Logitek Standard Elec Cable Manufacturing Switch MON 10 User Manual

Logitek  
MON-10  
Meter Monitor  
& Switcher  
Operation & Service Manual  
Download from Www.Somanuals.com. All Manuals Search And Download.  
MON-10  
INSTRUCTION MANUAL  
Table of Contents  
SECTION 1 — GENERAL INFORMATION  
1-1 General Description. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2  
1-2 Physical Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2  
1-3 Electrical Specifications. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2  
1-4 Instrument Identification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2  
1-5 Where to find help . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2  
SECTION 2 — PREPARATION FOR USE  
2-1 Initial Inspection. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3  
2-2 Claims . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3  
2-3 Repacking for Shipment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3  
2-4 Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3  
2-5 Connecting Inputs and Outputs. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3  
SECTION 3 — OPERATING INSTRUCTIONS  
3-1 Input Selector Pushbuttons . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4  
3-2 SOURCE Switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4  
3-3 METER Switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4  
3-4 VOLUME Control. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4  
SECTION 4 — PRINCIPLES OF OPERATION  
4-1 General Information. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5  
4-2 Fuse. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5  
4-3 Power Supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5  
4-4 Switching and Amplification Circuitry. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5  
SECTION 5 — REPLACEMENT PARTS LIST  
5-1 MON-10. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6  
SECTION 6 — MANUFACTURERS LIST  
SECTION 7 — DIAGRAMS  
Page i  
** MON-10 Instruction Manual **  
Download from Www.Somanuals.com. All Manuals Search And Download.  
SECTION 1 — GENERAL INFORMATION  
1-1 General Description  
and serial number appear on a label on the back of the  
unit near the power cord. All correspondence to your  
Logitek dealer or to the Logitek factory should refer to  
the model number and serial number.  
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.  
1-5 Where to find help  
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. This switch selects whether the meter and  
monitor will be fed the left channel, the right channel,  
the mono sum (L+R) or the out-of-phase difference  
(L-R).  
Logitek customer service personnel are available  
to help with any questions, comments or problems you  
might have with the MON-10, both during and after the  
warranty period. Our hours of operation are 8AM to  
5PM central time. We may be contacted in one of the  
following ways:  
By Phone: 877-231-5870 (U.S.A. & Canada)  
or 713-664-4470  
The output of the source mode switch feeds a meter  
amp, which in turn feeds a built-in VU meter and peak  
LED. The VU meter can be switched between any of  
six ranges, as determined by the front panel meter  
switch. The mode switch also feeds a six-watt monitor  
amp, which in turn feeds either a built-in speaker,  
headphones, or an external speaker.  
By Fax:  
713-664-4479  
By Email:  
By Mail: Logitek Electronic Systems, Inc.  
5622 Edgemoor Drive  
Houston, TX 77081  
1-2 Physical Description  
USA  
The Logitek MON-10 is constructed within a 3 1/2"  
H x 19" W X 7" D cabinet, which is designed to take up  
two rack spaces in a standard 19" equipment rack.  
The power cord, fuse and all connections except the  
headphone jack are located on the rear panel. The  
headphone jack, meter, speaker and all controls are  
located on the unit’s front panel.  
1-3 Electrical Specifications  
Number of Inputs:  
10 stereo  
Input Level:  
normal  
maximum  
0 dBu  
+23 dBu  
Input Impedance:  
140kohms  
Line Output Level:  
Line output switching is passive so the output  
level, impedance and balancing is the same as  
that of the selected input.  
Speaker Output Level:  
maximum  
Speaker Output Noise:  
6 watts  
60 dBu  
ref. 0 dBu input  
AC Line Input Voltage:  
50-60 hz  
105-129 V  
(optional factory modification for 220-240 VAC)  
1-4 Instrument Identification  
The MON-10 is identified by a model number and a  
three or four digit serial number. The model number  
** MON-10 Instruction Manual **  
Page 2  
Download from Www.Somanuals.com. All Manuals Search And Download.  
SECTION 2 — PREPARATION FOR USE  
2-1 Initial Inspection  
Unbalanced equipment can be fed from the output  
of the MON-10 by connecting the “+” terminal on the  
MON-10 to the “hot” input on the unbalanced equip-  
ment, while leaving the “-terminal on the MON-10 un-  
connected. Connect the cable shield to the ground  
side of the input connector on the unbalanced unit.  
When feeding unbalanced equipment from the output  
of the MON-10, it is important that the “-” output termi-  
nal be left unconnected. Connecting this terminal to  
ground will not harm the equipment. However, it might  
cause undesired crosstalk.  
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 un-  
packed. Carefully unpack the unit to avoid damaging  
the equipment through the use of careless proce-  
dures.Inspect all equipment for damages immediately  
after unpacking. Bent and broken parts, dents, and  
scratches should be noted.If damage is found, refer to  
paragraph 2-2 for recommended claim procedures.  
Keep all packing material for possible future use.  
Care should be taken to be sure that cable shields  
are connected to grounded equipment on only one  
end of the cable. On any cable which connects two  
pieces of equipment, of which both are grounded, the  
cable shield must be left unconnected on one end, or  
poor noise performance may result.  
2-2 Claims  
If the unit has been damaged, notify the carrier im-  
mediately. File a claim with the carrier and advise  
Logitek of such action to arrange for repair or replace-  
ment without waiting for a claim to be settled with the  
carrier.  
An external speaker may be connected to the  
SPEAKER OUT terminals on the rear panel. For best  
performance, be sure that the speaker ground return  
is connected to the indicated ground terminals on the  
unit. To use the speaker on the front panel, connect  
the SPEAKER OUT terminal to the INTERNAL  
SPEAKER terminal. DO NOT CONNECT BOTH AN  
EXTERNAL SPEAKER AND THE INTERNAL  
SPEAKER AT THE SAME TIME, AS THE AM-  
PLIFIER MAY BE DAMAGED IF YOU DO.  
2-3 Repacking for Shipment  
If the unit must be returned to Logitek, attach a let-  
ter to it showing the owner’s name and address. A de-  
scription of necessary service should be included in  
the letter. The original shipping carton and packaging  
materials should be used for reshipment if possible.  
Use FRAGILE labels on each surface. Return the unit  
freight prepaid. Be sure to insure the unit for its full  
value. The unit will be repaired promptly and returned  
freight prepaid.  
2-4 Installation  
The MON-10 is designed to be mounted in a stan-  
dard 19" equipment rack by using the four mounting  
holes in the corners of the front panel. While  
flow-through ventilation is not necessary, the unit  
should not be mounted directly above equipment  
which produces significant heat, such as equipment  
using vacuum tubes. The unit should never be oper-  
ated if the ambient temperature is above 55 degrees C  
(131 degrees F).  
2-5 Connecting Inputs and Outputs  
All inputs and outputs (except the headphone out-  
put) are connected via the barrier strips on the rear  
panel. These terminals are “wire-capturing”, so it is  
not necessary to attach crimp lugs to each wire before  
fastening the wire to the terminal. Crimp lugs may be  
used, however, if desired.  
Balanced line-level inputs and the line output  
should be connected the to terminals as indicated on  
the rear panel. Unbalanced sources can be fed to the  
MON-10 by connecting the “hot” lead from the unbal-  
anced source to the “+” input terminal on the MON-10,  
while connecting the “-terminal on the MON-10 to the  
accompanying MON-10 ground terminal.  
Page 3  
** MON-10 Instruction Manual **  
Download from Www.Somanuals.com. All Manuals Search And Download.  
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 re-  
movable 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 af-  
fect the line output signal. From the stereo input se-  
lected on the input selector pushbuttons, the  
SOURCE switch selects the left channel, the right  
channel, the mono sum (L+R) or the out-of-phase dif-  
ference (L-R) signal to feed to the meter and monitor,  
allowing a visual and aural evaluation of channel bal-  
ance and source phasing.  
3-3 METER Switch  
The METER switch determines the 100% VU level  
of the meter. By selecting any of the six positions, the  
user can measure audio levels over a wide range. The  
METER switch DOES NOT affect the line output or the  
speaker and headphone level.  
3-4 VOLUME Control  
This control sets the level fed to the internal  
speaker, the external speaker and the headphone  
jack. It DOES NOT affect line output signal or the me-  
ter.  
** MON-10 Instruction Manual **  
Page 4  
Download from Www.Somanuals.com. All Manuals Search And Download.  
SECTION 4 — PRINCIPLES OF OPERATION  
4-1 General Information  
“Rand “L+Rposition on switch S12b and the “Rposi-  
tion on S12a. The right channel signal is also inverted  
by IC3b and fed to the ”L-R" position on switch S12b.  
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 engi-  
neers are readily available at the factory to provide  
technical assistance both during and after the war-  
ranty period.  
The output of the SOURCE switch S12a is fed  
through the VOLUME pot R38a and buffer amp IC6 to  
the J6 HEADPHONE jack tip contact. Likewise, the  
output of S12b is fed through VOLUME pot R38b and  
buffer amp IC5 to the J6 HEADPHONE jack ring con-  
tact. The output of the J6 tip ring switching contacts  
are combined by R44 and R45 to form a mono sum  
and fed through power amp IC9 to the rear panel AMP  
OUT terminal. This terminal may be connected to an  
external speaker, or it may be connected to the IN-  
TERNAL SPEAKER terminal so that the speaker on  
the front panel is active.  
4-2 Fuse  
The primary winding of the power transformer is  
fused with a 1/2 amp slow-blow type 20mm fuse,  
housed in a fuse holder on the rear panel of the unit. It  
should only by replaced with fuses of the same type  
and current rating.  
The output of S12a and S12b are also combined to  
a mono sum by R32 and R33 and fed to op-amp IC4b,  
which amplifies the signal and feeds it though the me-  
ter trim control R32 to the front-panel VU meter. The  
gain of IC4a, and thus the calibration of the meter, is  
set by the resistor selected by the METER switch, S11.  
The meter may be more precisely trimmed by adjust-  
ing R30 for the desired reading.  
* * * * * * * IMPORTANT NOTE * * * * * * *  
Do NOT replace fuses without first disconnecting  
the amplifier’s power cord from the wall socket, as  
dangerous voltages are present which may cause  
electrical shock. Always use fuses of the same value  
and type as specified in this manual. Do NOT use  
fuses of a higher value than those specified, as shock  
hazard and fire hazard may result.  
The output of IC4b also feeds D3, which rectifies  
the signal and feeds holding capacitor C9, decay time  
resistor R28, and op-amp IC4a . IC4a works as a com-  
parator, comparing the rectified audio signal of the  
peak adjust control, R29. When the audio signal ex-  
ceeds the threshold determined by the setting of R29,  
IC4a supplies current to turn on the peak led, D1.  
* * * * * * * * * * * * * * * * * * * * * * * * * * *  
A blown fuse is most often, although not always, a  
symptom of another failure. Related circuitry should  
always be carefully examined after any fuse failure,  
especially if a replacement fuse also blows.  
4-3 Power Supply  
Each MON-10 contains a well-regulated power  
supply to create necessary operation voltages.  
T1 is a center-tapped step-down power transformer  
which is loaded with a full-wave bridge rectifier, RT1.  
The DC outputs of RT1 are filtered by capacitors C11  
and C12 and fed to two voltage regulators, IC8 and  
IC7. These regulators provide positive and negative  
18 volt outputs which feed the unit’s amplifier stages.  
4-4 Switching and Amplification Circuitry  
Input signals to the MON-10 are selected by the in-  
put selector pushbuttons S1-S10 and fed directly to  
the LINE OUT terminals on the unit’s rear panel. The  
left channel of the selected input signal is also fed to  
IC1b, which isolate the signal and convert it to a sin-  
gle-ended source. The right channel of the selected  
input signal is similarly fed to IC2a and IC2b, which do  
the same as IC1a and IC1b.  
The single-ended left channel output from IC1b is  
fed to the “L, “L+Rand “L-Rposition on the SOURCE  
switch, S12a and the “Lposition on S12b. The sin-  
gle-ended right channel output from IC12b is fed to the  
Page 5  
** MON-10 Instruction Manual **  
Download from Www.Somanuals.com. All Manuals Search And Download.  
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 num-  
ber for the item. A List of manufacturers, arranged alphabetically by manufacturer code, follows this parts list in Section 7.  
All resistors are 1/4 watt, +/- 5% tolerance unless otherwise noted.  
SYMBOL  
5-1 MON-10  
DESCRIPTION  
LOGITEK PART NUMBER  
Capacitors  
C1-4  
C9  
47uf/10V non-polar electrolutic  
.01uf/16V ceramic  
NI-UES1A470MPJ  
CE-UK16-103  
C10  
C11  
C12,13  
C14-18  
C19  
15uf/20V tantalum  
SL-TAP156K020CCS  
SL-TAP224K050HSB  
IL-108TTA035M  
SL-TAP106K025HSB  
IL-33MSS063K  
.22uf/50V tantalum  
1000uf/35V electrolytic  
10uf/25V tantalum  
.33/50V polyester film  
1uf/35V tantalum  
C20  
SL-TAP105KO35HSB  
Diodes  
D1  
Red LED  
IE-LL203R  
D2,3  
D4,5  
D6  
D7,8  
D9  
Small signal diode  
1A signal diode  
6.3V zener 1W  
1A signal diode  
6.3V zener 1W  
MO-1N4148  
MO-1N4001  
MO-1N4735  
MO-1N4001  
MO-1N4735  
Fuses  
F1  
1/2 amp slow blow, 20mm  
LF-239.250  
Integrated Circuits  
IC1-4  
IC5,6  
IC7  
IC8  
IC9  
6 pc.  
1 pc.  
2 pc.  
1 pc.  
Dual bi-fet op-amp  
Dual Quiet op-amp  
-18 volt regulator  
+18 volt regulator  
Power op-amp  
8-pin dip socket  
Heat sink - pc mount  
Heat sink - clip  
TI-TLO72CP  
SG-NE5532N  
TI-uA7918CKC  
TI-uA7818CKC  
NA-LM1875T  
EM-100-083-10-1005  
AA-5632B  
TM-6045B  
BQ-K4-54-AC  
TO-220 insulator  
Connectors  
J1  
6-pin large dip socket  
6-pin socket  
3-pin socket  
Headphone jack  
40-pin socket  
3-pin socket  
6-pin header large  
6-pin header  
3-pin header  
40-pin header  
3-pin header  
Power entry module  
PN-CE156F20-6A  
PN-CE100F28-6A  
PN-CE100F28-3A  
SW-RN114BPC  
PN-050-040-455  
PN-CE100F28-3A  
PN-MFSS156-6A  
PN-MFSS100-6A  
PN-MFSS100-3A  
PN-051-040-153  
PN-MFSS100-3A  
SR-6200.4115  
J2,3  
J4,5  
J6  
J7,10  
J11  
P1  
P2,3  
P4,5  
P7,10  
P11  
P14  
Meter  
M1  
1 pc.  
1 pc.  
2 1/2" VU meter  
2 1/2" light box  
Light bulb  
SO-AL29R, B-SCALE  
SO-29/LIGHT BOX-12VDC  
CM-382  
** MON-10 Instruction Manual **  
Page 6  
Download from Www.Somanuals.com. All Manuals Search And Download.  
SYMBOL  
R1-4  
R5-8  
R9-12  
R13-16  
R17  
R18  
R19  
R20  
R21  
DESCRIPTION  
Resistors  
LOGITEK PART NUMBER  
69.8K, 1%  
4220, 1%  
69.8K, 1%  
4220, 1%  
6810, 1%  
1540, 1%  
909, 1%  
562, 1%  
174, 1%  
53.6, 1%  
5100  
R22  
R23,24  
R25  
560  
R26  
R27  
11.5K, 1%  
5100  
R28  
R29  
R30  
R31  
1M  
5000 peak trim  
10K meter trim  
1000  
BN-3386P-1-502  
BN-3386P-1-103  
R32,33  
R34,  
R35  
R36,37  
R38a,b  
R39  
20K  
1000  
10K  
10  
10K ohm VOLUME pot  
1000  
CL-70W1N04S103A  
R40  
R41,42  
R43  
10K  
10  
1000  
R44,45  
R46  
R47  
10K  
1000  
1.2  
R48  
R49  
10K  
150  
1 pc.  
1 pc.  
Knob  
Cap with line  
SO-S211-250BLACK  
SO-C211BLACK  
Rectifiers  
RT1  
1A bridge  
GI-DF10M  
Switches  
S(1-10)  
S11  
S12  
10 pc.  
2 pc.  
2 pc.  
Input selector  
Meter selector  
Source selector  
Pushbutton cap  
Knob  
EC-10XTA15(NONE)4UGRA  
GR-71BDF30-01-1-AJN  
GR-71BDF30-02-1-AJN  
SH-FA20108010112  
SO-S211-250BLACK  
SO-C211BLACK  
Cap with line  
Speakers  
SP1  
Speaker  
IC-S300SA  
Transformers  
T1  
36v 1A  
36V 1.2A 220V primary  
ST-P8671  
SI-A41-43-36  
T1 (220V version)  
Terminals  
4 pc.  
Terminal blocks  
Label strip  
Label strip holder  
Label strip window  
Power cord  
RD-3PCV-15  
AD-4-15230-0030  
AD-4-25357-0020  
AD-4-25358-0140  
BE-17251  
Selector card  
Terminal card  
Amp card  
LG-131B  
LG-132A  
LG-133D  
Page 7  
** MON-10 Instruction Manual **  
Download from Www.Somanuals.com. All Manuals Search And Download.  
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  
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.  
Intervox (International Components Corp)  
Industrial Electronics Engineers  
Illinois Capacitor  
Laconia, NH  
Minneapolis, MN  
Richmond, IN  
Ogden, UT  
Minneapolis, MN  
Milwaukee, WI  
Dover, NH  
Buffalo Grove, IL  
Minneapolis, MN  
Scottsdale, AZ  
Sunnyvale, CA  
LaGrange, IL  
Melville, NY  
Van Nuys, CA  
Lincolnwood, IL  
Des Plaines, IL  
Houston, TX  
Littlefuse, Inc.  
Logitek (Circuit cards)  
Motorola Semiconductor Products  
National Semiconductor  
Panduit Corp.  
Reed Devices, Inc.  
Signetics Corporation  
ITT Schadow, Inc.  
Signal Transformer  
AVX/Stantel Corp.  
Selco Products  
Schurter, Inc.  
Stancor Products  
Phoenix, AZ  
Santa Clara, CA  
Tinsley Park, IL  
Carol Stream, IL  
Sunnyvale, CA  
Eden Prairie, MN  
Inwood, NY  
Myrtle Beach, SC  
Buena Vista, CA  
Petaluma, CA  
Logansport, IN  
Chicago, IL  
Switchcraft Inc.  
Texas Instruments, Inc.  
Thermalloy, Inc.  
Dallas, TX  
Dallas, TX  
TM  
** MON-10 Instruction Manual **  
Page 8  
Download from Www.Somanuals.com. All Manuals Search And Download.  
SECTION 7 — DIAGRAMS  
Page 9  
** MON-10 Instruction Manual **  
Download from Www.Somanuals.com. All Manuals Search And Download.  
** MON-10 Instruction Manual **  
Page 10  
Download from Www.Somanuals.com. All Manuals Search And Download.  

KWC Indoor Furnishings 10501212 User Manual
Lenovo Laptop K3 User Manual
LG Electronics Blu ray Player BP120 User Manual
LG Electronics VCR TL AT130M User Manual
Linksys Network Router WAP200E User Manual
Mackie Portable Speaker SA1232 User Manual
Melissa Blood Pressure Monitor 630 010 User Manual
Melissa Toaster 643 201 User Manual
Metabo Grinder PE 12 175 User Manual
Microtest Scanner MICROSCANNER User Manual