
AMP
CONDENSER
MICROPHONE §f
ry
RECORD/ J
PLAYBACK os om BLK
HEAD 150P 3) BATTERY. &V
aw,
—N,
DC
IN
J2
(UM-
3x4)
S. =o. 6V)
=P UT ee ee ee
&@ C8 0.0047
D1 D2
D) ecrase HEAD (20A90) (RVDSM1A02) >—(M) ae
A.G.C PROTECTOR MOTOR Hs ls tH
><
a
Ec]
O
cea
BATTERY
avi
IC{
QI
DC
IN
6V
SC
pote
.
2
e
MSA)
4
(45¢m)
6.2
ELECTRICAL PARTS LIST Notes: Notes: (for Circuit Board and Wiring Connection Diagram) NOTES:
1. $1-1~S1-4: Record/playback switch in “PLAYBACK” position. ¢ The circuit shown in | on the conductor indicates printed circuit on BLK ; Bick
Numbering
System
of
Resistor
Numbering
System
of
Capacitor
(R...Record,
P...PLAYBACK)
the
back
side
of
the
printed
circuit
board.
BLU
........Blue
Example | : on Em re = : E 2. S2: Motor ON/OFF switch. ° The circuit board diagram may be modified at any time ese
pos essen eee) fe ee ee, es, eS ee, BR Volume control VR. . . with the development of new technology. GRN .......Green
Type Wattage Shape Tolerance Value Type Voltage Value Tolerance Peculiarity 4. DC voltage measurements are taken with electronics voltmeter L. BLU....Light Blue
(1000) (1000 pF) from negative terminal of battery. NIL......... No Color Mark
sae
rae
ee
ae
saa
ae
sare
oe
see
epee,
gee
No
mark...Playback
ORG
.......
Orange
Type Wattage Shape Tolerance Value Type Voltage Peculiarity Value 5. Battery Current: NO SiQmal ............csccccssccsssessteessseesseeeeseeeesaeees 177mMA ao pea
(2.20)
OR)
Maximum
output
(playback)
«0.0...
850mA
SLD.......Shield
Wire
Maximum output (TeCOrd) ..sscssessccssneeeesee 820mA VUT Violet
+ This schematic diagram may be modified at any time with the vee ase ie
ERD: Carbon > YW: +5%
ERG: Metal Film
ERX: Metal Film
ERQ: Fuse Type Metal
RRD: Carbon
(Chip Type)
Capacitor Type Tolerance
i ee development of new technology.
ec Semmes [ASSIA Se Zaee MEASUREMENTS AND ADJUSTMENTS
ECKD: Ceramic : PE oy 0%
ECQM:
Polyester
:
|
ta
same
©
RECORD
m@
ALIGNMENT
INSTRUCTION
ECQP: Polypropylene : +100%, > - PLAYBACK
ECET:
Electrolytic
:
me
===>
-
RECORD/PLAYBACK
READ
CAREFULLY
BEFORE
ATTEMPTING
ALIGNMENT
ECEADOON:
Non
Polar
‘
:
Electrolytic
suapees
©
+B
LINE
QCU 2: Ceramic (Chip Type)
ECUX: Ceramic (Chip Type)
1. Make sure heads are clean. 4. Set volume control to maximum.
2. Make sure capstan and pressure roller are clean. 5. Set power source voltage to 6V DC.
3. Judgeable room temperature: 20+5°C (68-9 °F)
CAPACITORS RESISTORS
RCBS1C562NX ERD16TJ332
RCBS1C103NY ERD16TJ223
ECEA0JK331 ERD16TJ101
ECEA1HK2R2 ERD25TJ273
RCBS1C152NX ERD16TJ155
ECFT1E104MX ERD16TJ822
RCBS1H271KB ERD16TJ102
RCBS1C472NX ERD16TJ820
RCBS1H471KB ERD16TJ821
ECEA1EK3R3 ERD25TJ123
—_
Le)
INTEGRATED CIRCUIT VARIABLE RESISTOR = ADJUSTMENT
MEASUREMENT ADJUSTMENT
ITEM POINT SPECIFICATION POINT REMARKS
BA526 IC, PRE/POWER AMP VR 1 EVJ56AT12A14 Volume Control VR.
TRANSISTORS SWITCHES
~ =—-ON OOF WD — — ©
—
>
. QZZCFM Monitor jack Maximum Head adjustment
Head azimuth (8kHz, —20dB) (8Q) output screw (Fig. 1)
2SC1740SLNS_ Transistor, PRE AMP, A.G.C. RSH2D17Z Slide Switch,
Record/Playback
DIODES & RECTIFIERS QSB0294 Leaf Switch, Power ON/OFF
ECEA0JK221 ERD16TJ682
ECEA1EK4R7 ERD16TJ121
ECEA0JK470 ERD25FJ3R9
ECEA0JK101 ERD25FJ331
ECFT1E333MX
ECEA1AU331
RCBS1H681KB
RCBS1H151KB
Playback mode
20A90 Diode, A.G.C. JACKS
RVDSM1A02 Diode, Regulator
RJJD3M6Z Jack, Monitor 6]
Cc
Cc
Cc
Cc
Cc
Cc
Cc
C
Cc
Cc
Cc
Cc
C
Cc
Cc
Cc
C
C RJJ97Y Jack, DC IN
POM a= wo ew oe “OAD OND UW
Head Azimuth Screw
a me Fig. 1

RQ-345 RQ-345
MECHANISM
PARTS
LOCATION
F
1
2
3
4
5
6
7
8
9g
10
11
ie
‘
(FRONT VIEW) a
M77
(REAR VIEW)
OO RE 5
A
|
B
i
)
Ggee.
oe
Sk
D
=
{ @
E| Specifications M46
Playback
torque
471194
“cm
Pressure
of
pressure
360+60gcm
|
—10
roller
|
Fast
Forward
torque
|
65+20g
-
cm
Wow
and
flutter
0.4%
(WRMS)
Rewind
torque
65+20g
-
cm
14
NOTES:
When
changing
mechanism
parts,
apply
the
specified
grease
to
the
area
marked
show
in
the
drawing
‘“‘Mechanism
Parts
Location”
e
“xx”
mark......
Rocol
paste
(Lubricating
grease)
(RZZOL06)
¢ “OO” mark...... Molytone (Lubricating grease) (RZZOLO7)
e “AA” mark...... Dynamic (Lubricating grease) (RZZOLO5)
°¢ “71” mark (Obrique Lines)...... Aero (Lubricating grease) (RZZOL04)
3
2
1
17
17
8
18
17
10
919
11
16-14
205
1713
1615
6
12
7
|
Im2i—aola7
23
21
22 24
26
26
25
|
39
36.35
38
37343332
32
28
30
56
49
60
57
48 50
51
55
5253
46
47
54
59
6563
58
41
45
44
43
42
76
70
81
82 69
84
77
61
79
61
85
62
66
83
78
7174
72
67
7168
64
75
68
717473
68 68
|Ref.No.|
Part
No.
|
Part
Name
&
Description
Part
Name
&
Description
Part
Name
&
Description
Part
Name
&
Description
Screw Dimensions Quick Reference
M5
3NRAK345Z
FF
Button
Ass’y
QBC1298
Spring,
Head
Azimuth
adj.
M
49
QBN1844
Spring,
Idler
XSN2
+10
Screw,
Playback
Button
M’tg
¢
Dimensions
M
6
4NRAK345Z
REW
Button
Ass’y
M
25
QJT0039
Lug
Terminal
M
50
QML3847
Lever,
Erase
Safety
.
: :
;
M7
5NRAK345Z
Stop
Button
Ass’y
M
26
XS$B2D105
Screw,
Record/Playback
M
51
QBN1839
Spring,
Erase
Safety
Lever
M
70
XTN26+8BFZ
Screw,
Head
Base
Plate
G
XSN
3
+
10=Pan
head
machine
screw,
3mm
in
diameter,
10mm
long.
M8
QXD0131
Take
Up
Reel
Table
Ass’y
Head
Azimuth
adj.
M
52
QML3853
Lever,
Cassette
Up
Pressure
M’tg
M9
QXi0119
Idler
Ass’y
M
27
QBN1842
Spring,
Pinch
Roller
M
53
QBC1396
Spring,
Cassette
Up
Lever
M
71
XWG26
Washer,
Frame
Holding
M
10
QML3849
Lever,
Idler
M
28
QMF2217
Plate,
Rod
Holding
M
54
QDG1252
Gear,
FF
Plate,
Battery
String
etc.
;
M
29
QBT1914
Spring,
Playback
Rod
M
55
QDR1157
Supply
Reel
Table
M’tg
Type/Diameter/Length
M11
QBwW2046
Washer,
Idler
Ass’y
M’tg
M
30
QBT1942
Spring,
FF
Button
Ass’y
M
56
RBCK83Z
Button,
Playback
M
72
XWA26B
Washer,
Motor
M'tg
e
Types
M
12
QMR1978
Rod,
Auto
Stop
Driving
M
32
QBG1420
Cushion,
Motor
M
57
QML3848
Lever,
Review
M
73
QMF2231
Plate,
Frame
Holding
M
13
QBT1940
Spring,
Auto
Stop
Driving
M
33
QMC0079
Collar,
Motor
M
58
QDB0309
Belt,
Fast
Wind
M
74
XTN26
+
6B
Screw,
Frame
Holding
Plate,
Rod
M
34
QJB0166
Battery
Terminal,
+/—
M
59
QDB0308
Belt,
Flywheel
Battery
String
M’tg
M
14
QXL1502
Pinch
Roller
Ass’y
M
35
QJB0158
Battery
Terminal,
—
M
75
QBT1902
Spring,
Earth
XQC_
Flat
head
XSB_
Binding
head
XTB_
Binding
head
M
15
QXG1061
Fast
Wind
Pulley
Ass’y
M
36
QJB0168
Battery
Terminal,
+/—
QBP1940
Spring,
Head
Base
Plate
M
76
QWY0155Y
Head,
Record/Playback
XQG_
Oval
fillister
head
XSC_
Oval
countersunk
head
XTC
Oval
countersunk
head
M
16
QXL1503
Fast
Wind
Frame
Ass’y
M
37
QJB0159
Battery
Terminal,
+/-—
Pressure
M
77
QWY2169
Head,
Erase
H
XQH
Flat
fillister
head
XSH_
Flat
fillister
head
XTN_
Pan
head
M
16-1
QBN1837
Spring,
Fast
Wind
Frame
M
38
QJB0167
Battery
Terminal,
+
M
61
QDK1012
Steel
Ball
2.5
M
78
QBJK0062
Battery
oe
Ass’y
M
39
QBN1843
Spring,
Cassette
Retainer
M
62
QBC1272K
Spring,
Back
Tension
M
79
S3UAAK345Z
Chassis
Ass’y
XQS_
Flat
head
oN
uh
la
Ie:
‘Flathead
M
17
QBW2008
Washer,
Review
Lever,
Take
M
40
QMR2221
Rod,
Switch
M
63
QBC1359
Spring,
Flywheel
M
81
XWG26FZ
Washer,
Head
Base
Plate
Up
Reel
Table
etc.
M’tg
M
41
QMR1979
Rod,
Lock
M
64
XUBQ4F
C
Ring,
Fast
Wind
Frame
Pressure
M’tg
M
18
QXU0384
Motor
Ass’y
M
42
QMR1972
Rod,
Playback
Ass’y
M’tg
REPLACEMENT
PARTS
LIST
M19
QXH0379
Flywheel
Holding
Plate
Ass'y
|
M43
QBN1838
Spring,
Playback
Rod
M65
QBW0043
Washer,
Flywheel
M82
XWG2
Washer,
Playback
Button
mae acy
,
M
44
QBN1840
Spring,
Lock
Rod
M
66
QBW0042
Washer,
Take
Up
Reel
Table
M’tg
M
20
QXF0184
Flywheel
Ass’y
M
45
QBN1836
Spring,
Stop
Rod
M
67
XYN26+B75
Screw,
Motor
M’tg
M
83
RUQK22Z
Spring,
Back
Tension
MECHANICAL
PARTS
M2
RBCK88z
Button,
Record
M
21
QMK1944
Plate,
Head
Base
M
46
QML3854
Lever,
Pause
Lock
M
68
XTN26
+8
Screw,
Flywheel
Holding
M
84
XTN26
+
5B
Screw,
Erase
Head
M’tg
a
a
M3
XYC26+CF6
Screw,
Record
Button
M'tg
M
22
QML3852
Lever,
Auto
Stop
Detection
M
47
QBN1835
Spring
Pause
Lock
Lever
Plate,
Rod
Holding
Plate
M
85
RNWK2082
Washer,
Supply
Reel
Table
M
1
6NRAK345Z
Record
Rod
Ass’y
M
4
2NRAK345Z
Eject/Pause
Button
Ass’y
M
23
QMZ1282
Spacer,
Head
M
48
QBN1841
Spring,
Record
Rod
M’tg
ae
Se
—6§—
Vv
Be
sure
to
fold
at
the
(W)
mark
so
that
mark
is
on
the
outside.

¢ SPRING LOCATION
ee re ee ee ee ee ee ee ee es oe ee
ee ee ee ee es ee ee ee ee ee %
ee ee ee ee ee om oe
10 4
ee ce ee ee ee ee ee ee ee ee
oe re ee oe oe ee ee,
- ce ee ee a a ae oe,
me ee em ee te tees ee ee ee
a eee ee ee ee ee ee ee ee ee ee ee ee ee ee a
REPLACIMENT PARTS LIST
Notes:
1.
The letter in round brackets in the Ref. No. column indicates
the shipping destination.
(M)...For U.S.A. (C)...Canada.
The letter in the circle after the part name indicates the
color of the part.
(H)...Gray, ®...Black, ©...Silver
Part Name & Description
CABINET PARTS
RYMQ345M8 _ Front Cabinet Ass’y ©
RYQQ345M Cassette Compartment Ass’y
RUS629Z Spring, Cassette
Compartment
RKFK162Z7 Rear Cabinet
RAS45P05Z Speaker
XTN26 + 6G Screw, Speaker M’tg
QMA3903 Holder, Speaker M’tg
RYNQ345M7_ _—s— Battery Compartment
Ass’y ©
RUCK2Z Holder, Jack
XTN26+30GFY Screw, Front Cabinet
Ass’y M’tg
QGT1560K Knob, Volume
XTN26 + 8B Screw, Circuit Board M’tg
XWG26 Washer, Circuit Board M’tg
WM034CZ102 Microphone
QBG1616 Microphone Rubber
ACCESSORIES
A1(M) RQXK4041Z Operating Instructions
(For U.S.A.)
A1(C) RQXK4046Z Operating Instructions
(For Canada.)
PACKINGS
P1(M) RPKK1040Z Gift Box
(For U.S.A.)
P1(C) RPKK1046Z Gift Box
(For Canada.)
P22 RPNK3017Z Cushion
P3 RPEK115Z Pad
P4 XZB21X20A01 Poly Sheet
KTB
4S MC | Printed in Japan CG) :