Logitek Standard Elec. Cable Manufacturing MON-10 service manual Preparation for USE

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 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.

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.

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.

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.

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.

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

E X T E R N A L S P E A K E R A N D T H E I N T E R N A L SPEAKER AT THE SAME TIME, AS THE AM- PLIFIER MAY BE DAMAGED IF YOU DO.

Page 3 ** MON-10 Instruction Manual **