Ampex MX 10 Operation Maintenance

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WARRANTY

Ampex warrants this equipment to be free from defects in §
workmanship and material under normal and proper use and
serviCE, and Agrees to repair or replace, without charge, all parts
thereof showing such defects which are returned transportation

E prepaid for inspection to the Dealer from whom the equipment g

, was purchased, within a period of 90 days from the date of de-
livery, provided that such inspection discloses that the defects
are as above specified, and provided also, that the equipment
has not been altered or repaired other than by factory approved

E procedures, subjected to misuse, negligence, or accident, or
damaged by excessive current or otherwise, or had its serial
number or any part thereof altered, defaced. or removed. i

Vacuum tubes and magnetic tapes carry their respective

manufacturers warranty and shall be and are hereby excluded g

from the provisions of this warranty, and as to these items, no

warranty, express or implied, is made by Ampex Electric
motors are warranted for a period of one year. Ampex and its
dealers reserve the right to inspect and repair on the cus-
tomers premises in the determination of a defect. Replace-
ment parts supplied under this warranty carry only the un-
§ expired portion of the original warranty. g

If the purchaser shall use or allow to be used in the product any
parts not supplied by Ampex through its Dealers (except those
parts excluded from this warranty) then this warranty be-
comes void.

This Warranty is expressly in lieu of all other warranties ex-
pressed or implied and all other obligations or liabilities on the
part of Ampex and no person, including any dealer, agent, or
representative of Ampex, is authorized to assume for Ampex
any liability on its behalf, or in its name, except to refer pur-
chasers to this Warranty. In no event shall Ampex be liable for
claims, demands or damages of any nature, however denomin-
ated; Ampexs sole warranty liability shall be to repair defective
items at its factory or to supply replacement parts in accord-
. ant-c with the terms of this Warranty.

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Important: Be sure yOU or your dealer has returned the warranty card
to Ampex, Redwood City, {or your registration oi equipment and re-
ceipt of important supplemental data.

MODEL NO. CATALOG NO. SERIAL NO, DATE OF PURCHASE

MXJO mbWO-Ol
MX-35 01369100]

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Step 2:

Set all front panel level controls at maxi
mum.

Step 3:
Set the oscillator output level at 1 volt ms
for the microphone input or 0.25 volt rms
for the line input. Output of the mixer as
sembly should be 1 volt rms as read on the
vtvm. (See NOTE above.)

OVERALL GAIN ADJUSTMENT

To set the overall gain of the mixer assem-
bly to the nominal value (or any other value
within 10 db of the nominal), use the follow-
ing procedure.

Step 1:

Connect the audio oscillator and the vtvm as
shown in the test set-up. Set the oscillator
at 500 cps.

Step 2:
Set all front panel level controls at maxi
mum.

Step 3:

Set the oscillator output level at 1 volt rms
for the microphone input or 0.25 volt ms
for the line input. (See NOTE in the GAIN
MEASUREMENT paragraph.)

Step 4:
Adjust the LEVEL SET control to produce
a 1 volt rms output as read on the vtvm.
(See NOTE in the GAIN MEASUREMENT
paragraph.)

FREQUENCY RESPONSE MEASUREMENT

Step 1:
Connect the audio oscillator and the vtvm as
shown in the test set-up. Set the oscillator
at 500 cps.

Step 2:

Set all front panel level controls at maxi-
mum.

Step 3:
Set the oscillator output level at 1 volt rms
for the microphone input or 025 volt rms
for the line input (or to the value used in
setting the gain in the GAIN ADJUSTMENT
paragraph).

Step 4:
Make a frequency response check by using
at least ten discrete frequencies between 30
and 15,000 cps. The output level of the
mixer assembly should not vary more than
plus or minus one db from the normal out-
put.

8970105
89-0138
Issue A

Page 16

ers number (or military specification when
available)-and the AMPEX PART NUMBER.

Ampex part numbers are the exact desig-
nation for all parts used in Ampex equipment.
For example: CAPACITOR, fixed; ceramic,
002uf +80% ~20%, 500 vdcw; Sprague Part
No. 36C205 will always bear the Ampex Cata-
log Number 54-0265. THIS IS THE NUMBER

6-2

THAT SHOULD BE USED WHEN ORDER-
ING REPLACEMENT PARTS The schematic
reference number should NOT be used for
ordering parts as the part value may vary with
different equipment types, Include the follow
ing information when ordering parts: Equip-
ment Type, Equipment Serial Number, Ampex
Part Number, and Description of Part, Ex-
ample: 4 ea 54-0265 capacitors for Model MX
10 (or MX-35) Mixer Assembly.

89-0105
89-0138
Issue A