Ampex MX 35 Operation Maintenance

Page 2

a

MM MMMMMMMS

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]

Page 6

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 18

REF. NO.

R1
R2
R3
R4
R5

R6
R7
R8
R9
R1 0
311
R12
R13
814
R15
R16

R17
R18
R19
R20
R21
R22
R23

R24
R25
R26
R27
R28
R29
R30
R31

R32
R33
R34
R35
R36
R37
R38
839
R40
R41
R42

R4 3
R44

R46

PART DESCRIPTION

RESISTOR, Fixed: composition; 22K ohms; $1096;
1/2 watt; MIL-R-uA: RCZOGF223K

RESISTOR, Fixed: composition; 1I5K ohms; $1096;
1/2 watt; MIL-R-llA: RCZOGFISZK

RESISTOR, Fixed: film; 47K ohms; $179; 1 watt;
Dalohm Type DC-l

RESISTOR, Fixed: composition; 10K ohms; $1095;
1/2 watt; MIL-R-llA: RCZOGFIDEK

RESISTOR, Variable: composition; 100K ohms; 4:10%;
2 watt; Allen Bradley Part No. JA1N056$104AZ

(Same as Bl)

(Same as R2)

(Same as R3)

(Same as R4)

(Same as R5)

(Same as R1)

(Same as R2)

(Same as R3)

(Same as R4)

(Same as R5)

RESISTOR, Fixed: composition; 1.2 megohms; $1096;
1/2 watt; MIL-R-IlA: RCZOGF125K

{Same as R1)

(Same as R2)

(Same as R8)

(Same as R4)

(Same as R5)

(Same as R16)

RESISTOR, Fixed: composition; 330K ohms; 15%:
1/4 watt; Allen Bradley Type CB

(Same as R23)

(Same as R23)

(Same as R23)

(Same as R23)

(Same as R23)

(Same as R23)

(Same as R23)

RESISTOR, Fixed: composition; 220K ohms; $1096;
1/2 watt; MIL-R-llA: RCZOGFZZéK

RESISTOR, Variable: composition; 1 megohm; 120%;
.3 watt; Chicago Telephone Type PIS-200

RESISTOR, Fixed: Composition; 8.2K ohms; 110%;
1/2 watt; MILR-llA: RCZOGFBZZK

RESISTOR, Fixed: wirewound; 1.5K ohms; 25%;
1 watt; IRC Type BW-l

(Same as R31)

(Same as R32)

(Same as R33)

(Same as R34)

RESISTOR, Fixed: composition; 33K ohms; 110%;
1 watt; MIL-R-llA: RCSZGFBQZK

RESISTOR, Fixed: composition; 4,7K ohms; 110%;
1/2 watt; MIL-R-llA: RC20GF472K

RESISTOR, Fixed: composition; 100K ohms; 110%;
1/2 watt; MIL-R-llA: RCZOGFIMK

(Same as R40)

(Same as H39)

RESISTOR, Fixed: composition; 2.2K ohms; 210%;
2 watt; MIL-R-IIA: RC42GF222K

RESISTOR, Fixed: composition; 240K ohms; 15%;
1/2 watt; MIL-R-llA: RCZOGF244J

RESISTOR, Fixed: composition; 560K ohms; 110%;
1/2 watt; MIL-Il-llA: RCZOGFGCAK

AMPEX PART NO.

041-064

041-050

042-049

041-060

044-015
04 1-064
0417050
042-049
041-060
044-015
041-064
04 1-050
042-049
041-060
044-015

041-084
041-064
041-050
042-049
041-060
044~015
041-084

041-932
041-932
041-932
041-932
04l»932
041-932
041-932
041-932

041-076
044-993
041-059
043-989
041-076
044-993
041~059
043-989
041-153
041-056
041-072
041-056
041-153
041-205
041-374

041-081

89-0138
Issue A