AUDIOACCESS PX-600 MULTI-ROOM PREAM/CONTROLLER PRELIMINARY SERVICE MANUAL Harman Consumer Group 250 Crossways Park Dr.
FEATURES Six Zone, Multi-Room, Multi-Source Audio System Flagship of the Audioaccess product line, the PX-600 Multi-Room Preamp/Controller forms the heart of a powerful multiroom audio system. Together with our time proven wall-mounted keypads and conventional audio source equipment, the PX-600 allows you to access and control five different music sources in six different areas simultaneously.
Specifications PX-600 Multi-Room Controller Audio Section Inputs: • • • Five stereo source inputs, 1 mono page input, each with loopthru capability Input impedance: 10k ohms Maximum input voltage: 3.
Specifications Preamp Outputs Zone Outputs Frequency Response 10-84kHz, +0, -1 dB 10-95kHz, +0, -1 dB S/N (ref: 1kHz, 1 Vrms, Filter at 22kHz, Volume at unity gain > 99 dBV > dBV THD+Noise (@ 1kHz, Filter at 80kHz, Volume set at unity gain <0.008% (500mV input signal) <0.004% (1Vinput signal) Maximum Output Level 3.5 Vrms 3.
PX-600 Field Repair
LOCK UPS or SLOW OPERATION Incorrect Wiring IR Interference Keypad Termination Switch
KEYPAD INSTALLATION Make Tight Connections Insure Power, Ground, and Data wires are in Correct Order Provide Strain Relief On KPT Keep On hand Extra KPT Blocks Do Not “Insert” Insulation Into Connector Install Keypad with Termination Switch in “UP” Position (off)
KEYPAD REPAIRS Replace RS 485 Driver Replace Keypad Processor Board
Replacing Processor Board
Audioaccess MCI MCI Multi-room Computer Interface RS-232 to RS-485 Translator
PX-600 Field Repairs Unit Contains 3 Sections – Audio Preamplifiers – CPU – Power Supply Field Repairs May be Performed to Power Supply and CPU
•Audio Signal Path •CPU •Power Supply
Audio Signal Path CPU Power Supply
Control Section Power Supply Main Power Fuse Keypad Fuse
Internal Fuse
POWER SUPPLY FIXES NO POWER – Replace Mains Fuse - 5 X 20 mm 2A Slow Blow – Replace Internal Fuse - F1301 - 5 X 20 mm 500 ma Slow Blow
Main Power Issues Check Power Load on Convenience Outlet – Do not power amps directly with PX-600 – Do not Exceed 200 Watts on PX-600 outlet AC Line condition +- 10% rated Voltage Use Un-switched Outlets for ALL Audioaccess Components PX-600 Powers UP but Cycles Power on and OFF?
Unit Hard Power Up AUDIOACCESS PX-600 VERSION 2.
Replacing RS-485 Driver RS485
TVS Bus Protectors RS-485 Driver
PX-600 Internal Sections Microprocessor Audio Signal Path CPU Power Supply
UNIT CYCLES ON AND OFF REPLACE Replace RS-485 Driver Microprocessor
Microprocessor SRAM EPROM
RS-485 or SRAM Problems AUDIOACCESS PX-600 VERSION 2.04 -ANY- KEY-TO-EXIT- SOURCE EQUIPMENT NOW LOADING……….
Control Problem Descriptions Keypads Initialize but appear “dead” Intermittent Control or “Lock UP” No IR Output
Control Repairs Disconnect Keypad Bus and Check Unit From Front Panel Check Keypad Fuse Data Reset Replace RS 485 Replace SRAM Replace EPROM Replace Microprocessor
PX-600 SCHEMATICS CONTENTS MAIN BOARD REV B0 MAIN BOARD REV B1 MAIN BOARD REV C0 MAIN BOARD REV C1 MAIN BOARD REV D0 MAIN BOARD REV D1 MAIN BOARD REV D2 FRONT PANEL REV C0 PROGRAMMER REV B0
PX-600 Field Repair Guide Version xxxx Rev Level xxx
PX-600 FIELD REPAIR FLOW CHART INITIAL SYSTEM POWER-UP PX-600FRK Power Up Flow Page 1 of 1
PX-600 FIELD REPAIR FLOW CHART KPS BUS OPERATIONS PX-600FRK KPS Bus Flow Page 1 of 1
PX-600 FIELD REPAIR TROUBLE SHOOTING OCTOBER 8, 2003 # XXXXXX] PX-600 REPAIR PARTS LOCATIONS Power Fuse F1301 RS485 Driver U1106 Microprocessor U801 SRAM U804 EPROM U803 Front of PX-600 PX-600 Field Repair Trouble Shooting.
Madrigal Audio Laboratories P.O. Box 781 Middletown, CT 06457-0781 (860) 346-0896 FAX (860) 347-6251 TECHNICAL SERVICES AUDIOACCESS PX-600FRK – PX-600 FIELD REPAIR KIT SEPTEMBER 22, 1999 The Audioaccess Field Repair Kit has been developed for authorized Audioaccess installation companies to improve servicing time and overall customer satisfaction of PX-600 systems. Field repair eliminates system downtime and the cost of multiple trips to job sites to reinstall keypads and controllers.
Audioaccess 250 Crossways Park Drive Woodbury, NY 11797 (888) 691-4171 FAX (516) 682-3528 TECHNICAL SERVICES INFORMATION SHEET PX 600 ALL IR Output / MRX Blaster IR Output DECEMBER 8, 1999 (ORIGNINALLY TECHNICAL MEMO 9711) Page 1 of 1 OVERVIEW The “All” and “Blaster” IR Output ports the on the PX-600 and MRX-NT may be used as an alternative or in conjunction with the individual source IR control ports (ie: CD Tape AUX and Video) to control source components in an Audioaccess system.
October 8, 2003 No00 Madrigal Audio Laboratories, Inc. We define products for your ears, eyes, and mind. 2081 South Main Street Middletown, CT 06457.07081 www.madrigal.com Phone: 860.346.0896 Fax: 860.346.1540 PX-600 LEARNING PARASOUND IR PAGE 1 OF 1 OVERVIEW The IR bursts on Parasound remotes are short quick bursts. If the button on the Parasound remote is held too long the px-600 programmer will lock up.
Voltage Change for PX-600 Directions to change from 120VAC to 230VAC version. Locate the terminations for the power transformer to main PCB. Looking from the back of the unit they are directly above of the AC power connection and main switch. The Common must be connected always.
Audioaccess TECHNICAL MEMO by madrigal audio labs 2081 S. Main St, Middletown, CT 06457 Ph: 888-691-4171, 860-346-0896... Fx: 860-346-1540... PX-600 EPROM CHANGE CAUTION - Be sure to ground yourself before performing this procedure!! This is a static sensitive device. To change the EPROM in a PX-600 - Make sure to follow the ESD Warning on the page 1, provided. Take off the top cover and look for U803 on the main circuit board.
Madrigal Audio Laboratories P.O. Box 781 Middletown, CT 06457-0781 (860) 346-0896 FAX (860) 347-6251 TECHNICAL SERVICES INFORMATION SHEET PX-600 SRAM REPLACEMENT DECEMBER 8, 1999 Page 1 of 2 OVERVIEW This procedure will guide you through the steps needed to replace the SRAM in the PX-600. Read the procedure carefully before beginning the SRAM replacement.
TECHNICAL SERVICES INFORMATION SHEET DECEMBER 8, 1999 Page 2 of 2 SRAM LOCATION The SRAM can be found at location U304. Please see diagram below showing location on the PCB. SRAM EPROM Front of PX-600 PX-600 SRAM Replacement.
PX-600 COMPONENT LAYOUT MICROPROCESSOR U801 485 DRIVER U1106 FUSE F1301 SRAM U804 EPROM U803
PX-600 FIELD REPAIR REAR PANEL LAYOUT AC MAINS FUSE KPS / 485 BUS CONNECTOR KPS / BUS FUSE PX-600FRK Rear Layout Page 1 of 1
PX-600 FIELD REPAIR INTERNAL COMPONENT LAYOUT 485 DRIVER U1106 MICROPROCESSOR U801 FUSE F1301 SRAM U804 EPROM U803 PX-600FRK Internal Layout Page 1 of 1
Madrigal Audio Laboratories P.O. Box 781 Middletown, CT 06457-0781 (860) 346-0896 FAX (860) 347-6251 Technical Services Information Sheet DSS PROGRAMMING JULY 17, 1997 Page 1 of 2 OVERVIEW There are two possibilities for programming the DSS in a PX-600 system, using your choice of source inputs. Each method has its pros and cons, but one of them should work for your particular client’s needs. Follow the examples below to program a DSS to suit the customers needs.
TECHNICAL SERVICES INFORMATION SHEET DSS PROGRAMMING Page 2 of 2 SEPTEMBER 29, 1999 This process will continue until the programming is complete for the number of presets you have selected. Your client may want a specific station attached to press and hold function. All the stations are determined by your programming. After the last GROUP is entered, the programming display shows the source selection screen for LEARN IR.
TECH NOTES IR PROGRAMMING Ideal Programming Conditions In order to minimize interference and maximize the reliability of source control, follow these guidelines during programming: 1. Eliminate direct or bright indirect sunlight near the PX-600 Programmer. 2. Turn off any halogen, fluorescent and neon lights in the area. 3. Position Programmer so that no lights, even incandescent lights, shine directly into the IR input window. 4.
System Learning Remotes These remotes are designed to control the functions of a stack of same-brand equipment, as well as learn the IR commands of other equipment. Often the PLAY buttons on these remotes send two IR commands: one to the receiver to select the input, and one to the player (CD, Tape, etc.) to start it playing. When using this type of remote to program IR commands into the PX-600, the PLAY command often gets cut off and is not stored properly.
Sources with IR input on back panel Many sources, particularly tape decks and tuners, have no IR input to the front panel. These products are designed for use with receivers and a “system” remote. Some tape players and other source components have opto-isolated IR inputs as with Harman Kardon equipment. With these components, plug the emitter outputs of the PX-600 directly into the IR inputs on the back panels using mono mini plug to mini plug cables.
AUDIOACCESS Madrigal Audio Laboratories P.O. Box 781 Middletown, CT 06457-0781 (860) 346-0896 FAX (860) 347-6251 TECHNICAL SERVICES PX-600FRK – PX-600 FIELD REPAIR KIT SEPTEMBER 22, 1999 The Audioaccess Field Repair Kit has been developed for authorized Audioaccess installation companies to improve servicing time and overall customer satisfaction of PX-600 systems. Field repair eliminates system downtime and the cost of multiple trips to job sites to reinstall keypads and controllers.
[logo] [TITLE] [PART NUMBER] OCTOBER 27, 2000 OVERVIEW The PX-600 Field Repair Kit contains components that can be changed in the field to repair the PX-600 system. By following the below flow charts a PX-600 can be diagnosed and repaired at the job site. This will eliminate the need to remove the unit and have the customer down while the unit is being repaired. PARTS INCLUDED DESCRIPTION PART NO.
[logo] [TITLE] [PART NUMBER] OCTOBER 27, 2000 TROUBLESHOOTING Basic Troubleshooting Steps Problem Encountered Keypad locked up - lights come on but no functions. System locked up Zone or system locks up after ON button is pressed. Keypad has no functions and no lights Slow reaction time from keypad, front panel or RT-A remote. Find the problem component Unplug (isolate) all keypad wires from control unit and test unit functions from front panel. Test each keypad on system individually.
[logo] [TITLE] [PART NUMBER] OCTOBER 27, 2000 Is the amp plugged into a switched outlet that is not on? Audio always very loud in all zones. Sources can be controlled but volume can not. Audio drops out then returns Check main power fuse to Amp and to Preamp. Check PX-600 back panel outputs. What volume level does this occur? Does this happen when music has soft passages in it? Replace fuse with same value. Variable audio comes out of the preamp section and NOT the zone outputs.
[logo] [TITLE] [PART NUMBER] OCTOBER 27, 2000 MRX tuner has little or no reception. check perameters of control system. Does it have functions for timed operations? Is the antenna connected? Powered Antenna? Connect antenna. Make sure powered unit is supplied with the correct voltage (AC or DC). US frequencies should be set at .2MHz. Front Panel “talk back” LED lit or blinking – no intentional input. Front Panel LCD (MRX) has no font Check for Proper tuner set up.
[logo] [TITLE] [PART NUMBER] OCTOBER 27, 2000 MRX main fuse blown PX-600 main fuse blown Check for shorted wiring. Check for source input DC offset. Check correct wall voltage. Repair faulty wiring. Change or repair source. Connect to 110VAC. No power on MRX switched outlets. Does the AC relay click on power up? Check fuse on Power supply. Change relay. No power on PX-600 switched outlet. Does the AC relay click on power up? Check fuse on Power supply.
[logo] [TITLE] [PART NUMBER] OCTOBER 27, 2000 PX-603 LED indicator light always stays RED. Unit is in protect mode. PX-603 LED indicator light always stays Yellow. Unit is always in stand-by Check AC line voltage. Check that speakers are not shorted. Check data bus connection. Check line level signal feed continuity. Check DIP switch settings. Check Data bus connection. PX-603 LED indicator light always stays Green. Unit is always ON. Check DIP switch settings. Check Data bus connection.
[logo] [TITLE] [PART NUMBER] OCTOBER 27, 2000 Check keypad connections. polarity. Change fuse w/ 1.5 amp slo-blo MCI Green LED does not indicate passing of code sets because it is not flashing. MCI Red LED does not light PX-600 Field Repair Guide Check Data bus fuse on back panel. Voltage between pins 1 & 4 should be between 8 to 13 VDC. This nonregulated and van be anywhere in this range. Check Data bus connection. Check that MCI is receiving power from Data bus.
Madrigal Audio Laboratories P.O. Box 781 Middletown, CT 06457-0781 (860) 346-0896 FAX (860) 347-6251 Technical Services Information Sheet PROGRAMMING DMX ON THE AUX INPUT AUGUST 10, 1995 Page 1 of 1 OVERVIEW The following procedure should be used to program a DMX on the AUX input. The system will control the DMX unit in an individual channel advance and/or preset channel advance, See Figure#1. PROGRAMMING 1. 2. 3. 4. 5. 6. 7. 8. 9. Go to LEARN IR. Go to AUX. Go to CD.
PX-600 AA MULTI-ROOM PREAMP CONTROLLER Revision Level: 03 Drawing Number: Start Date _____ Line Rev ____ ____ 4 Stop Date ____ Engineering Status: AL Part Number ___________ 1/15/03 630706 Rev Description ____ ___________ 30 01 1/23/98 801-3150-000 00 40 01 1/23/98 800-3160-000-00 00 7/ 3/02 805-3000-008 00 52 80 01 1/23/98 801-3350-000 00 90 02 2/24/98 825-0600-000-B 01 100 02 9/ 4/98 826-0600-000-B B 120 01 1/23/98 820-5000-000-A 00 130 01 1/23/98 870-0600-000
202 4/10/01 735-4500-000 00 210 11/ 6/97 736-2200-000 00 220 11/ 6/97 734-1000-010 00 240 11/ 6/97 690-3000-001 00 250 260 270 280 292 11/ 6/97 11/ 6/97 11/ 6/97 03 6/18/99 2/10/00 700-0600-004-A 700-0600-005-A 700-0600-006-A 926-0600-001-E0 741-1000-021-00 00 00 00 00 00 10 11/ 6/97 302 00 640-00125-00 00 4/16/99 11/11/97 780-0600-001-00 780-0600-002 00 00 330 11/11/97 740-0600-000 00 340 350 11/11/97 11/11/97 735-0100-000-A 780-0600-100 00 00 360 370 11/11/97 11/11/97
