Logitek MON-10 Meter Monitor & Switcher Operation & Service Manual
All information contained herein is confidential. No portions of this manual may be reproduced by any means without written permission from Logitek Electronic Systems, Inc. COPYRIGHT 1990, LOGITEK ELECTRONIC SYSTEMS, INC.
MON-10 INSTRUCTION MANUAL Table of Contents SECTION 1 — GENERAL INFORMATION 1-1 1-2 1-3 1-4 1-5 General Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 Physical Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 Electrical Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 Instrument Identification . . . . . . . . . . . .
SECTION 1 — GENERAL INFORMATION 1-1 General Description The Logitek MON-10 is a mechanical routing switcher, a six-range VU meter and a six-watt amplifier all in one convenient rack-mounted unit. The MON-10 features ten balanced stereo inputs, any one of which can be selected using front-panel pushbuttons. The selected input is passively fed to balanced output terminals on the rear panel. It is also buffered and fed to a four-position source mode switch.
SECTION 2 — PREPARATION FOR USE 2-1 Initial Inspection Check the shipping carton carefully for external damage. If the carton shows evidence of abuse, ask the carrier’s agent to be present when the unit is unpacked. Carefully unpack the unit to avoid damaging the equipment through the use of careless procedures. Inspect all equipment for damages immediately after unpacking. Bent and broken parts, dents, and scratches should be noted.
SECTION 3 — OPERATING INSTRUCTIONS 3-1 Input Selector Pushbuttons The meter, monitor, and output terminals can be fed from any one of ten different stereo inputs. The input is selected by depressing any of the ten pushbuttons on the front panel. Inputs may be labeled using the removable label strip under the pushbuttons. 3-2 SOURCE Switch The SOURCE switch determines the mode of the signal fed to the meter and monitor, but DOES NOT affect the line output signal.
SECTION 4 — PRINCIPLES OF OPERATION 4-1 General Information The MON-10 is designed to need a minimum of maintenance for long trouble-free operation. Should repair be necessary, the technician should first read the information in the manual concerning the circuits in question, and should follow proper procedures for testing and replacing semiconductors. Logitek engineers are readily available at the factory to provide technical assistance both during and after the warranty period.
SECTION 5 — REPLACEMENT PARTS LIST All replacement parts are stocked in depth at the Logitek factory. Most are also available through local electronic parts distributors. For your convenience in purchasing replacement parts locally, we include the following parts list. All Logitek part numbers consist of a two letter manufacturer code followed by that manufacturer’s standard part number for the item. A List of manufacturers, arranged alphabetically by manufacturer code, follows this parts list in Section 7.
SYMBOL DESCRIPTION LOGITEK PART NUMBER R1-4 R5-8 R9-12 R13-16 R17 R18 R19 R20 R21 R22 R23,24 R25 R26 R27 R28 R29 R30 R31 R32,33 R34, R35 R36,37 R38a,b R39 R40 R41,42 R43 R44,45 R46 R47 R48 R49 1 pc. 1 pc. Resistors 69.8K, 1% 4220, 1% 69.8K, 1% 4220, 1% 6810, 1% 1540, 1% 909, 1% 562, 1% 174, 1% 53.6, 1% 5100 560 11.5K, 1% 5100 1M 5000 peak trim 10K meter trim 1000 20K 1000 10K 10 10K ohm VOLUME pot 1000 10K 10 1000 10K 1000 1.
SECTION 6 — MANUFACTURERS LIST CODE MANUFACTURER LOCATION AA AD BE BN BQ CE CL CM EC EM GI GR IC IE IL LF LG MO NA PN RD SG SH SI SL SO SR ST SW TI TM Aavid Engineering ADC Belden Wire and Cable Bourns, Inc. Bergquist Co. Centralab Electronics Div. Clarostat Mfg. Co., Inc. Chicago Miniature Lamp, Inc. Electronic Components Groupe Ecam Technology General Instruments/Quality Technologies Grayhill Inc.
SECTION 7 — DIAGRAMS Page 9 ** MON-10 Instruction Manual **
** MON-10 Instruction Manual ** Page 10
