Panasonic RQ-SX79GK / RQ-SX79GD Service Manual ▷ View online
nGeneral
Power Requirement:
Battery;
DC 1.5V (one R6/LR6,”AA”
battery)
Rechargeable Battery;
DC 1.2V with an included
Panasonic Rechareable Battery
(RFKFHFAZ01EM) x 1
Power output:
6.5mW+6.5mW (RMS...max)
Output jack:
Headphone;16
Ω,M3 jack
Dimensions(WxHxD):
75.0 x 108.8 x 19.0mm
Weight:
157g (With rechargeable battery)
nCharger
Input;
For (GK) area;
AC 220V,50Hz,4 W
For (GD) area;
AC 220V,60Hz,4 VA
Output;
DC 1.2V,350mA
Wow & Flutter;
WRMS 0.28%
nCassette Player
1 Accessories
2
2005 TAIWAN
. and
is a of .
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is a of .
RQ-SX79GK
RQ-SX79GD
RQ-SX79GD
Stereo Cassette Player
Colour
(S)............Silver Type
(A)............Blue Type
(S)............Silver Type
(A)............Blue Type
AR10 Mechanism Series
Track system:
4 track, 2 channel,stereo
Frequency Range (Normal)
40~18,000Hz (-6 dB)
Recharging time:
About 5 hours
Motor:
Tape Speed:
4.8 cm/s
Playing time:
(When used in hold mode, at 25°C and on flat stable surface)
Battery (-ies)
Tape playback
Rechargeable battery *1
About 31.5 hours
Alkaline battery
About 52 hours
Rechargeable
battery
*1
Alkaline battery
About 84 hours
*1 When the included rechargeable battery is fully recharged (5 hours
required)
required)
Note:
Specifications are subject to change without notice.
Mass and dimensions are approximate.
The play time may be less depending on the operating conditions.
Specifications are subject to change without notice.
Mass and dimensions are approximate.
The play time may be less depending on the operating conditions.
2 Location of Controls
3
Mini Cassette
Specification
CONTENTS
Page
Page
TD0502007C3
3 Service Mode
4
3.1.
Unit and Stereo Earphones Test
4
3.2.
Remote Controller Test
4
4 Mechanism Block Replacement Procedure
5
4.1.
Replacing the tape transport assembly
5
4.2.
Replacing the head block assembly
5
5 Operation Checks and Component Replacement Procedures
6
5.1.
Checking for the main P.C.B.
6
5.2.
Replacement for the motor and capstan belt
7
5.3.
Replacement for the intermediate ornament (A),
intermediate ornament (B), intermediate ornament (C) and
open knob ass 馳
8
5.4.
Replacement for the head block ass 馳
9
6 Notice for assembling the rear cabinet ass 馳
10
7 Block Diagram
11
· Stereo earphones
(L0BAB0000181) ............................................................. 1pc.
(L0BAB0000181) ............................................................. 1pc.
· Remote Control
(RFEV033P-SS)............. ................................................ 1pc.
(RFEV033P-SS)............. ................................................ 1pc.
· Battery Charger Stand
(RFEB118T-2U) ..............................................................1pc.
(RFEB118T-2U) ..............................................................1pc.
· Battery Charger Stand
(RFEB121Q-S) ...............................................................1pc.
(RFEB121Q-S) ...............................................................1pc.
8 Check Point of Signal
11
9 Schematic Diagram Notes
11
10 Schematic Diagram
12
11 Printed Circuit Board Diagram
16
12 Type Illustration of ICs, Transistors and Diodes
18
13 Measurements and Adjustments
18
13.1. Adjustment Instructions
18
13.2. Adjustment Points
18
14 Terminal Function Of IC 痴
19
15 Supply of Rechargeable Battery as Replacement Parts
19
16 Caution in Use of Rechargeable Battery
19
17 Mechanism Parts Location
20
18 Cabinet Parts Location
21
19 Packaging
22
20 Replacement Parts List
22
· Stand Charger Holder
(RKQT0022-A) ................................................................1pc.
(RKQT0022-A) ................................................................1pc.
· Battery Ass’y
(RFKFHFAZ01EM)............................................................1pc.
(RFKFHFAZ01EM)............................................................1pc.
· Battery Case
(RFCT0005-H) ............................................................... 1pc.
(RFCT0005-H) ............................................................... 1pc.
· Battery Case
(RFAT0002-H) ................................................................ 1pc.
(RFAT0002-H) ................................................................ 1pc.
1 Accessories
2
RQ-SX79GK / RQ-SX79GD
2 Location of Controls
OPEN
Main Unit
Open knob
Volume control
Tape OFF/PLAY
Remote Control
Stereo earphones
Battery lid
(Battery life) position
E
F BATT CHK
Volume control
Hold switch
Earphone jack
Main button
Plug
Plug
+,- Control
Battery terminal
A-B REPEAT/ S-XBS button
REW/REV
FF/CUE
(16 )Headphone/Remote
Hold)
BATT CHK / HOLD
(
3
RQ-SX79GK / RQ-SX79GD
3.1. Unit and Stereo Earphones
Test
· Service Mode
The RQ-SX79 has a Service Mode designed to help identify
Faulty parts in the event of an error.
This mode is especially useful when servicing carried out.
Faulty parts in the event of an error.
This mode is especially useful when servicing carried out.
· Items Required
1.Stereo earphones.
2.Remote controller.
3.Rechargeable battery or dry cell (R6/LR6,AA,UM-3)
housed in case.
2.Remote controller.
3.Rechargeable battery or dry cell (R6/LR6,AA,UM-3)
housed in case.
· Service Mode Functions
1.Amplifier test
−
−
−
−
− This test should be run if an amplifier failure occurred
during test 1.above.
· UNit and Stereo Earphones Test Preparations
1.Plug the stereo earphones into headphone jack.
2.Insert a fully-charged rechargeable battery or dry cell
(R6/LR6,AA,UM-3) (housed in battery case).
3.Insert a cassette tape.
4.Release the hold mode.
2.Insert a fully-charged rechargeable battery or dry cell
(R6/LR6,AA,UM-3) (housed in battery case).
3.Insert a cassette tape.
4.Release the hold mode.
· Main unit operation switchs location
· Remote controller operation switchs location
3.2. Remote Controller Test
3 Service Mode
4
RQ-SX79GK / RQ-SX79GD