Audioaccess PX-612 User manual

AUDIOACCESS
PX-612
MULTI-ROOM AMPLIFIER
PRELIMINARY SERVICE MANUAL
Harman Consumer Group
250 Crossways Park Dr.
Woodbury, New York 11797

MADRIGAL AUDIO LABS
Procedure No: Revision: Title: PX – 612 TEST PROCEDURE
MP10.01-F1
Prepared By: Wayne Mergel Approved By: Page 1 of 1
Procedure:
I. Connect AC Line to PX-612, and then turn on with the power switch on rear panel. Observe LED on the
front panel. It should initially be Red, then change to Amber. Watch for about 1 minute to ensure it does
not turn Green. Set all six stereo/bridged switches to the stereo position (switched to right).
II. Connect speaker harness to PX-612 and the speaker switch box.
III. On PX-612 back panel connect Audio Source to Zone 1 Input.
IV. As soon as the Audio Source is connected to Zone Inputs on the rear of the unit, the front panel LED
should change from Amber to Green.
V. Make sure that the speaker switch box is set to the same number as the Audio Source is plugged into.
You should be able to hear Audio in both speakers.
VI. Move Right Audio Source to other Zone 1 Right RCA and listen for Audio cut off and come back on the
right speaker.
VII. Switch Zone 1 to bridged mode by moving switch Left. Then move Left Audio Source to the second Zone
1 Left RCA. The Audio should cut out completely on both Left and Right speakers.
VIII. Switch back to stereo on Zone 1 by switching switch back to the Right (stereo mode) and move the Left
RCA connector to Zone 2 and listen for the Left speaker to cut out.
IX. Switch the speaker switch box to Zone 2 and listen for the Left channel to come on as the Right goes off.
X. Move Left RCA to Zone 2 also.
XI. Repeat steps VI through X, working through all Six Zones.
XII. As each Zone is activated observe that the Green LEDS inside unit light as it’s respective zone “sees” an
Input.
XIII. After testing all Six Zones disconnect Audio Source and leave unit on for several minutes. The Front
panel LED should eventually change to Amber Again.
XIV. This completes Testing.
Purpose: The purpose of this document is to establish a procedure for testing PX-612 units.
Application: For use in the PX-612 Department
Related Documents: None Equipment Needed: 1-Audio Source, 1 -Speaker Switch Box, 1-48” Speaker Wire Harness

PX-612
PX-612
PARTS CROSS-REFERENCE
DESCRIPTION
023-0110-0 BRIDGE RECTIFIER, KBPC25-02
030-2271-0 CAP, CER AX, 271, 10%, 50V
001-1042-0 CAP, CER, AX, 101, 10%, 50V, NPO
030-2103-0 CAP, CER, AX, 103, 10%, 50V
030-2104-0 CAP, CER, AX, 104, 10%, 50V
030-2104-0 CAP, CER, AX, 151, 10%, 50V
030-2180-0 CAP, CER, AX, 18 pf, 10%, 50V, NPO
030-2222-0 CAP, CER, AX, 222, 10%, 50V
030-2224-0 CAP, CER, AX, 224, 10%, 50V
030-2332-0 CAP, CER, AX, 332, 10%, 50V
030-2334-0 CAP, CER, AX, 334, 10%, 50V
038-0106-0 CAP, ELEC, AX TR, 106, 20%, 16V
038-0107-0 CAP, ELEC, AX TR, 107, 20%, 6.3V, 5X11M
038-0336-0 CAP, ELEC, AX TR, 336, 20%, 25V
038-2106-0 CAP, ELEC, AX, 106, -10/+50%, 50V
038-1107-0 CAP, ELEC, AX, 107, -10/+50%, 50V
039-7102-0 CAP, MET PAPER Y-CAP, 102, 20%, 250V
039-7474-0 CAP, MET PAPER Y-CAP, 474, 20%, 250V
032-3105-0 CAP, PE, 105, 5%, 25V (LOW V FILTER)
031-1339-0 CAP,ELEC, RAD, 339, 20%, 50V (FILTER)
020-2105-0 620-2002-000 DIODE, 1N4002
020-1103-0 620-2914-000 DIODE, 1N914, 75ma, 100V
020-1103-0 620-5819-000 DIODE, SHOTTKY, 1N5819, 1A, 40V
020-0120-0 620-2599-000 DIODE, ZENER, 1N759A, 12V, 5OOmw
020-0030-0 DIODE, ZENER,1N4372, 3.0V, 500mw
020-0050-0 620-2597-000 DIODE, ZENER,1N751, 5.0V, 500mw
780-0600-051 END CAP, LEFT
780-0600-050 END CAP, RIGHT
101-0000-0 720-2500-010 FOOT SNAP IN GOLD
091-0016-0 664-2210-000 FUSE, 5MM, 10A, SB
664-2208-000 FUSE, 5MM, 8A, SB
091-0017-0 FUSE, PICO, 7A
605-7712-000 IC, 5532N BI-POLAR OP-AMP
001-1195-0 605-0339-000 IC, LM339A, QUAD COMPARATOR
081-0030-0 INDUCTOR, 1 UH W/ 10 OHM 2W RES
081-0057-0 INDUCTOR, 2 UH, 7A FERRITE
092-0007-0 JACK, RCAX4, HORIZ, GOLD, RD/WT
025-010-0 LED, GRN, 3MM
025-0009-0 LED, RED/GRN
025-0023-0 621-2009-000 LED, YEL
022-2079-0 MOV, 130V, 6500A, 1500pf
070-0520-0 POT, 500 OHM TRIM
AA132-003-0 760-4600-003 PX-612 FRONT PANEL
AA206-0005-C PX-612 INPUT BOARD (COMPLETE ASSY)
AA145-0003-D PX-612 POWER BOARD (BLANK)
AA145-0003-D PX-612 POWER BOARD (COMPLETE ASSY)
AA132-001-0 760-4600-008 PX-612 TOP COVER
014-0066-0 633-7812-002 REGULATOR, LM7812, +12V, 1A
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PX-612
014-1065-0 633-7912-002 REGULATOR, LM7912, -12V, 1A
081-0009-0 RELAY, JW2EN, DC12V
050-1302-0 RES, CARBON FILM, 1.3K OHM, 1/8W, 5%
050-1001-0 RES, CARBON FILM, 100 OHM, 1/8W, 5%
050-1004-0 654-0040-100 RES, CARBON FILM, 100K OHM, 1/8W, 5%
050-1203-0 RES, CARBON FILM, 12K OHM, 1/8W, 5%
050-1501-0 RES, CARBON FILM, 150 OHM, 1/8W, 5%
050-1801-0 RES, CARBON FILM, 180 OHM, 1/8W, 5%
053-1002-0 RES, CARBON FILM, 1K OHM, 1/2W, 5%
050-1002-0 654-0020-100 RES, CARBON FILM, 1K OHM, 1/8W, 5%
050-1005-0 RES, CARBON FILM, 1M OHM, 1/8W, 5%
050-2204-0 RES, CARBON FILM, 220K OHM, 1/8W, 5%
050-2203-0 RES, CARBON FILM, 22K OHM, 1/8W, 5%
050-3301-0 RES, CARBON FILM, 330 OHM, 1/8W, 5%
050-3303-0 RES, CARBON FILM, 33K OHM, 1/8W, 5%
053-0470-0 RES, CARBON FILM, 4.7 OHM, 1/8W, 5%
054-0470-0 650-2348-005 RES, CARBON FILM, 4.7 OHM, 1W, 5%
050-4702-0 RES, CARBON FILM, 4.7K OHM, 1/8W, 5%
053-4701-0 RES, CARBON FILM, 470 OHM, 1/8W, 5%
050-4704-0 RES, CARBON FILM, 470K OHM, 1/8W, 5%
050-4703-0 RES, CARBON FILM, 47K OHM, 1/8W, 5%
050-6801-0 RES, CARBON FILM, 680 OHM, 1/8W, 5%
055-.100-1 RES, CERAMIC WW, .10 OHM, 2W, 5%
060-1003-0 RES, METAL FILM, 10K 1/8W, 1%
060-4992-0 RES, METAL FILM, 4.99K 1/8W, 1%
050-0000-0 651-0000-000 RES, METAL WIRE, 0 OHM, 1/8W
090-0022-0 SW, ROCKER, DPST, 10A, 250V
090-0033-0 SW, SLIDE, DPDT, PC MOUNT (BRIDGE SW)
022-0043-0 THERMISTOR, PTC, 70 DEG C
080-0067-A TRANSFORMER 115/230V, SEMKO
012-1001-0 211-21302-00 720108 TRANSISTOR, 2SA1302, PNP
012-1002-0 720130 TRANSISTOR, 2SA1837, PNP
012-0001-0 210-43281-00 720107 TRANSISTOR, 2SC3281, NPN
012-0002-0 720131 TRANSISTOR, 2SC4793, NPN
010-0012-0 624-0006-000 TRANSISTOR, MPSA06 NPN, TO-92
010-1013-0 624-0056-000 TRANSISTOR, MPSA56 PNP, TO-92
Page 2

PX612 PARTS LIS
T
AASWH/3 3M SPEAKER WIRE HARNESS
700-1000-256 48" SPEAKER WIRE HARNESS
AA145-004-D POWER BOARD COMPLETE ASSEMBLY
800-3160-000-00 600/612/603 BOX
805-3000-007 600/612/603 FOAM SET
B Stock Replacement Amp/ with trade
350206 5 AMP 250 VOLT SLO BLO FUSE