Panasonic sa pm 31 eb service manual

Page 2

SA-PM31E l SA-PM31EB I SA-FM31EG

MP3
Bit rate

Sampling frequency

n General

Power supply

32 kbps - 320 kbps
32 kHz, 44.1 kHz, 48 kHz

AC 230 V, 50 HZ (E/EG)
AC 230 - 240 V, 50 HZ (EB)

n System: SC-PM31E-S

n System: SC-PM31EB-S

n System: SC-PM31EG»S

Notes:

Music Center: SA-PM31E-S
Front speaker: SB-PM31E-M
Music Center: SA-PM31EB-S
Front speaker: SB-PM31E-M
Music Center: SA-PM31EG-S
Front speaker: SB-PM31E-M

Power consumption 130 W 1.8pecifications are subject to change without notice.
Dimensions (w x H x D) 175 mm x 254 mm x 390.7 Mass and dimenstons are approximate-
mm 2. Total harmonic distortion is measured by the digital spectrum
Mass 553 kg analyzer.
Power consumption in standby mode: 0.6 W 3. The labels HIGH" and LOW" on the rear of the speakers refer
to High frequency and Low frequency.
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

Page

1 Safety Cautions ...................................................................... 4
1.1. GENERAL GUIDELINES ................................................ 4

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

5 Handling the Lead-free Solder---

5.1. About lead free solder (PbF)-
6 Precaution of Laser Diode ---------
7 Handling Precautions For Traverse Deck ------------------------------- 8
8 Accessories ---------------------------------------------------------------------------- 9
9 Operating Procedures ----------------------------------------------------------- 10
10 Information on Disc and MP3 ----------------------------------------------- 12
11 Assembling and Disassembling ------------------------------------------- 13
11.1. Disassembly flow chart ------------------------------------------------- 13
11.2. Disassembly of Side Panel L & R--
11.3. Disassembly of Top Cabinet Unit 4
11.4. Disassembly of Deck P.C.B. and Tape Eject P.C.B.- -14
11.5. Disassembly of Front Panel Unit ------------------- 15
11.6. Disassembly of Main Control P.C.B. Function P.C.B. and
Power-In P.C.B. ------------------------- ----16
11.7. Disassembly of Panel P.C.B. ---------------------------------------- 16
11.8. Disassembly of Rear Cabinet --------------------------------------- 17
11.9. Disassembly of Main P.C.B. ----------------------------------------- 17
11.10. Disassembly of Transformer P.C.B. ------------------------------ 18
11.11. Disassembly of Tuner Pack --
11.12. Disassembly of Power P.C.B
11.13. Disassembly of CR16 Mechanism
11.14. Replacement of CD Lid ------------------------------------------------ 20
11.15. Replacement of Cassette Lid ---------------------------------------- 21
11.16. Replacement of the Power l0 and Transistors. -------------- 22
11.17. Procedure for Replacing Pinch Roller and Head Block

(Cassette Mechanism Unit) ------------------------------------------- 23

11.18.

11.19.
11.20.
11.21
11.22.

Page
Procedure for Replacing Motor, Capstan Belt A, Capstan
Belt B, and Winding Belt (Cassette Mechanism Unit) ----- 23
Procedure for Replacing Parts on Mechanism PCB ------- 25
Replacement of CD traverse deck ------------------------------ 25

. Replacement of optical pickup unit (CD mechanism) ----- 27

Replacement of a traverse gear A and a traverse gear B

11.23. Procedure for removing CD loading mechanism
11.24. CR16 mechanism disassembly procedure --------------------- 29
11.25. CR16 MECHANISM ASSEMBLY PROCEDURE ............ 36
11.26. Disassembly of traverse mechanism ............................. 48
11.27. Handling of Cassette Tape jam ..................................... 49
12 Service Positions .................................................................. 50
12.1. Checking procedure ..................................................... 50
12.2. Checking the major P.C.B.

13 Self-Diagnostic Display Function-

13.1.
13.2.
13.3.
13.4.
13.5.
13.6.
13.7.
13.8.

Entering into Self»Diagnostic Mode

Clearing Self-Diagnostic Memory ---------------------------------- 52
Displaying Self-Diagnostic Results ................................ 53
Error Code Table ......................................................... 53
Cassette Mechanism Self»Diagnostic Mode ................... 54
Changer Reliability Test Mode ...................................... 54
Changer Operation Checking ........................................ 55

CR16 Mechanism Ageing Mode -------

14 Procedure for Checking Operation of lndivtdual Parts of

Cassette Mechanism Un

14.1. Operation Check with Cassette Tape

14.2. Operation Check without Cassette Tape ....................... 5e
15 Measurement And Adjustments ............................................ 53

15.1. Tuner/CD Sections ....................................................... 58

15.2. Cassette Deck Section ------------------------------------------------- 58
16 Voltage Measurement and Waveform Chart ......................... 60