Pioneer SLA-21 Service manual

SPEAKER SYSTEM

ORDER NO.

RRV2415

S-LA21

This product is component of system.

Component Model Service manual Remarks

COMPACT MINI COMPONENT X-LA21 RRV2412
STEREO CD TUNER XC-LA21 RRV2413(RRV2392)
STEREO POWER AMPLIFIER M-LA21 RRV2414(RRV2393)
SPEAKER SYSTEM S-LA21 RRV2415 This manual.

FOR PRECAUTION OF
REASSEMBLY AND DISASSEMBLY

The woofer is attached to the baffle by 4 internal screws. To
detach it, unfasten those screws.

X1BR

The midrange is attached to the baffle by 2 internal screws. To
detach it, unfasten those screws.

The tweeter is attached to the baffle by a double sided tape which
peels off the separator. In addition, the outer part is fixed with a
bond.
The tweeter cannot be detached. When exchange the tweeter, do
it with the speaker panel assy.

Speaker Ring and Speaker Grille (Panching Net) is attached to
the baffle by 4 internal screws. To detach it, unfasten those
screws. To detach Speaker Grille (Panching Net), first remove
Speaker Ring. Then remove Speaker Grille (Panching Net).

PIONEER CORPORATION 4-1, Meguro 1-chome, Meguro-ku, Tokyo 153-8654, Japan

PIONEER ELECTRONICS SERVICE, INC. P.O. Box 1760, Long Beach, CA 90801-1760, U.S.A.
PIONEER EUROPE NV Haven 1087, Keetberglaan 1, 9120 Melsele, Belgium
PIONEER ELECTRONICS ASIACENTRE PTE. LTD. 253 Alexandra Road, #04-01, Singapore 159936

PIONEER CORPORATION 2000

T–ZZK NOV. 2000 Printed in Japan

S-LA21

PARTS LIST

NOTES : Parts marked by “ NSP ” are generally unavailable because they are not in our Master Spare Parts List.

The mark found on some component parts indicates the importance of the safety factor of the part.
Therefore, when replacing, be sure to use parts of identical designation.

Mark No. Description Part No.

Screw (For Mid Unit) BPZ30P100FNI
Screw (For Woofer Unit) BPZ30P200FNI
Elect Cap 2.2 00640201063C

NSP SP Wire 122002020301

Poly Switch 100110020000

NSP Tweeter Unit (B26ZA) 129330000000
NSP Speaker Panel 500PMT322001
NSP Acoustic Tube 509PMT336000

NSP SPK Box BR660PMT334000

NSP SPK Label BR809PMT394040
NSP Serial No Label (SPK) 809000009000

Speaker Panel Assy K--PMTS-SPK

Mid Unit (E52AP3959D) 131206030010

Woofer Unit (A14LC83) 131557030011
Speaker Ring 509PMT325001
Speaker Grille 607PMT326001

Acoustic Cushion 700PMT338000

Rubber Foot 700PMT385000
Screw ST4x8 (For Speaker Ring) 720040400080
Screw PMT3 4x55 72304PMT3000
(For Speaker Panel)
Foam Cushion PMT3 801PMT300000

SCHEMATIC DIAGRAM

Red

Red

Woofer

I N

Black

2

2.2 µF

P. SW

Black
Red

Black

Midrange

Tweeter

Red

Black

P.SW
P.SW has extreme positive resistance-temperature characteristics. (Less than 0.3W at
the normal temperature). If an abnormal current flows to P.SW due to an excessive
input or unusual signal, P.SW heats up and the resistance rapidly increases. With this
function, the speakers are protected from excessive input or unusual signal. The
resistance value increases even when using a soldering iron for repairing, so allow it to
cool before using.