Panasonic rx es 23 service manual

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Order No. MD050201SC3

Service Manual

COMPACT

DIGITAL AUDIO

Specification
n RADIO

Frequency range

FM

AM

n CD PLAYER
Sampling frequency
Decoding

Beam source

No. of channels
Wow and flutter
D/A converter

n TAPE RECORDER
Track system

Monitor system
Recording system
Erasing system
Frequency range
Normal position

n GENERAL
Speakers
Jacks

8750-10800 MHZ (50 kHz steps)
522-1629 kHz (9 kHz steps)
520-1630 kHz (10 kHz steps)

44.1 kHz
16 bit linear

Semiconductor laser (wavelength
780 rim)

2 channel, stereo
Below measurable limit
MASH (1 bit DAC)

Stereo
Variable sound monitor
AC bias

Multi Pole magnet

50-14000 Hz

8 cm 2.7flx 2

Panasonic

Portable Stereo CD System

RX-ESZ3GC
RX-ESZ3GS
RX-ESZ3GN
RX-ESZ3GT

Colour

(S) .......... Silver Type

Output Phones: 3.5 mm stereo (16-329)
Power requirement (For GC / GS)

AC 110-127 V / 220-240 V, 50 / 60 Hz
Power consumption 20 W

Power requirement (For GN)
AC 230-240 V, 50 Hz
Power consumption 23 W
Power requirement (For GT)

AC 110 V, 60 Hz
Power consumption 26 W
Battery 12 v [Eight R20/LR20 (D, UM-i)

batteries]

1 Do not use rechargeable type batteries

Memory backup for
computer/clock

6 V [Four R6/LR6 (AA, UM-3)
batteries]

1 Do not use rechargeable type batteries

Dimensions

Mass (For GC / GS / GN)
Mass (For GT)

Power consumption in standby
mode (For GC / GS)

Power consumption in standby
mode (For GN / GT)

529 mm (W) x 144 mm (H) x 276
mm (D)

3.9 kg without batteries
3.6 kg without batteries

3.0 w (117 V)
3.5 w (240 V)

2.3 W

© 2005 Matsushita Electric Industrial Co. Ltd.. All
rights reserved. Unauthorized copying and
distribution is a violation of law.

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RX-ESZGGC [RX-E32365 I RX-ESZSGN I RX-ESZSGT

Notes:
1. Specifications are subject to change without notice.
2. Mass and dimensions are approximate

A WARNING

This service information is designed for experienced repair technicians only and is not designed for use by the general public.

It does not contain warnings or cautions to advise non-technical individuals of potential dangers in attempting to service a product.
Products powered by electricity should be serviced or repaired only by experienced professional technicians. Any attempt to service
or repair the product or products dealt with in this service information by anyone else could result in serious injury or death.

CONTENTS

1 Safety Precautions --
1.1. GENERAL GUIDELINES

2 Caution for AC Mains Lead ............................................ 4
3 Before Use ----------------------------------------------------------------- 5
4 Before Repair and Adjustment ........................................ 5
5 Protection Circuitry ...................................................... 5
6 Handling the Lead Solder .............................................. 5

6.1. About lead free solder (PbF) ................................... 5
7 Precaution of Laser Diode ............................................. 5

8 Handling Precautions For Traverse Deck-

9 Accessories -

10 Operation Procedures - ---9
10.1. Main unit ----------------------------------------------------------- 9
10.2. Remote control -------------------------------------------------- 10

11 Information on MP3 ---------------------------------------------------- 11

12 Disassembly and Main Component Replacement Procedures

and Operational Check ------------------------------------------------ 12
12.1. Disassembly flow chart ----------------------------------------- 12
12.2. Checking Procedure for each major P.C.B. ---------------- 13
12.3. Procedures for Replacing Pinch Roller and Head Block

(Deck Mechanism Unit) ---------------------------------------- 21
12.4. Procedures for Replacing Motor, Capstan Belt A, Capstan
Belt B, and Winding Belt (Deck Mechanism Unit) --------- 21
12.5. Procedures for Replacing Parts on Deck Mechanism PCB
..................................................................... 23
12.6. Procedures of Replacing Traverse Base (Unit), Driving
Gear, and Cam Gear (CD Mechanism Unit) --------------- 23
12.7. Procedures for Replacing Optical Pickup (CD Mechanism
Unit) ---------------------------------------------------------------- 25
12.8. Procedures for Replacement Traverse Gear A and
Traverse Gear B (CD Mechanism Unit) --------------------- 27
13 Procedure for checking of the major P.C.B. --------------------- 29

13.1. Checking the Main P.C.B., Panel P.C.B., Deck Mechanism
P.C.B., CD Servo P.C.B., Battery P.C.B., Sensor P.C.B.,

Power and Standby LED P.C.B. ------------------------------ 29

14 Self Diagnostic Function --------------------------------------------- 30

14.1. Self-Diagnosis Function ---------------------------------------- 30

14.2. Setting of doctor mode --

15 Measurements and Adjustments

15.1. Tuner Section --------------------------------------- 38
15.2. Deck Section ------------------------------------------- 39
16 Voltage Measurement ------------------------------------- 41
16.1. Main P.C.B. ------------------------------------------------------ 41
16.2. CD Sen/o P.C.B. ------------------------------------------------ 42
17 Waveform Chart ----------------------------------------------------- 43
18 Notes of Schematic Diagram ---------------------------------------- 44

19 Schematic Diagram --------
19.1. CD SERVO CIRCUI
19.2. MAIN CIRCUIT ------

19.3. MAIN (TUNER) CIRCUIT ...................................... 54
19.4. MAIN (DECK) CIRCUIT and DECK MECHANISM
CIRCUIT .......................................................... 56

19.5. PANEL CIRCUIT, STANDBY LED CIRCUIT, BATTERY
CIRCUIT, SENSOR CIRCUIT and POWER CIRCUIT---58
20 Printed Circuit Board -------------------------------------------------- 59
20.1. CD SERVO P.C.B.
20.2. MAIN P.C.B. --
20.3. PANEL P.C.B. and DECK MECHANISM P.C.B.
20.4. STANDBY LED P.C.B., BA'I'I'ERY P.C.B. and SENSOR

P.C.B. ------------------------------------------------------------- 63
20.5. POWER P.C.B. -------------------------------------------------- e4
21 Wiring Connection Diagram ----------------------------------------- 65
22 Type Illustration of IC D , Transistors and Diodes ............. e7
23 Terminal Function at IC D ------------------------------------------- 53
23.1. K3801 (MN101C74GAA1); Microprocessor ----------------- 68

24 Troubleshooting Flowchart (CD Section Circuit)-
25 Parts Location and Replacement Parts List
25.1. Deck Mechanism (RAA4401-1V) --------

25.2. CD Loading Mechanism --------------------------------------- 74
25.3. Cabinet Part List ------------------------------------------------- 76
25.4. Electrical Part List ----------------------------------------------- 78
25.5. Packaging Materials & Accessories Parts List ------------- 84
25.6. Packaging -------------------------------------------------------- 84