Page 1
Installation, Operation and Maintenance
TVA 132 & TVA 142
Television Audio System
Bllikainen and Friends, Inc.
101 Suburban Road
San Luis Obispo, California
(805) 541-0200
Page 2
DDENDUM
A
++
R201
J9K
CZOI
75
PF
mar 39u mar 39u
OLD
NEW
C2OI
C2OI
tsPF
tsPF
Hallikainen & Friends
101
Suburban Road, San Luis Obispo, CA 93401 (805) 541-0200
Page 3
The circuit chanhe shown cn reverse side is made on all
TYAlL2 systems, serial numbers
kits are available for previous units.
Y.'he chan;;es shown are for channel one pro&ram. The change
is duplicated for each of the six audio input channels, and
for the program and audition channels, resulti% in 12
reed relays being; installed-
The modification results in a substantial improvement in
off chanael attenuaticn. With the modification, off channel
attenuation exceeds 7n dB.
1130
and above.
Update
I<ost pf the circuitry remains the same.
Delet.ion of C211
Installin, K?l2 for U212, And chabiw 11211 from a series
760 ohE resistor to a shunt 2 K resistor. The new R211
maintains proFer Front Fanel LET) xrrent
hi&h volt&e transients
c211,
C231,
q251,
R211,
R231,
R251,
t’2l.2,
75232, U332, iJ242, U342,
75252,
PARTS ADDED
R311,
R331,
R351,
G312, c'222,
~352,
c221,
5241,
~261,
~262, 75362
(which cancelled Some leakabe throbh L'212),
from the coil of
C321,
H&F 1529-3000
c341,
~361
H&S 4711-4561
U322,
H&F 37174001
The chan&es are:
and suppresses
F212.
30 pF Polystyrene
56~
ohm, & watt
LED/LDR optical coupler
~212,
K312,
p222,
~322,
K232, K332, P242, K342,
F252, !?352,
2211, R311, R221, R321,
R231, R331, R241, R341,
R251,
R351, ~261, R361
~262, ~362
H&F 490 0112
H&F 4711-4202
Reed Xelay, SPST-IIO,
12 VDC, EIIC
2 K, $ watt
B~A~~AH
Page 4
TVA Series
Audio Systems
Finally, An Expandable Audio Mixing System
Designed To Be Controlled By Your Video Switcher
0 High quality audio
0 Rack-mount constructron
0 Audio-tollow-video plus manual control
0 Noiseless audio switching
0 Mic & line mixing
0 Monitor speaker outputs
l Expandable to 36 inputs
l Comprehensive monitoring and metenng facrlltres
0 Three output D.A.s on program and audition channels
The H&F Series combmes Audio-Follow-Video and manual control In a flexible au&o
system consisting of rack-mountable components which can provide for your present and
future audio mixing requirements. The system is expandable to 36 balanced inputs in groups
of SIX. If offers balanced audition. program. and cue outputs plus two monitor channels.
Then/A 142 is the mixing stageof the H&F television audio system. Each TVA 142 Mixer
Module has six balanced mic or line inputs with individual gain controls. Audio routing to
the program and audition channels IS controlled either manually or with the audio-followvideo feature. In the AFV mode. the video switcher. through ground switching. activates a
nolseless control circuit sending audio to either the program or audition channels or both.
Front panel LED Indicators show how each Input has been assigned. Manual operation !s
easily accomollshed with a premium grade lever switch above each Input gain control.
Audio levels are monitored with peak flashers. The TVA 142 provides three outputs.
program and audition to feed a line and a cue output for local USC. The TVA 142 WIII serve as
a stand alone mixer for many applications.
The TVA 132 Output Module provides three line level distribution amplifier outputs for
multlple program and audition feeds. It offers accurate VU meters on both program and
audition channels. One TVA 132 module can. when used with one to SIX TVA 142 Mixer
modules. provide two seperate audio mixes with metering. This can be very useful when one
program IS “on-air” and a second one IS to be simultaneously recorded. The TVA 132
meters. feeds. and monitors while the TVA 142 affords lndivldual level control and tally
tndlcators.
Hallikainen & Friends
101 Suburban Road, San Luis Obispo, CA 93401-7590
(805) 541-0200
Page 5
Technical Specifications
Output Module.
TVA132
Number of inputs
Number of outputs
Option 1
Monitor inputs
Meters
Output levels
Distortion, Noise, Response, for program audition and cue channels, See corresponding specs in TVA
Mixer Module
NA 142
Number of inputs
Input sensitivity
Input impedance
Number of outputs
Outputs: Pgm, Aud, and Cue
Maximum undistorted Output
Distortion, @8dBm to 22dBm
Signal to noise, unweighted
Frequency response at 8dBm
Crosstalk
36 maximum, in units of 6 each
3 Program balanced 600 ohm DA outputs
3 Audition balanced 600 ohm DA outputs
1 balanced 600 ohm Cue output
1 10 Watt, 8 ohm Monitor 1
1 10 Watt, 8 ohm Monitor 2
Replace 10 Watt monitor amps with
600 ohm balanced outputs.
Program, Audition, Cue, Air, Aux.
2 large VU meters for program and audition, OVU
internally adjustable for OdBm to +8dBm line out
+8dBm nominal for all balanced outputs
6 balanced, assignable mic or line level
-1 Odb line, -58db mic
15K bridging line, 150 ohms mic
1 each Program, Audition, Cue
+8dBm, 600 ohms balanced
+22dBm
0.25% or less
7448 line, 60dB mic
&l dB 20Hz to 20 KHz
-82db @ 1 kHz
14:
Unless otherwise specified, all specifications and measurements are referenced to 1 kHz,
+8dBm output level. Odb = 0.775 v.
Audio follow control
Control output (Tally)
Indicators
Automatic control
Peak Flashers
Power and Size
AC power requirements
Size
Ground switched, 12 volts open circuit
Ground switched 28vdc, 500mA max., open
collector transistor
Long life LED status indicators
Automatically follows video switcher- each mixer
input is able to feed program & audition (preview)
simultaneously.
Program and Audition. Adjustable threshold.
100 to 130vac, % amp, 60Hz
Standard EIA 3% inch (88.1 mm) Rack panel,
chassis, 1 03/4 inch (273 mm) deeps, clear anodized
aluminum
Page 6
On request of Larry Seese (T-ASA, Sacramento Army Depot,
Sacramento,
assembly in the
CA
95813: (916)
TVA142
388-22j6),
haa
been changed.
the lever switch
The changed
TVA142 part number becomes 0000-1421, while the standard
unit remains 0000-1420.
The change enables the
AFV
mode ONLY when a
lever switch
is in the ceater position. In the standard system, AFV
is always enabled, allowing simultaneous assignment of
a single input ~-ID two outputs, one assignment by the
switch and the other b
avsingle input may sti I 1
under
To accomplish
AFV
control,
the
change,
AFV.
be
With the modification,
asrigned to two outputs
each
switch assembl 1 (p/n 0010-0002)
.
has been replaced with switch assembly p/n 00 O-0009.
The parts in 0010-0009 are the same as those in 0010-0002,
except that the switch (p/n 5142-0001) has
been
changed
to one that has four forar C contacta (p/n 51~24002).
A
schematic of the 0010-0009 switch assembly is
shown
below.
Hallikainen & Friends
June 1980
Page 7
ADDENDUM
On request of Mx. Paul Schleisman
The Pentagon,
the microphone input gain on the TVA142 has been increased
by 20 dB.
This chawe is accomplished by changi&g.~R116,
R156,
C143, C153, and ~163 are deleted.
This
numbers 1081 and above. The part number on the TVA142 main
printed circuit board becomes 0011-1262.
These changes increase preamp gain from 30 dB to 50 dB. With
front panel gain control at maximum, an input level of -73 dBm
(at 150 ohms) causes an output level of +8 dBm.
?IJwsez;Ealent input noise remains unchawed at approximately
The -1 dB high frequency decreases from 18 KHz to 12 KHz, typical.
and
chame is included on all TVA142 option 1 systems, serial
.
Room ZE-325, Washington,
R166
from 160K to 1.5M.
(Navy Broadcast Service,
DC 20350: (202)695-2915),
~126, ~136, ~146,
In addition, Cl13, C123, C133,
Hallikainen 8~ Friends
October 1980
Page 8
Page 9
TABLE OF CONTENTS (cant)
ASSOCIATED DRAWINGS
TVA 11X Schematic, R%X=
TVA l!.ZX Component Placement, II=@&
TVA 142 Schematic, 1252MM
TVA 142 Component Placement, 1252MM
Universal Power Supply Schematic, 1241PS
Universal Power Supply Component Placement, 1241PS
Power Amplifier Schematic, 1341PA
Power Amplifier Component Placement, 1341PA
Power Amplifier Power Supply Schematic, 1351PS
Power Amplifier Power Supply Component Placement
C-038
C-052
C-051
c-053
B-057
A-042
B-059
B-053
B-060
A-054
Page 10
Hallikainen & Friends,
subject to the conditions herein below set forth,
a California corporation (Corp) hereby warrants,
that should this product
prove
defective by reason of improper workmanship or defective materials within one
(1) year from date of original purchase, Corp
will repair
or, at
its option,
replace the defective unit without charge for either parts or labor.
CONDITIONS OF WARRANTY
‘1.
Notice.
Purchaser shall notify Corp at its principal place of
business by telephone within three (3) days after malfunction of the product -
tiiae is deemed of essence.
2. Proper Delivery.
The unit must be shipped, freight prepaid, or
delivered to the manufacturing plant of Corp located at San Luis Obispo, CA
93401, in either its original package or a similar package affording an equal
degree of
by anyone other than Corp,
electrically identical components,
protection.
The unit must not have been previously altered, repaired or serviced
3.
except for replacement
or routine adjustments as
of
plug in
components with
outlined in the
accompanying manual. Upon repair by the customer, the Corp shall replace
defective plug in parts returned to Corp,
expenses incurred in a field repair.
.
but shall not be liable for any labor
4. The serial number on the unit must not have been altered or removed;
the unit must not have been subject to accident, misuse, or operated contrary
to the instructions contained in the accompanying manual.
This warranty does not cover peripheral devices of other manufacturers
5.
supplied as part of a system by Corp (such as CRT terminals, printers, etc.);
Purchaser's only remedies for malfunction with respect to such devices are with
the equipment's manufacturer.
This warranty does not cover transportation expenses to and
6.
from
service facility.
This warrant is in lieu of any other oral,
7.
written, or implied
warranty, whether made by salesmen, agents, or other representatives of Corp.
Except to the extent prohibited by applicable law, all implied warranties
made by Corp in connection with the product, including the warranty of
merchantability are limited in duration to a period of
one (1) year from the
date of original purchase, and no warranties, whether express or implied,
including said warranty of merchantability shall apply
said period. Should
this product prove defective in worlcmanship or material,
to this product after
the consumer's sole remedy shall be such repairs or replacements as hereinabove
expressly provided; and under no circumstances shall Corp
or damage, direct or consequential, arising out of
use,
this product.
the
be
liable
use
of or inability
for any loss
to
Page 11
INSTALLATION
The TVA System is flexible, allowing many types of installation
ranging from a simple stand-alone mixer module to a complex thirty-six
input APV fully monitored audio console.
Modules may be installed wherever desired. The only thing to
consider is operation. Usually the mixer module will go as close to
the operator as possible,
We reconanend the output and mixer modules be separated by no more than
ten feet.
TVA 142 Mixer Module: Installation of the TVA 142 Mixer Module
consists of selecting the desired input level and connecting the audio
inputs,
or line level by two switches.
on the PC Board.
viewed from the front of the box.
left for mic level and to the right for line level operation. Other
switch combinations will give non-standard gains and impedances for
special situations. Figure 1 shows the location of switches. The
control inputs, mute outputs and audio outputs.
The mixer module inputs are individually selected to either mic
Their adjustment is described based upon their being
with the output module mounted next to it.
These switches are internal, mounted
Both switches are switched to the
switches corresponding to each mixer input are as follows:
Mix 1 select switch Sill and S112
Mix 2 select switch
Mix 3 select switch S131 and S132
Mix 4
Mix 5
Mix 6
select switch S141 and S142
select switch Sl51 and S152
select switch
S121 and S122
S161 and S162
Page 12
The audio inputs connect to TBl and TB2 on the MIX 1-6 terminals.
The input terminates the mic inputs at 150 ohms and line inputs at
10 K-ohms. e If the line inputs need further termination, such as 600
ohms, simply add a 620 ohm terminating resistor across the input
terminals.
Shielded or unshielded paired wire can be used for Iine inputs
because the transformer inputs are balanced. Shielded wire is
recommended for the mic inputs for greatest noise i-nity.
The control inputs connect to TB3 and TB4 and are referenced to
ground. A ground lug is provided for each input. If an input is to
4
be mixed into the program bus, ground its corresponding CP (control
program) terminal. If the input is to be mixed into the audition bus,
ground its corresponding CA (control audition) terminal. Both the CA
and CP may be grounded simultaneously to feed both channels.
Normally in an audio-follow-video application, each channel's
CP would be connected to the ground switched tally output corresponding
to the video switcher input that the audio is to follow. Caution:
the control inputs must be ground switched. Other devices can be
driven from the switched tally only if they are ground switched.
If the switcher tally output is not ground switched, an interface
must be built. Most switchers either have existing ground switched
outputs or floating relay outputs. One side of these contacts can be
tied together and connected to ground to supply ground switching.
The mute outputs for the six channels are also available on TB3
and TB4. They are open collector grounded when activated. They are
designed to sink current from relays or other devices to 500 mA with
Page 13
5
a voltage no greater than +28 V,D,C. open circuit.
tion) or MP (mute program) outputs can be tied together to combine several
mute outputs to one relay. These mute outputs can be used to control a
studio monitor relay or for any reason to indicate that an input is on.
The audio outputs for the CUB, AUDITION, and PROGRAM channels are
located on TB2.
output has its own separate ground lug.
An unbalanced load may be driven by one side of the balanced line
referenced to ground.
TVA 132 Output Module: Installation of the TVA 132 Output Module
consists of connecting the summing amplifier inputs, the external and
air monitor inputs, and the line and monitor outputs.
The summing amplifier inputs are unbalanced high impedance. Keep
They are balanced 600 ohm impedance outputs. Each
Several MA (mute audi-
the cables short to avoid ground loops and noise pickup.
conductor, shielded cable. Connect the center conductor to one of the
TVA 142 PGM out terminals and the shield to associated-ground terminal.
On the TVA 132, connect the center conductor to one of the P terminals.
Connect the shield to the ground lug next to it.
connect another mixer module from its PCM output to a different P
terminal and adjacent ground.
Up to six mixer modules.can be connected to one output module. Do
not bus the program outputs from one mixer module to another and do
not connect more than one mixer output to an input on the output module.
In a similar manner,
mixer module to an A terminal and ground terminal on TBl and TB2 on
the output module using a single conductor shielded cable.
connect the AUD (audition) output of each
In the same manner
Use single
Likewise, connect the CUE output of each mixer module to a Q
terminal and ground terminal on TB2 of the output module.
Page 14
6
The air and external inputs are provided to bring other inputs up
through the monitor amplifiers.
air monitor audio from the demodulator is connected to the AIR input
terminals. Both the AIK and KKT inputs are balanced 10 K-ohms impedance.
The output module provides three outputs each for Program and
Audition. These are found on TB3 and TB4. Each is 600 ohms balanced
and will drive any equal or higher impedance correctly.
loads can be driven from one output terminal and ground.
The CUE output is also 600 ohms balanced and is usually connected
to a small monitor amplifier and speaker for monitoring the cue bus.
Unbalanced loads can be driven from one terminal and ground.
The two monitor outputs also have 600 ohm balanced outputs. These
may drive a high quality amplifier and speaker for audio monitoring of
any channel in the TVA system.
Usually, in a broadcast application, the
Unbalanced
They also can drive unbalanced loads
from one output tenninal to ground.
Two mutable ten watt power amplifiers are provided for monitoring.
Connect a 8 ohm speaker to the monitor output terminal S (speaker) and
the SG (speaker ground) terminal.
mute the amplifier when grounded to the SG terminal.
monitor 2 drives a speaker in a studio,
channel MA and MP terminals on the TVA142 mixer module which are used in
that studio.
Option one on the TVA132 deletes the power amplifiers. A pair of
balanced 600 ohm lines are provided for driving external power amplifiers.
In this case, the monitor amplifiers have balanced 600 ohm outputs.
may drive a high quality amplifier and speaker for audio monitoring of any
channel in the TVA system.
When mics are turned on, the speaker will mute.
They can also drive unbalanced loads from one
The other terminal marked M (mute) will
For example, if
connect its M terminal to the mic
These
output terminal to ground.
Page 15
THEORY OF OPERATION: TVA 131
The TVA 132 is the output module of the TVA series of audio
equipment.
gram,
ohm outputs each,
metering,
part number 0010-0004).
elsewhere in this manual.
amplifier.
stabilization capacitor is provided for each op amp.
will be described here.
audition, and cue outputs of up to six TVA 142 mixer modules.
The TVA 132 also provides audio distribution (three balanced 600
The TVA 132 is powered by a standard power supply module (H&F
The TVA 132.i.s based on the NE5534, a high quality operational
Program and audition circuitry are similar. Only program circuitry
The TVA 132 allows for system expansion by mixing the pro-
for audition and program), program and audition
and monitor select and gain control functions.
The operation of the power supply is explained
Each op amp is powered with 2 18 V. A 22 pF high frequency
Program Operation:
by an L-pad prior to being applied to the swxning amp. For Pl input,
this pad consists of RlOl and R103.
allows for a larger range of gain control in the summing amp.
The output of each pad (high side of R103 for Pl) is summed in
UlOl.
R119 adjusts the overall system gain to unity.
frequency roll-off,
offset by balancing bias current voltage drops.
the algebraic sum of inputs Pl through P6.
For Pl, the s-r gain is determined by R102, R119, and R120.
decreasing system noise. R130 minimizes output
Each program input (Pl through P6) is attenuated
The pad provides 6 dB of loss, and
Cl02 provides high
The output of UlOl is
Page 16
The output of the summing amplifier drives three balanced line
8
driving amplifiers,
each consisting of two unity gain amplifiers.
Each line amp operates in a similar manner.
U104 acts as a unity gain inverting amplifier. R136 and R138
set the gain to unity. Cl09 provides high frequency roll-off. R137
allows the non-inverting input bias current to develop a voltage
similar to that on the inverting input, decreasing the output offset
voltage.
The output of U104 is coupled through Cl10 and R139 to the output.
Cl10 blocks any DC offset present on the output of U104. R139 provides
half the 600 ohm source impedance that is seen by the load.
U104 also drives MlOl, the program W meter. R146 provides for
calibration of the W meter.
UlOl also drives U105, a non-inverting voltage follower. This
non-inverting amplifier provides the other half of the balanced 600
ohm output.
The balanced audio output appears similar to an output driven by
a 600 ohm transformer with the center tap grounded. Unbalanced loads
may be driven by connecting the load between one output and ground.
U106, whose operation is identical to U104, also drives R147.
R147 provides an adjustable program level to the monitor circuitry.
Cue Operation: The cue outputs of up to six TVA 142s are summed
in U301. R307 and the input resistors (R301 through R306) set the
gain at unity. C302 provides high frequency roll-off.
U301 drives U302, C302, and R314.
U302 acts as a unity gain inverting amplifier. Gain is set by
Page 17
R310 and R311. C305 provides high frequency roll-off. R312 allows
U302 bias currents to develop balanced voltages, minimizing output
9
offset.
line driving impedance.
cue output.
select circuitry.
configurations. The standard TVA132 provides an unbalanced mutable speaker
level output for each monitor.
provides balanced 600 ohm line level outputs. This line driving circuitry
is the same 8s the other active balanced line drivers used in the TVA132
primary of the input transformer to one of the program feeds of the TVA132,
C306 blocks any offset voltage, while R313 provides half the
U301 driving C303 and R309 provides the second half of the balanced
U301 drives R314 to provide an adjustable level to the monitor
Monitor Operation: The TVA132 monitor circuitry is available in two
Option 1 deletes the power amplifiers and
In the standard TVA132, the monitor select switches connect the
or to one of the external inputs. Level controls are protided on each
intern81 monitor feed to allow levels to be balanced with external sources.
The secondary of the input transformer drives the level control and
the 1341PA power amplifier, covered later in this manual. The use of an
input transformer allows external monitor inputs to bridge balanced or
unbalanced lines.
The TVA132 option 1 has the secondary of the input transformer drive
the level control and a standard active balanced line driver. The
balanced output may drive balanced loads, or by connecting between one
side and ground,
drive unbalanced loads.
Page 18
THEORY OF OPERATION: TVA 142
The TVA 142 is a high quality audio mixer designed around the
10
NE5534 operational amplifier.
throughout. The following discussion provides specific details on the
circuit design to aid in trouble-shooting.
schematic diagram.
Preamplifier Section:
each input.
in an input transformer, provides gain,
The preamp section of input one will be discussed in detail.
Tlll provides balanced-to-unbalanced conversion, impedance
conversion, and voltage gain.
to bridge a 600 ohm line or operate from a 50 to 250 ohm microphone
source. When in the line position,
18 dB loss necessary to prevent transformer overload while presenting
The preamp section converts the balanced line to unbalanced
Standard op-amp techniques are used
Refer to the TVA 142
The TVA 142 contains six preamps, one for
and provides impedance matching.
Slll determines whether the input is
Rlll, Rll2 and R113 provide the
a high (bridging) impedance to the line and a low impedance to the
transformer primary.
the input directly to the 150 ohm primary of Till. Due to the low
source impedance, the loading through Rlll and R112 is neglegible.
When in the microphone position, Tlll provides a voltage gain of
10 (20 dB) due to its turns ratio.
terminated in 47K (R114), an additional voltage gain of 1.5 (3.5 dB)
is achieved over a matched termination.
Clll, Cl12 and the electrostatic shielding in Tlll provide
protection from RP fields.
When in the microphone position, Slll connects
Since the secondary of Tlll is
Page 19
Ulll provides a gain of 7.7 (18 dB) or 34 (31 dB) depending upon
11
the setting of S112.
line input and in the high-gain position for a mic input.
however, be put in the high-gain position for a low-level line (such
as network or remote line).
starting at about 50 KHz in both gain settings.
frequency stability for the op-amp.
Ulll drives the front panel gain control assembly (H&F' part number
0010-0001) through C116.
present on the output of Ulll.
The front panel gain control is a relatively low resistance pot
with a "cue switch".
impedance to the LDRs and summing resistors and provides noise immunity.
When in the cue position, the control assembly drives a summing
S112 is typically in the low-gain position for a
It may,
Cl13 and Cl14 roll off the high frequencies
Cl15 provides high-
Cl16 eliminates any DC offset that may be
The low resistance (1 K) provides a low driving
amplifier (U401) through R411. The wiper of the control assembly
provides audio to the output bus assign circuitry.
Output Bus Assignment Circuitry: Output bus assignment is
accomplished with optic couplers.
couplers LED,
drops. The LDRs are driven by logic circuitry sampling external control
signals,
0010-0002).
circuitry so that manual control can be provided should the logic fail.
A sample of the control signal driving the LDR drives a transistor for
each channel providing an open collector %uting" output.
can drive monitor muting circuitry, warning lights, or be used to start
the selected device (i.e. cart start).
and are driven by a front panel lever switch (H&F part number
the resistance of the LDR (CdS light dependent resistor)
The lever switch operates independently of the logic
When current flows through the
This output
Page 20
12
The program bus assignment circuitry of input one will
be
discussed
in detail.
An external contact closure to ground (or open collector
transistor
pulling to ground) on the CP (Control Program) input of channel one
(TB3-1) will cause the output of the channel one preamp section to be
assigned to the program bus.
When TB3-1 is pulled low, the input to U501 is pulled low
through
D511. D511 provides protection from more positive external control
voltages, allowing the control signal driving the CP input to control
other devices. C511 provides protection from RF. R511 provides a
pull-up so that an open input is interpreted as a logic one. US01 is
an inverting Schmitt trigger. It provides noise tinity, insuring
LDR is driven all the way on or off. U502 is an open source (similar
the
to bipolar emitter follower) CMOS buffer. When U501 provides a logic
1 input, U502 provides enough current on its output to drive U212
(the LDR) through the Program LED in the switch assembly and R211.
The output of U502 can also be driven high (activating the LED and LDR)
by setting the front panel switch in the program position. A channel
can be assigned by either the front panel lever switch or an external
control signal. It is pennissable to assign one preamplifier output
to
both program and audition busses through external control signals and
switch settings.
When the LED of U212 is driven by either an external control
signal or the front panel switch, QSll is turned on through R513 which
causes the collector to pull to ground. This provides an external status
signal indicating that channel one is assigned to program. This output
Page 21
(Ml? on TB3-4) can be used to mute studio monitors, or other control
13
purposes.
Several Muting outputs can be tied together to cause muting
when any of several inputs are assigned to program. Similar provisions
are available for the audition channel.
Once the LED of U212 is activated, indicating assignment of channel
one to program,
the program bus swming amp.
the LDR allows audFo to pass through R212 to U201,
The gain of U201 is set to 8.3 (18 dl3)
by R201 and the corresponding input resistor (such as R212).
C211 and R202 provide a low level signal to the non-inverting input
of U201 to compensate for leakage to the inverting input through the
LDR.
C201 and R201 provide a high frequency roll-off at about 50 KHz.
C202 provides high frequency stability for U201.
Line Driver:
The TVA 142 provides three active balanced 600 ohm
outputs. These outputs are for the program bus, the audition bus, and
the cue bus. The line drivers are the
same,
except for required
differences in gain in the first stmaning amplifier.
U201 and U202 provide the program output. U201 is the program bus
stnmning amplifier. U202 is a unity gain inverting amplifier, providtng
the second half of the balanced line. The output appears similar to the
output obtained from a transformer with the
center
tap grounded, except
that the source impedance seen by an unbalanced load (one line to
ground) here is 300 ohms,
and would be 150 ohms with a transformer
output.
The output can be used to drive either balanced or unbalanced
loads.
With unbalanced loads, the load is driven by one line to ground.
When making test measurements with an unbalanced input audio
voltmeter, the levels will appear the same as would be applied to a
Page 22
balanced terminating load, when bridging from one side to ground.
There is a 6 dB gain since the meter does not terminate the output
(causing no drop across the internal resistor) and a 6 dB loss since
only one side of the line is sampled.
Peak Flashers : Peak flashers are provided on the audition and
program outputs as a means of determining output level.
The peak flashers are based upon the NE555V timer. The program
peak flasher will be discussed in detail.
R602 and R603 provide an adjustable bias signal to the trigger
14
input (pin 2) of U601.
C603 to the trigger input, where it is combined with the bias signal.
When a negative program peak causes the trigger input to U601 to go
below 4 bolts, the output (p&n 3) is driven high, lighting the program
peak flasher LED. When the output (pin 3) of U601 goes high, a
saturated transistor holding pin 7 at ground potential is turned off,
allowing C604 to charge through R606.
After the voltage at the threshold input (pin 6) reaches 8 volts,
the timer is reset. This causes pins 3 and 7 to go low, extinguishing
the LED and discharging C604 until the next program peak. C605 bypasses
the internal reference voltage in U601. The persistence provided by
the timer insures that even the shortest program peaks will be displayed.
The bias level set by R602 can be varied to allow the peak flasher
Program audio is coupled through R604 and
to trigger at various levels.
The TVA 142 combines innovative audio and control circuitry to
provide a high quality audio mtxer.
Page 23
The TVA system is shipped fully checked out and ready for
15
installation.
your operating requirements are different than the factory settings.
Therefore, a complete setup procedure will be discussed.
The following equipment will be necessary for checking out the
TVA system:
TVA
142:
consists of checking the power supply voltages and setting the indicating
level of the program peak flasher.
Check to see that both the positive and negative 18 volt power
It might be necessary to make some adjustments because
DC Voltmeter
AC Voltmeter
Low Distortion Audio Generator
Distortion Analyzer
Adjusting the TVA
142
Mixer Module for proper operation
supplies are operating within one volt of plus and minus 18 volts.
The power supplies can be easily checked at the power supply connector
581.
Use chassis ground as the meter reference.
logic supply. It should be within one volt of plus 12 volts.
output of the generator for -10 dDm and a frequency of 400 Hz. Switch
the MIX 1 lever stitch to P and the MIX 1 gain control fully clockwise.
Check to see that the MIX 1 gain switch S112 is in the line level
position and that the MIX 1 transformer select switch is in the line
Pin 1 is the plus 18 volt and pin 3 is the minus 18 volt connector.
Also check the plus 12 volt
Connect the audio generator to the MIX 1 terminals. Adjust the
Page 24
winding position (both switches to the right). Refer to figure 1 for
the location of the switches. Connect the audio voltmeter or distortion
16
analyzer to a PGM output terminal and the ground next to it.
The output
level should be +8 dBm, or other de&red output level between 0 and
+8 d&n.
dBm
Normally the peak flashers are set to indicate a level 10
over the nominal output level, but they may be adjusted to any
level between 0 and +23 dBm. Adjust the audio generator output to
increase the output level measured at the PGM terminal to +18 dBm.
Adjust the peak flasher level,
Set pot R602 so that the PROGRAM peak
flasher just lights. This also sets the level of the AUDITION peak
flahser.
Return the generator output level to -10 dBm. Check that the other
PGM terminal to ground also has an output of +8 d&n. Check the audition
channel by throwing the MIX 1 lever switch to A.
Connect the voltmeter to one AUD terminal and ground next to it.
The voltmeter should read +8 dBm with the input level still at -10 dBm.
Check that the other PGM terminal to ground also has an output of +8
dBlll.
Turn the MIX 1 gain control fully CounterclocHse to switch it
into the CUE position. Change the voltmeter to a CUE terminal and the
ground next to it.
Read the output level. It should be -10 dBm.
Check the other CUE terminal to ground to insure it also has an output
level of -10 dBm.
Check the other MIX inputs with the audio generator set to produce
-10 dBm at 400 Hz.
Set the gain pots fully clockwise and insure that
the inside gain switches and transformer winding select switches are
in the line positions.
Again, refer to figure 1 for the location of the
switches.
Page 25
Check the inputs one at a time by connecting the generator to the
MIX terminals and reading the output on a voltmeter connected first
to a PCM terminal and ground and then to an AUD terminal and ground.
Turn the gain control counterclockwise into the CUE position and
17
check the output at a CUE terminal and ground.
level for the PCM and AUD channels is +8 dBm. The normal output level
for the CUE channel is +8 dBm with a +8 dBm input.
After all the inputs have been checked in the line configuration,
check them in the mic configuration by reducing the output of the audio
generator to -58 dBm. Change all the gain select switches to mic level
and the transformer winding select switches to mic winding.
that all the MIX channels one by one with the gain control fully clock-
wise produce a level of +8 dBm at one PGM terminal and ground. This
completes the setup and checkout of the TVA 142 Mixer Module.
TVA 132: Adjusting the TVA 132X)utput Module for proper operation
consists of checking the power supply, voltages, setting the gain of
the program and audition amplifiers, calibrating the VU meters, and
The normal output
Check
adjusting the monitor levels to provide equal output no matter which
switch position is selected.
Insure that both the positive and negative power supplies are
operating within one volt of plus and minus 18 volts. The power
supplies can be easily checked at the power supply connector JOl.
Pin 1 is the plus 18 volt and pin 3 is the minus 18 volt connector.
Use chassis ground as a reference.
Connect the audio generator to the Pl terminal and ground. Adjust
the output of the audio generator to +8 dBm at a frequency of 400 Hz.
Page 26
18
Connect an audio voltmeter or distortion analyzer to a PCM terminal and
ground.
measured at the PCM terminal.
The gain control will allow output levels if desired.
calibrate control R146 to make the program W meter read 0 Vu.
other terminal of the PGM output used.
to insure that they all read +8 d&n.
Connect the remaining P inputs one at a time to the audio generator to
insure they all work.
gain control is R219 and the audition W calibrate control is R246.
Connect the audio generator to the Ql terminal and ground.
Adjust the program gain control R119 for a level of +8 dBm
Refer to figure 2 for location of controls.
Set the program VU
Check the
It should read +8 dBm also.
Check the remaining PCM outputs one terminal at a time to a ground
Leave the audio voltmeter connected to one PGM output and a ground.
Repeat the above procedure for the Audition channel. The audition
Set the output to +8 dBm at 400 Hz. Connect the audio voltmeter or
distortion analyzer to a CUE terminal and ground. The voltmeter should
read +8 dBm. The CUE channel gain is not adjustable, but is fixed at unity.
Insure that the other CUE terminal to ground is also reading +8 dBm.
Check the remaining Q inputs one at a time to insure that they work.
Connect the audio generator to the air input.
input, so connect it across both sides.
monitor selectors. Adjust the audio generator for 0 dBm. Set the GLU~UL
frequency to 400 Hz.
Disconnect the plug from 3402, the monitor gain control. Connect a
voltmeter to pins 1 and 3 of 5402.
Disconnect the audio generator from the AIR input and connect it to
the Pl terminal and ground.
Reset the output level of the audio generator
Measure the voltage and record it.
Press the air pushbutton on both
This is a transformer
to +8 dBm.
Select the PGM pushbutton on the Monitor 1 selector. Adjust
Page 27
1.9
R147, program monitor level,
for the same level as measured
in
the
last
step.
Connect the audio generator to the Al terminal and ground.
the ADD pushbutton on the Monitor 1 selector.
Adjust R247, audition
Select
monitor level, for the same level'as measured previously.
Set the audio generator back at 0 dBm. Connect it to the EXT terminals.
Connect across both terminals because this is a transformer input.
Disconnect the voltmeter and replace the plug on 5402. Select the
EXT pushbutton on the monitor 1 selector. A level of +8 dBm should be
measured on the Monitor 1 output terminals, if the module does not have
power amplifiers.
should be checked to insure that each side has the same level.
The other side of the balanced monitor 1 output line
.
In modules with power amplifiers, a speaker should be connected to
the output, and the tone heard.
' This completes alignment of the TVA132 output module. Note that
there is one required adjustment on the 1341PA power amplifiers. That
adjustment is covered in the section of this manual devoted to the 1341PA.
Printed Circuit Board Removal: Xf necessary, the main PC board in
the TVA series modules can be easily removed for service.
connections to the barrier strips.
m
Disconnect all Molex connectors on the
Disconnect all
board. Locate the six flat head screws on the bottom of the chassis which
screw in to standoffs that support the PC board. Remove these six screws.
Slide the PC board toward the front of the chassis and lift it out. To
install the PC board, replace the screws, connectors, and connections
to the barrier strips.
Do not attempt to remove the SIX hex screws on top of the PC board.
This will only add great difficulty in remoang the board, as the standoffs will then be in the way of the barrier strips.
Page 28
* .
Page 29
l -
Page 30
Component
Designation
P
/N
22
TVA 132- PARTS LIST
Description
co1
co2
co3
co4
co5
CO6
co7
CO8
co9
ClO'
Cl01
1535-1261
lame as CO1
1508-3010
same as CO3
same as CO3
same as CO3
1508-1041
same a8 CO7
same as CO7
same as CO7
1508-2200
Capacitor, Tantalum, Mallory TAC126KO25PO4,
12 uF, 25V
Capacitor, Ceramic, Mallory GP-330,
300 pF, 1000 v
Capacitor, Ceramic, Mallory MAG 2501,
.l uF, 25V
Capacitor, Ceramic, Mallory GP-422
22pF, 1000 v
Cl02
Cl03
Cl04
Cl05
Cl06
Cl07
Cl08
Cl09
1529-5600
same as Cl01
1529-1510
1510-1070
same as Cl01
same as Cl05
same as Cl01
same as Cl04
Capacitor, Polystyrene, Mallory SX-456,
56 pF, 500 V.
Capacitor, Polystyrene, Mallory sx-315
150 pF, 500 V
Capacitor,
100 uF, 50 V
Electrolytic, Arco ME-7G-100,
Page 31
Component
Designation
TVA 132 PARTS LIST (Cont)
P Description
/N
23
Cl10
Cl11 same as Cl01
Cl12 same as Cl05
Cl13 same as Cl01
Cl14 same as Cl04
Cl15 same as Cl05
cl16 same as Cl01
Cl17 * same as Cl05
c201 same as Cl01
c202 same as Cl02
C203
C204
C205
same as Cl05
same as Cl01
same as Cl04
same as Cl05
c206
C207
C208
c209
c210
c211
c212
C213
C214
same as Cl01
same as Cl05
same as Cl01
same as Cl04
same as Cl05
same as Cl01
same as Cl05
same as Cl01
same as Cl04
Page 32
TVA 53% hWl!S LIST (cant)
Component
Designation Description
24
C215
C216
C217
c301
C302
c303
c304
c305
C306
c401
c402
c403
c404
same as Cl05
same as Cl01
same as Cl05
same a8 Cl01
same as Cl04
same as Cl05
same as Cl01
same as Cl04
same as Cl05
same as Cl01
same as Cl02
8-e as Cl05
same as Cl01
I
c405
C406
c501
C502
c503
c504
c505
C506
DO1
same as Cl04
same as Cl05
same as Cl01
same as Cl02
same as Cl01
same a8 Cl04
same as Cl05
4800-4002
. same as Cl05
Diode, Silicon, lN4002, 1 A 100 PIV
Page 33
Component
Designation
TVA 132 PARTS LIST (cant)
P/N
Description
25
DO2
JO1
JlOl
5201
5401
5402
5403
J501
5502
5503
MO1
MO2
RlOl
R102
Rlo3
same as DO1
2100-0106
2100-0104
same as JlOl
2100-0110
2100-0103
2100-0105
same as 3401
same as 5402
same as 5403
2900-0001
same as MO1
4711-4103
4711-4473
same as RlO2
Connector,
connector,
Connector,
Connector,
Connector,
VU Meter, Dixson 330 9943, W/lamps
Resistor, Carbon, k watt, 5%, 1OK
Resistor, Carbon, k watt, 5%, 4.7K
6 pin, Molex 09-60-1061
4 pin, Molex 09-60-1041
10 pin, Molex 09-60-1101
3 pin, Molex 09-60-1031
5 pin, Molex 09-60-1051
R104
R105
R106
R107
R108
R109
RllO
Rlll
R112
same as RlOl
same as R102
same as RlO2
same as RlOl
same as RlO2
same as RlO2
same as RlOl
same as RlO2
same as R102
Page 34
TVA
132 PARTS LIST (cant)
Component
Designation Description
26
R113
same as RlOl
R114 same as RlO2
R115 same as R102
R116 same as RlOl
R117 same as R102
R118 same as R102
R119
R120
R121
R131
R132
R133
R134
4766-2503
4711-4822
same as R102
same as RlOl
same as RlOl
same as RlOl
4711-4301 Resistor, Carbon, $g watt, 5%, 300 ohm
Trim Pot, CTS X201R503B, 5OK
Resistor, Carbon, k watt, 5%, 8.2K
R135
R136
R137
R138
R139
Rl40
R141
R142
R143
same as R134
same as RlOl
same as R102 .
same as RlOl
same as R134
same as R134
same as RlOl
same as R102
same as RlOl
Page 35
TVA 132 PARTS LIST (cant)
Component
Designation
R144 same as R134
R145 same as R134
R146 4766-2103 Trim Pot, CTS XZOlR103B, 1OK
PN Description
/
27
R147
R201
R202
R203
R204
R205
R206
R207
R208
R209
R210
R211
R212
same as R146
same as RlOl
same as R102
same as R102
same as RlOl
same as R102
same as R102
same as RlOl
same as 13202
same as R102
same as RlOl
same as R102
same as RlO2
R218
R214
R215
R216
R217
R218
same as RlOl
same as R102
same as R102
same as RlOl
same as R102
same as R102
Page 36
Component
Designation
TVA 132' PAR!CS LIST (cant)
m!
Description
28
.
R219
X220
R231
R232
R233
R234
R235
R236
It237
R238
x239
R240
R241
same as Rl19
same as R120
same as 61101
same as R102
same as RlOl
satme as RI.34
same as R134
88me as
RlOl
same as RlO2
same as RlOl
same as R134
sane as R134
same as RlOl
R242
R243
R244
It245
It246
R247
R301
R302
R303
same as R102
same as RlOl
same as R134
same as R134
same as R146
same as RI.46
same as RlOl
same as RlOl
same as RlOl
Page 37
Component
Designation
TVA 132.PARTS LIST (contl
P/N
Description
29
R304
R305
R306
R307
R308
R309
R310
R311
R312
same as RlOl
same as RlOl
same as RlOl
same .as RlOl
same as R102
same as R134
same as RlOl
same as RlOl
same as R102
R313 same as RI.34
R314 same as RI.46
R401
R402
0010-0007 Pot Assembly, 10K
same as RlOl
R403
R404
R405
R406
R407
R408
R409
R501
R502
same as RI.02
4711-4273 Resistor, Carbon, k watt, 5%, 27K
same as R134
same as RlOl
same as R102
same as RlOl
same as R134
same as R401
same as RlOl
Page 38
Component
Designation
TVA 132 PARTS LIST (cant)
P/N
Description
30
R503
R504
R505
R506
lx507
R508
R509
s401
s501
T401
T501
TBl
TB2
same as R102
same as R404
same as R134
same as RlOl
same as R102
same as RlOl
same as RI.34
0010-0006
same as S401
5605-0001
same as T401
2100-0035
same as TBl
Selector Switch Assembly
Transformer, UTC PC-O-26, 1OK:lOK
Terminal Strip, Magnum, 2061~150060AB
TB3
TB4
UlOl
U102
u103
u104
u105
U106
u107
2100-0036
sameas TB3
3130-5534
same as UlOl
same as UlOl
s8me as UlOl
same as UlOl
same as UlOl
same as UlOl
Terminal Strip, Magnum, 20510150060AB
Operational Amplifier, NE5534
Page 39
TVA 132 PARTS LIST (cone)
Component
Designation.
u201 same as UlOl
u202 same as UlOl
U203 same as UlOl
U204 same as UlOl
P/N
31
Description
U205
U206
U207
u301
u302
u401
U402
u501
U502
same as UlOl
same as UlOl
same as UlOl
same as UlOl
same as UlOl
same as UlOl
same as UlOl
same as UlOl
same as UlOl
Page 40
TVA 132 PARTS LIST
(non designated parts)
P Description
A?
32
1400-0506
1400-0507
1400-0508
1400-0509 Chassis box
2100-0005 IC Socket, 8 pin
2100-0019 Buss BKP, Single D fuse holder
2410-0002
2803-0006
2807-8349 Ii& Smith 8349 1-k" spacer
3130-7818
3130-7918 Regulator, 7918/I&f 32OT-18, -18 V
4104-0005
5633-8613 Stancor P8613 36 V Transformer
Chassis back
Rack Panel
Chassis front
Rogan RB6725K7M k Blk knob
Mallory TCBS6N 3/8" spacer
Regulator, 7818/LM34OT-18, +18 V
BUSS AGC %, k Amp
Fuse
6028-7239 Belden 17239B Line cord
6036-0939 H.H. Smith #939 Strain relief
Page 41
0010-0006 SWITCH ASSEMBLY
33
pm
1400-0501
1706-1271
2100-0130
2100-0158
5157-0005
0010-0007 POT ASSEMBLY
p/N
2100-0123 Connector, Molex 09-50-7031, 3 pin
2100-0156 Pin, Molex 08-50-0108
Description
Switch bracket
H&F 1271 SW P.C. Board
Connector, Molex 09-50-7101, lo-pin
Pin, Molex 08-50-0108
Switch, Schadow 5KP, 17.5 FE/BLK/U/GR
5 station DPDT
Description
4757-0103 Pot, Boumes 82AlA-B28-D15, 1OK
Page 42
Component
Designation
TVA 142 PARTS LIST
P/N
34
Description
CO1
co2 same as CO1
co3
co4
co5
CO6
co7 same as CO1
CO8 same as CO1
co9
Cl0
Cl11
Cl12 same as Cl11
1535-1261 Capacitor, Tantalum, Mallory
same as CO1
same as CO1
same as CO1
same as CO1
same as CO1
same as CO1
1508-3010 Capacitor, Ceramic, Mallory GP-330,
TACl26KO25PU4, 12 uF, 25 V
3oopl?, 1 Kv
Cl13
Cl14 1529-5600 Capacitor, Polystyrene, Mallor SX-456,
Cl15 same as Cl13
cl16
Cl21
Cl22 same as Cl11
Cl23
Cl24
1529-2000 Capacitor, Polystyrene, Mallory sx-420,
20pF, 500 v
56 pF, 600 V
1510-5060 Capacitor, Electrolytic, Arco ME4GO50,
50 uF', 25 V
same as Cl11
sane as Cl13
same as Cl14
Page 43
Component
Designktiixb
35
TVA 142 PARTS LIST (cant)
Description
Cl25
Cl26
Cl31
Cl32
Cl33
Cl34
Cl35
Cl36
Cl41
Cl42
Cl43
Cl44
Cl45
same as Cl13
same as Cl16
same as Cl11
same as Cl11
same as Cl13
same as Cl14
same as Cl13
same as Cl16
same as Cl11
same as Cl11
same as Cl13
same as Cl14
same as Cl13
Cl46
Cl51
Cl52
Cl53
Cl54
Cl55
Cl56
Cl61
Cl62
same as Cl16
same as Cl11
same as Cl11
same as Cl13
same as Cl14
same as Cl13
same as Cl16
same as Cl11
same as Cl11
Page 44
TVA
1'42 PARTS LIST (cant)
36
Component
Designation
Cl63
Cl64
Cl65
Cl66
c201
c202
c203
C204
c211
F
g/N-
same a8 Cl13
same as Cl14
aame as Cl13
same as Cl16
1529-7500
1508-2200
1529-1510
same a8 C202
1529-3000
Description
Capacitor, Polystyrene, Mallory SX-475,
7SpF, 600 V
Capacitor, Ceramic, Mallory GP-422,
22pF, 1 XV
Capacitor, Polystyrene, Mallory SX-315
150
pF,
630 V
Capacitor, Polystyrene, Mallory SX-430,
30 pF, 600 v
c221
C231
C241
c251
c261
c301
c302
c303
c304
c311
C321
same as C211
same as C211
same as C211
same as C211
same as C211
same as C201
same as 0202
same as C203
same as C204
same as C211
same as C211
Page 45
Component
Designatibn
37
TVA 142 PAR& LIST (cant)
P/N Description
c331
c341
c351
C361
c401
C402
c403
c404
c511
C512
C521
C522
same as C211
same as C211
same as C211
same as C211
same as C203
same as C202
same as C203
same as C204
1508-1031 Capacitor, Ceramic, Mallory TA-110,
.Ol UF, 100 v
same as C511
same as C511
same as C511
c531
C532
c541
C542
c551
C552
C561
C562
c601
cd02
same as C511
same as C511
same as C511
same as C511
same as C511
same as C511
same as C511
same as C511
same as CO1
1508-2240 Capacitor, Ceramic, Mallory MAG-25022,
.22 uF, 25 V
Page 46
Compongnt
Des‘iknation
38
TVA 142 PARTS LIST (cant)
Description
D501
D511
D512
D521 same as D511
D522 same as D511
D531
D532
D541
D542
D551
D552
D561
D562
0010-0005 Peak Flasher Display Assembly
4800-4002 Diode, Silicon, lN4002
same as D511
same as D511
same as D511
same as D511
same as D511
same as D511
same as D511
same as D511
same as D511
JO1
Jlll
5121
3131
5141
J151
5161
5511
5521
2100-0106
2100-0104
same as Jlll
same as Jlll
same as Jlll
same as Jlll
same as Jlll
2100-0105
same as 5511
Connector, 6=pin, Molex 09-60-1061
Connector, 4=pin, Molex 09-60-1041
Connector,
T-pin, Molex 09-60-1051
Page 47
Component
Designation
39
TVA 142 PARTS LIST (cant)
Description
5531
5541 same as 5511
5551 same as J511
5561 same as 5511
5601 2100-0103
Q511
Q512
Q521 same as Q511
4522 same as Q511
Q531
4532 same as 0511
Q541 same as QSll
4542
same as 3511
4849-2222
same as QSll
same as Q511
same as Q511
Connector, 3=pin, kfolex 09-60-1031
Transistor, 2N2222
Q551
0552 same as QSll
Q561
4562
Rlll
R112
R113
R114
R115
same as Q511
same as 0511
same as 0511
4711-4472
same as Rlll
4711-4152 Resistor, 3; watt, 5%, 1.5 K
4711-4473
same as Rlll
Resistor, k watt, 5%, 4.7 K
Resistor, k watt, 5%, 47 K
Page 48
TVA 142 P&S LIST (cant)
40
Component
Designation
R116
R117
Rl18
R121
R122
RI.23
R124
R125
R126
R127
R128
Hw
p/N
4711-4164 Resistor, !g watt, 5%, 160 K
same as Rl14
0010-0001 Control Assembly, 1 K
same as Rlll
same as R112
same as R113
same as R114
same as R112
same as R116
same as Rll4
same as R118
Description
R131
R132
R133
R134
R135
R136
R137
R138
R141
R142
R143
same as Rlll
same as Rlll
same as R113
same as 914
same as Rlll
same as Rll6
same as R114
same as R118
same as Rlll
same as Rlll
same as R113
Page 49
Component
Designation
41
TVA 142'PAkS LIST (cant)
Description
R144
Rl45
R146
R147
R148
Rl51
R152
Rl.53
Rls4
R155
R156
Rl57
R158
same as R114
same as Rlll
same as RI.16
same as Rl14
sake as R118
same as Rlll
same as Rlll
same as R113
same as R114
same as Rlll
same as Rl16
same as RI.14
same as Rl18
R161
RI.62
RI.63
R164
R165
R166
R167
R168
R201
same as Rlll
same as Rlll
same as R113
same as R114
same as Rlll
same as R116
same as Rl14
same as R118
4711-4393
Resistor, $g watt, 5%, 39 K
Page 50
Component
Desimiation
TVA 142 PARTS LIST (cant)
P Description
A?
42
R202
R203 4711-4103
R204 same as R203
R205 same as Rlll
R206 4711-4301
R207 same as R206
R211 4711-4561
R212
R221
R222
R231
R232
R241
same as Rlll
same as Rlll
same as k211
same as Rlll
same as R211
same as Rlll
same as R211
Resistor, * watt, 5%, 10 K
Resistor, k watt, 5%, 300 ohm
Resistor, k watt, 5%, 560 ohm
R242
R251
R252
R261
R262
R301
R302
R303
R304
same as RI.11
same as R211
same as Rlll
same as R211
same as Rlll
same as R201
same as Rlll
same as R203
same as RZO3
Page 51
Camponent
Designat'ion
R305
same
TVA
P/N
as It203
43
142 PARTS LIST (cow)
Description
R306
R307
R311
R312
R321
R322
R331
R332
R341
R342
R351
R352
R361
same as R206
same as R206
same as R211
same as Rlll
same as R211
same as Rlll
same as R211
same as Rlll
same as R211
same as Rlll
same as R211
same as Rlll
same
as R211
R362
R401
R402
R403
R404
R405
R406
R407
same as Rlll
same as R203
same as Rlll
same as R203
same as
R203
same as Rlll
same as R206
same as R206
Page 52
Component
Deip'ignation
TVA 142 PARTS LIST (cant)
P/N
Description
44
R511
R512
R513
R514
R521
R522
R523
R524
R531
R532
R533
R534
R541
same as R203
same as R203
4711-4222
same as R513
same as R206
same as R206
same as R513
same as R513
same as R206
same as R206
same as R513
same as R513
same as RZO6
Resistor, k watt, 5%, 2.2 R
R542
R543
R544
R551
R552
R553
R554
R561
Rs62
mmne as R206
same as R513
same as R513
same as R203
same as R203
same a8 R513
same as R513
same as R203
same as R203
w
Page 53
Cunponent
Designation
TVA 142 PARTS LIST (cant)
P/N
Description
45
R563
R564
R601
R602
R603
R604
R605
R606
R607
R608
R609
R610
R611
same as R513
same as R513
4711-4100 Resistor, k watt, 5%, 10 ohm
4766-2502 Trim Pot, CTS 201R50-2B, 5K
4711-4332 Resistor, k watt, 5%, 3.3 K
same as R203
same as R203
4711-4824
same as 'R206
same as R203
same as R203
same a8 R606
same as R206
Resistor, 5 watt, 5%, 820 K
Sill
s112
s121
s122
s131
S132
s141
S142
s151
S152
5134-0003
5134-0002
same as Slll
same as S112
same a8 Slll
same as S112
8-e as Slll
same as S112
game as Slll
same as 5112
Dip Switch, AMP 435470-5, DPDT
Dip Switch, AMP 435665-2, SPST
Page 54
Cmkpon~r)t
Designation
46
TVA 142 FARTS LIST (cone)
Description
S161
S162
s511
S521
s531
s541
s551
S561
Till
T121
T131
T141
T151
same as
same as
Sill
S112
0010-0002
same
as 5511
same
as S511
same as S511
same
as S511
888s as
5605-0003
same
same as Tlll
same as
same
8511
as
Till
Tlll
as Till
H&F Switch
Assembly
Transformer, Sescm custom, 150/15K:15K
T161
TBl
TB2
TB3
TB4
Ulll
In21
u131
u141
same as
Till
2100-0035
same
as TBl
2100-0036
sameas TB3
3130-5534
same as
same
same
Ulll
as Ulll
as Ulll
Terminal Strip, Magnum, 20610150060AB
Terminal Strip, Magnum, 20510150060AB
Operational Amplifier, NE5534
Page 55
TVA 142 PARTS LIST (cant)
47
Component
Designation
U151
U161
u201
u202
u212
u222
U232
U242
U252
U262
u301
H&F
P/N
same as Ulll
same as Ulll
same as Ulll
same as Ulll
3717-0001
same
as U212
same as U212
same as U?12
same as U212
same as U212
same as Ulll
Description
Optical Isolator, Vactec VTL 5C2
U302
U312
U322
U332
U342
U352
U362
U401
u402
u501
U502
same as Ulll
same as U212
same
as U212
same as U212
same as U212
same as U212
same as U212
sqme as Ulll
same as Ulll
3130-7914
3130-7907
Hex Schmidt Trigger, 74C914
Hex Buffer, 74C907
Page 56
Component
Desimiation
TVA 142 PARTS LIST (cow)
p/N
Description
48
u503
u504
u505 same as US02
U506
U601
U602
same as 0502
88me as U501
same as U502
3130-0555 Timer, NE555V
same as U601
Page 57
TVA 142 PARTS LIST
(Non-designated Patts)
49
P
A!
1400-0110
1400-0503
1400-0504
1400-0505
1400-0509
2100-0005
2100-0006
2100-0019
2100-0158
2100-0226
2180-2214
2410-0001
Description
Chassis Top
Rack Panel
Chassis Front
Chassis Rear
Chassis Box
Dip Socket, 8-pin
Dip Socket, 140pin
Fuse holder, Buss HKP
Contact, Molex 08-50-0108
Connector, Molex 09-50-3061, 6-pin locking
Crimp connector, Waldom CEO2214
Knob, Rogan RB6735K7M k Blk
2803-0006
2807-8349
3130-7812
3130-7818
3130-7918
5104-0005
5633-8613
6028-7239
6036-0939
Spacer, Mallory TCBS 6N, 3/8"
Spacer, H.H. Smith 8349, 1-#'I
Regulator, 7812, +12 V
Regulator, 7818, +18 V
Regulator, 7918, -18 V
Fuse, Buss AGC 4, 4 amp
Transformer, Stancor P8613, 36 V
Line cord, Belden 17239B
Strain Relief, H.H. Smith 939
Page 58
0010-0001 CONTROL' ASSEMBLY, 1 K
H&F
p/N
Description
50
2100-0124
2100-0158
4757-0102
0010-0002
P Description
/N
2100-0125 Connector,
2100-0158
Connector, Molex 09-50-7014, &pin
Pin,
Molex 08-50-0108
Pot, Bournes
SWITCH
ASSEMBLY
86AZAB28BlOR51, 1H
Molex 09-50-7051,
Pin, Molex 08-50-0108
3714-5053 LED, Monsanto MV5053,
3714-5153
5142-0001
LED, Monsanto MV5153, Orange
Switch, Capitol HLB
S-pin
Red
0010-0005 PEAK FLASHER DISPLAY ASSMBLY
P Description
A!
2100-0123
2100-0158
3714-5053
3714-5153
Connector, Molex 09-50-7031, 3-pin polarized
Contacts,
LED, Monsanto MV5053, Red
LED, Monsanto
Rolex 08-50-0108
MV5153,
Orange
Page 59
Universal Power Supply
51
Description:
The h&F Universal power supply is a single
printed circuit board that performs the following functions:
rectification, filtering, and regulation.
'It can be loaded
in various configurations to provide up to three supply voltages,
two positive and one negative.
Thru drilling out plated holes,
the supplies can run on two separate transformers.
Part Numbers: Due to the variety of applications of
this supply,
several part numbers exist.
are not included in the assembly,
but are added when the assembly
Note that the regulators
is finally placed in a finished product.
Part Number
0010-0003
0010-0004
Description
Bipolar supply plus separate positive supply.
Bipolar supply
Theory of Operation:
Consult schematic drawing E-057.
Each supply can be run on a separate transformer winding, if
desired.
This is accomplished by drilling out the appropriate
plated through holes.
In the bipolar supply,
of the circuitry from transient line voltages.
(Dll -
Dl4)
provide bipolar DC (referenced to common #l) from the
center tapped transformer secondary.
filtering,
while Cl2 and Cl5 provide a high frequency low impedance
source for the regulators, insuring stability.
regulate the filtered DC down to the desired voltage.
HOVll and MOV12 protect the remainder
The diodes
Cl1 and Cl4 provide
Ull and U12
D15 and
Page 60
52
D17 protect the regulators
from having a higher output voltage
than input voltage (possible if input capacitors accidentally
shorted).
and improve transient regulation.
Cl3 and Cl5 insure stable operation of the regulators,
D16 and D18 protect the
regulators from opposite polarity signals that may come from the
load.
Such may occur if the positive and negative outputs are
shorted together.
The remaining supply circuitry operates.in the same
manner.
Note that ifonly one transformer winding is used,
HOV21 and PZOV22 may be deleted.
Page 61
Parts List
53
C&ponent
Designation
C12,ClS,C22
Cll,C14,C21
C13,C16,C23
P2
Pl
H&F
P/N
Description
OOlO-wu3 hbassembly, Bipolar supply plus positive supply
0010-0004 Subassembly, Bipolar supply
1508-1042 Mallory MAGSOOl, Capacitor, Ceramic, 0.1
uF,
5OV
1510-1180. Mallory TCGllZUOSNZC, Capacitor, Electrolytic,
1100 UF, 50 v.
1535-1261 Mallory TAC126KOZSPO4, Capacitor, Tantalum,
12 UF, 25%
1706-1241 H&F 1241PS Printed Circuit Board
2100-0002
Amp 50865-1, Component Pin
210000126* Molex 09-50-7061, 6 pin connector
2100-0158 Molex 080SO-0108,.connector pin
2100-0206 Molex 09-65-1061, 6 pin locking connector
MOVll-MOV22
Dll - 022
4741-0039 GE V39zA1, Metal Oxide Varistor, 3C, V
4800-4002 lN4002, diode, lA, 100 PIV
Page 62
54
The 134lPA is a ten watt monitor amplifier. Power for the amplifier
is provided by a 13SlPS power supply. These two printed circuit modules
are designed to be used as part of an audio system, such as the W TVA132
mixing system output module.
The 134lPA has all components mounted on a single printed circuit
board, except for the output transistors and an optional gain control.
Provision is made for an input transformer, should a b&lanced input be
required. A reed
Theory of
audio
power driver integrated circuit, two driver transistors, two output
transistors, and associated
.
Protective circuitry is included to protect the amplifier from output
relay Fs incorporated
Operathn:
The H&F 134lPA power amplifier utilizes an
canponents
to mute the amplifier.
to drive ten watts into eight ohms.
faults. A ground switched relay, when operated, mutes the amplifier
audio.
The amplifier is capable of driving four or sixteen ohm loads at
slightly reduced power.
Typical power into eight ohms may approach 20
watts, howeve:, continuous tone operation at more than ten watts should
be avoided to prevent overheating of the output transistors or power
transformer.
Unbalanced audio is presented to the amplifier input at 51-2. Cl1
blocks any DC which may be present.
Rl, R.2, and R3 form a voltage divider
which attenuates the input level 11 dB.
Cl blocks UC at the integrated circuit input.
present due to bias current on the input.
The input impedance is 46 K.
Such DC could be
Page 63
When the mute relay (Kl) is operated, R2 is shorted, shunting the
audio to ground. This reduces the input impedance slightly, to 33K.
R5 and R4 set the gain of the amplifier to 19.6 (25.8 dB). Overall
power amplifier gain is 25.8 dB less 11 dB from the input divider,
resulting in 14;8 dB. C2 and R4 increasethe negative feedback at very
low frequencies and DC. This protides areduction in gain for DC,
lowering the output DC offset voltage. The low frequency cutoff as
determined by Cl, R3, C2, and R4 is below 5 Hz.
CS sets the gain-bandwidth product and a high frequency pole at 50
KHZ. C3 is a ripple capacitor. Its value must equal C5.
R6, R9, Rll, R13, and R14 set the dual-slope output protection limits.
55
C6 and C7 are compensation capacitors for the output protection circuitry.
RlO and Rl6 act as "base pull-dawn" resistors for the output device-s.
These resistors tend to turn the transistors off. The driver transistors,
Ql and 42, provide current to the pull-down resistors and the bases of the
output devices to force them into conduction, when required.
R3 and R7 set the idle current on the output devices. R7 is adjusted
for the lowest possible output current without cross-over distortion.
C4 bypasses the bias applied to the output transistors, reducing high
frequency distortion and improving transient response.
Ul is a low distortion, low noise audio power driver. It includes
circuitry for dual slope protection of the output transistors.
The pins of Ul are described as follows:
1 - +Input
Audio Input
2-
-Input Feedback Input
3 - Compensation
4 - Ripple Filter
Sets dominant pole in transfer function
Improves negative supply rejection
Page 64
5
- sink Output
6
- Bias
7
- Bias
56
Drives output devices, part of bias
circuit
0 - Source Output
Drives output devices, part of bias
cfrcuit
9 - Output Sense
Biases IC, part of protection circuit
10 - +Current Limit
11 - +SOA Diode
12 - -SOA Diode
Safe Operating
Area
Protection
Safe Operating Area Protection
13 - -Current Limit
14 - Shut-down
15 - IF+
16 - V-
Ground through 39K for shut-down
Posittve Supply, +30 V max
Negative Supply, -30 V max
Dl and D2 protect the output devices in the event the protection
circuitry is activated while driving an inductive load.
Ql is an NPN driver transistor,
driving 43, the PNP positive output
transistor.
42 is a PNP driver transistor,
driving Q4, the NPN negative output
transistor.
Kl7 and C8 provide output high frequency compensation. .
Ll is 20 turns of #20 wire on a 10 ohm 2 watt carbon resistor. This
isolates capacitive loads from the amplifier.
Kl is a 12 volt relay used to mute the audio. The mute relay draws
15 mA, and the voltage on the control input when open circuit is 24 VDC,
R18 provides the additional 12 volt drop required to operate Kl from a 24
volt supply. 03 protects the relay from more positive voltages handled
by the same ground switch. D4 shunts the reverse current when Kl is
Page 65
released. D4 reduces switching transients and protects the external
switchjng circuitry.
The output of the 1341PA is available on 52. The power supply (the
H&F 1351PS) connects to 53.
C9 and Cl0 provide power supply bypassing.
Bias Adlustment: R7 on the 1341PA adjusts the bias on the output
transistors to minimize cross-over distortion and idle current.
57
Adjust R7 fully counterclockwise,
minimum.
Connect an audio generator to the amplifier input. Adjust the audio
generator for 20 KHz at 4 mV.
Connect an oscilloscope to the amplifier output. The audio should
be present with some cross-over distortion. Adjust R7 slowly clockwise
until the cross-over distortion just disappears.
point, or the transistors will draw excessive current and heat excessively.
Special Applications: The 1341PA amplifier is capable of delivering
in excess of 20 watts into a four or eight ohm load, with adequate heat
sinking and power supplies. It may be used in any application where a high
quality monitor amplifier with muting is required.
Certain options are readily available, including: transformer
setting the idle current at a
Do not go past this
balanced input, remote gain control, and thermal shut-down.
Balanced Input:
such as Sescom MI-32 or H&E' 5605-0003. The large pad on the PC should be
drilled to accommodate the mounting of the transformer used. The input
winding connects to pins 2 and 3 of Jl.
the pads at the ends of Rl and R2. The electrostatic shield connects
to pin 1 of Jl. Jl pin 1 is a square pad.
Replace Cl1 with a 15K : 15K audio transformer,
The output winding connects to
Page 66
Remote Gain Control: X2 is replaced with a 15K audio taper pot.
58
A Molex 2 position wafer (H6rF
in place of R2. A 2 position Molex plug (H&F 2100-0122, Molex 09-50-7021)
is connected to the pot leads.
on the PC) connects to ground and should go to the shield on the cable
going to the CCW lead on the pot. Pin 2 goes to the center conductor
on the cable going to the pot,
pot. A 1OK pot may be used if desired, however, the amplifier gain
(maximum) will be reduced by 2.4 dB.
Thermal Shut-down: Ul pin
resistor to shut down the amplifier. If an appropriate thermistor or
thermal switch is mounted on the output transistor heat sink, the
amplifier will shut down should excessive temperatures occur.
2100-0102,
Pin 1 of the connector (the square pad
all connects to the wiper contact on the
14
may be grounded through a 39K
Molex
09-60-1021)
is installed
Page 67
Component
Designation
PlN
59
Parts List
Description
C6, C7
c4, cs
c9, Cl0
c3, c5
Cl
Cl1
C2
0010-1341
1341PA Power Amplifier Assembly
0010-0008 Inductor Assembly, 25 turns %20 wire on
10 ohm, 2W, lO%, Carbon Resistor
1400-0103
1508-1020
1508-1043
1508-3300
1510-1050
1510-1061
Heat Sink
Mallory GP210, Capacitor, Ceramic, .OOl uF
Mallory TAOlO, Capacitor, Ceramic, 0.1 uF
Mallory cNO433, Capacitor, Ceramic, 33 pF
Mallory VTTIASO, Capaci.tor, Electrolytic,
1
uF,
25 V
Mallory TT25X10, Capacitor, Electrolytic,
10 uF, 25 V
1510-1062
Mallory VTTlOB25, Capacitor, Electrolytic,
10 uF, 25 V
2100-0008 DIP socket, 16 pin, gold, solder
Jl, X2
53
Ul
Kl
R17
2100-0042
2100-0043
2100-0103
2100-0104
AMP 1-331677-7, Spring Socket
AMP l-331677-4, Spring Socket
Molex 09-60-1031, 3 pin polarizing wafer
Molex 09-60-1041, 4 pin polarizing wafer
2100-0154 Molex 08-50-0114, pins for 2100-0293
2100-0293 Molex 10-17-2032, TO-220 Socket
2800-0001 Smith 6291, TO-220 Insulator
3130-0391 LM391-60, Power Amplifier Driver
4500-0112 EAC lA12A, Reed Relay, 12 VDC, SPST, N)
4711-1279 Resistor, Carbon, 2.7 ohm, lW, 10%
Page 68
Component
Designation
p/N
60
Parts List (cant)
Description
RlO, R16
Rll, Rl3, R18 4711-4102
a, R5
R2
R6 4711-4243
Rl 4711-4333
R8 4711-4392
R4 4711-4512
R9, RI.5
R7 4766-2103
Rl2,Rl4 4790-5278
Dl - D4 4800-4002
Ql
4711-4101
4711-410s
4711-4153
4711-4913
4846-0344
Reststor, Carbon, 100 ohm, &I, 5%
Resistor, Carbon,'1 K, &?, 5%
Resistor, Carbon, 100 K, @I, 5%
Resistor, Carbon, 15 K, w, 5%
Resistor, Carbon, 24 K, w, 5%
Resistor, Carbon, 33 K, w, 5%
Resistor, Carbon, 3.9 K, H, 5%
Resistor, Carbon, 5.1 K, w, 5%
Resistor, Carbon, 91 K, %W, 5%
CTS X20lRlO3B, 10 K Trimpot
IBC PW-5, ResUtor, WW, 0.27 ohms, 5W, 10%
lN4002, Diode, lA, 100 PIV
NSC BD344
42
43
44
4846-0345
4846-0346
4846-0347
.
NSC BD345
NSC BD346
NSC BD347
Page 69
1351PS POWER SUPPLY
The R&P 1351PS power supply is a bipolar unregulated supply designed
to power the 1341PA power amplifier.
Power transformer T51 is mounted on the chassis near the printed
61
circuit assembly.
P51. The secondary center-tap is connected to the center pin of P51.
P51 plugs in to ,351 on the 1351PS board.
RV51 and RV52 are transient voltage suppressors to protect the 1341
power amplifier.
D51 is a full wave bridge rectifier. The positive lead provides
positive DC. C51 and C52 filter the positive DC.
frequency bypassing. D51's negative lead and C54, C55, and C56 form the
negative supply.
P52 carries the bipolar power to 53 on the 1341PA power amplifier
printed circuit assembly.
The secondary leads are terminated in a 3 pin plug,
C53 provides high
Page 70
Parts List
62
Component
Designation
C53, C56
C51, C52
c54, c55
551
P51, P52
RV51, RV52
DBSL
* ,
p/N
1508-1043
1510-3080
1706-1351
2100-0103
2100-0123
4741-0033
4810-0100 Mallory FWLDlOO, Diode Bridge, 6A, 100 PIV
6039-0088
Description
Mallory TAOLO, Capacitor, Ceramic, 0.1
UF, 100 v .
Mallory TC50300A, Capacitor, Electrolytic,
3000 uF, 50-V
Printed Circuit Board
Molex 09-60-1031, 3 pin polarized wafer
Molex 09-50-7031, 3 pin socket
GE V33ZA5, Varj.stor
Weckesser G-88, Cable Tie, 7 inch
Page 71
n03n-1320
SERVICE BULLETIN
TVA-142 #01
TVA-131 #fOl
TVA.
132
SERIAL NUMBERS AFFECTED: All
lWi9
3/m
#Ol
PURPOSE:
Availability of Spare Parts Kits
and 24-Hour mergency Parts Service
Spare Parts Kits are now available for the TVA-142 and
TVA-131. Basic Spare Parts Kits include semiconductor
and electromechanical devices such as switches and pots.
Complete Spare Parts Kits are available for users who
require a replacement part for all components due to
limited parts availability locally. Prices are
shown
for
each kit with a complete description on the following
pages.
*********************************************************
Remember, Hallikainen & Friends maintains a 24-Hour
tiergency Parts Service at
(805)
541~0200. After hours,
ask specifically for "Emergency Parts Service%
Out-of-Warranty parts are subject to a minimum charge.
Page 72
BASIC SPARE PARTS KIT
.
I
TVA-131
P/N
0040-1310
WY:
1
1
1
2
2
2
2
2
P/N: H&F
0040-0020
0010-0006
0010-000~
3130-5534
X30-7818
3130-7918
4800-4002
5104-0005
Description:
Meter Lamp Replacement Kit
Selector
Pot Assembly, 1OK
Operational Amplifier,
Regulator,
Regulator,
Silicon Diode, lA, 100 P.I.V.
Switch Assembly
NE5534
41811, 7818/~~340~-18
-18v, 7918/LE1320%18
Fuse, AGC l/2, 1/2A
TOTAL:
$94.00
Page 73
COMPLETE SPARE PARTS KIT
TVA-131
P/N 0040-1311
Qty: P/N: H&F
1
2
2
2
2
2
2
2
2
1
1
po40-1310
1508-1041
1508-2200
1508-3010
1510~1070
1529~1510
152995600
1535-1261
zioo-0005
2100-0103
uoo-0104
Description:
* Basic
Cap,,
Cap.,
Cap*,
Cap*,
Cap.,
Cap,,
Spare Parts Kit
Ceramic, .luF, 25V
Ceramic, 22pF, lKV
Ceramic, 300 pF, 1KV
Electrolytic, lOOuF, 5OV
Polystyrene, 150pF, SOOV
Polystyrene, 56pF, SOOV
Cap.', Tantalum, 12uF, 25V
I.C. Socket, 8 pin
Connector, 3 pin
Connector, 4 pin
1
1
1
1
1
1
10
1
2
1
2100-0106
2100-0110
zioo-0123
uoo-0124
2100-0126
2100-0131
2100-0158
2410-0002
4711-4103
2100-0019
Connector, 6 pin
Connector, 10 pin
Connector, 3 pin
Connector, 4 pin
Connector, 6 pin
Connector, 10 pin
Connector Pin
Knob
Resistor, 1OK
Fuse Holder
Page 74
COMPLETE SPARE PARTS KIT
TVA-131....Continued
P/N 0040-1311
Qty:
2
with
H&F P/N:
4711-4273
4711-4301
4711-4473
Description:
Resistor, 27K
Resistor, 300
Resistor,
4711-4822 Resistor,
4766-2103
4766-2503
5605-0003
X33-8613
Trim Pot, 1OK
Trim Pot, 5OK
Transformer, 150/15K:15K
Tram f ormer, Power,
TOTAL:
2900-0001
Meter, V.U.
4.7K
8.2~
36V
8165.00
P/N 00404312
TOTAL:
w55.00
Page 75
Due to changes in model numbers, there is some change
in part numbering for spare parts kits.
The complete TVA series spare parts kit numbering
system is shown below.
TVA-131
Output Module with balanced
BASIC SPARE PARTS KIT
COMPLETE SPARE PARTS KIT
COMPLETE SPARE PARTS KIT WITH VU NETER 0040-1312
TVA-132 Option 0 (standard)
P
j.,..
.a ,i
Output Xodule with speaker level monitor outputs.
BASIC SPARE PARTS KIT
COMPLETE SPARE PARTS KIT
COMPLETE SPARE PARTS KI
TVA-132 Option 1
Output Module with balanced 600 ohm monitor outputs.
BASIC SPARE PARTS' KIT
COXPLETE SPARE PARTS KIT
COMPLETE SPARE PARTS KIT WITH VU METZR 00404312
TVA-142
600 ohm monitor outputs.
0040-1310
00404311
0040-1320
0040-1321
'? WITH VU M3TER 00404322
0040-1310
0040-1311
XIC/LINZ Mixer Module.
BASIC SPARE PARTS KIT
COMPLETE SPARE PARTS KIT
0040-1420
0040-1421
Page 76
BASIC SPARE PARTS KIT
TVA-132
P/N: H&F
6040~1310
3130-0391
4500-0112
4846-0344
4846-0345
4846-0346
4846-0347
- Option 0
P/N 00404320
Description:
TVA-131 Basic Spare Parts Kit
~~091-60 Power Amp Driver
Reed Relay, 12 VDC, SPST, NO
NSC
NSC BD-345 Transistor
18C BD-346 Transistor
NSC
BD-344
BD-347
Transistor
Transistor
TOTAL: $120.00
Page 77
COMPLETE SPARE PARTS KIT
TVA-132 Option 0
P/N 0040-1321
Qty
1
1
2
2
6
1
1
1
4
1
P/N H&F
0040-1311
0010-0008
1508-3300
1508-1020
1508-1043
1510-1050
1510-1061
1510-1062
1510-3080
2100-0008
2100-0103 Connector, 3 pin
Description
TVA-131 Complete Spare Parts Kit
Inductor Assembly
Cap.,
Cap,,
Cap*,
Cap,,
Cap*,
Cap,,
Cap,, Electrolytic, 3000 uF,
DIP Socket,
Ceramic, 33 pF
Ceramic, .OOl uF
Ceramic, 0.1 uF, 100 V
Electrolytic, 1 uF, 25 'u'
Electrolytic, 10
Electrolytic, 10 uF, 25 V
16
pin
uF,
25 V
50 V
1
1
2
3
2
1
1
1
1
2100-0104.
21004123 Connector, 3 pin
2800-0001
4711-1279
4711-4101
4711-4102 Resistor, Carbon, 1 K, *W
4711-4104
4711-4153
4711-4243
4711-4333
4711-4392
Connector, 4 pin
InsuU$or for TO-220
Resistor, Carbon, 2.7 Ohm, 1W
Resistor, Carbon, 100 Ohm, cd
Resistor, Carbon, 100 K, &W
Resistor, Carbon,
Resistor, Carbon,
Resistor, Carbon,
Resistor,
Carbon,
15
24
33
3.9
K, &W
K,
*W
K, &J
K, &W
Page 78
COMPLETE SPARE PARTS KIT
TVA-132 Option 0
Continued
P/N
0040-1321
i&x
1
2
2
1
2
4
1
1
P/N H&F
4711-4512
4711-4913
4741-0033
4766-2103
4790-5278
4800-4002
4810-0100
5633-0054
Description
Resistor, Carbon,
Resistor, Carbon,
GE V33ZaS Varistor
Trimpot, 10 K
Resistor, Trlw, 0.27 ohm, 5W
lNl+002 Diode -
Diode Bridge,
Triad
Total:
F-54X,
$185.00
Power Transformer
6A,
5.1
K, $W
91
K, @?
100 PIV
Above with
COMPLETZ SPARE PARTS KIT WTTH VU
P/N 0040-132~
1 2900-0001 VU meter
Total:
$275.00
Page 79
BASIC SPARE PARTS KIT
TVA-142
c&y:
1
1
2
2
2
2
2
2
2
2
2
H&F P/N: Description:
0010-0001
0010-0002
3130-0555
3130-5534
3130-7812
3130-7818
3130-797
3130-7914
x30-7918
37l7-0001
4800-4002
Control Assembly, 1K
Switch Assembly
Timer, NE555
Operational Amplifier, NE5534
7812/LM340T-12, +12 Regulator
7818/LM34OT-18, +18 Regulator
Hex Buffer, 74CgO7
Hex Schmidt Trigger, 74C914
7918/LM320T-18, -18 Regulator
VTL-5C2 Optical Isolator, Vactec
Mode, Silicon, lN4002
2
2
1
1
4849-2222
5104-0005
5134-0002
5134-0003
Transistor, 2N2222
Buss AGC-l/2, l/2 Amp Fuse
Dip Switch, SPDT, Amp 435665-2
Mp Switch, DPDT, Amp 435470-5
TOTAL:
#92.00
Page 80
CCBIPLETE SPARE PARTS KIT
TVA-142
Qty:
1
2
2
2
2
2
2
2
2
2
2
H&F P/N: Description:
oooo-
15084031
1508-1042
1508-2200
1508-2240
1508-3010
15084180
1510-5060
152901510
1529-2000
152g-)oOO
Basic Spare Parts Kit
Cap,,
Cap*,
Cap*,
Cap,,
Cap.,
Cap*,
Cap.,
-Pa,
Cap,,
Cap*,
Ceramic, .Ol, 1oov
Ceramic,
Ceramic, 22pF, lKV
Ceramic, .22uF, 25V
Ceramic, 3OOpF, 1OOOV
Electrolytic, llOOuF, 5OV
Electrolytic, 50uF, 25V
Polystyrene, 150pF, 6OOV
Polystyrene, 20pF, 500V
Polystyrene, 3OpF, 6OOV
.OluF, 5ov
.l
2
2
2
3
2
2
1
1
1529-5600
1529-7500
15354261
2100-0002
uoo-0005
2K10-0006
UOO-0103
2100-0104
2100-0105
Cap.,
Cap*,
Cap*,
Polystyrene, 56pF, 6OOV
Polystyrene, 75pF, 6OOV
Tantalum, 12uF', 25V
Component Pin
Dip Socket, 8 pin
Dip Socket, 14 pin
Connector, 3 pin
Connector, 4 pin
Connector, 5 pin
Page 81
COMPLETE SPARE PARTS KIT
TVA-142....Continued
Qty:
1
1
1
1
1
10
1
2
2
2
2
P/N: H&F
2100-0106
2100-0123
UOO-0124
2100-0125
2100-0126
2100-0158
2410-0001
3714-5053
3714-5153
4711-4100
4711-4103
Description:
Connector, 6 pin
Connector, 3 pin
Connector, 4 pin
Connector, 5 pin
Connector, 6 pin
Connector Pin
Knob
LED, Red, MV 5053
LED, Orange, MV 5153
Resistor, 10
Resistor, 1OK
2
2
2
2
2
2
2
2
2
4711-4152
4711-4164
4711-4222
4711-4301
4711-4332
4711-4393
4711-4472
4711-4473
4711-4561
Resistor, 1.5K
Resistor, 160K
Resistor, 2.2K
Resistor, 300
Resistor, 3.3K
Resistor, 39K
Resistor, 4.7K
Resistor, 47K
Resistor, 560
Page 82
COMPLETE SPAREPARTS KIT
TVA-142 l oJ?inal Page
Qty:
2
2
2
1 5605-0003
1
P/N: H&F
4711-4824
47414039
4766-2502
5633-8613
Description:
Resistor, 820K
Metal Oxide Varistor, 39V
Trim Pot, 5K
Transformer, 150/15K:15K
Transformer, Power, 36~
TOTAL:
$185.00
Page 83
SERVICE BULLETIN
TVA-U+2 #02
SERIAL NUMBERS AFFECTED:
PURPOSE:
All
Increased gain for
mic channels
If desirable, 10 dB gain may be added to the mic preamps
to allow for microphones with lower than normal output.
Modifications can be made to any or all the channels as nece-
ssary by changing the feedback components in the mic section
of UUL~161.
Nodification time is about 5 minutes per channel.
To add 10 dB to Channel 1, remove the cover and locate
Ulll through
~l61.
Remove Cl13 and R116 (20 pF and 160 K)
from the Channel 1 preamp. They can easily be removed from
the top of the board by removing the solder on the pads with
a solder sucker or wick. Form and trim the leads of a 470 K
resistor and 10 pF ceramic or mica capacitor to fit back in
the holes. Resolder the connections on top of the board.
Modification of remaining channels involves replacing the
~123-163 capacitors and
~126-166
resistors, repeating the
above procedure.
Parts are available from Hallikainen & Friends if not
locally available.
P/n
P/n
4711-4474
1508-1000
470 K Resistor, l/4 w, 5% lO# ea.
10 pF Ceramic Capacitor
50# ea.
Page 84
\
i
\ .
'\
i'
:
;-+
,
i
I
P/10 H&3
0040-0010
0040-0020
00404120
0040-1330
0040-1311
CO404312
0040-1320
00404321
00104322
00404420
PARTS KIT PRICE LIST
1 July 1982
Description
TVA142 Mike Gain Increase Kit
TVA132
LOGll2/121
Lamp Kit
Logging
System Semiconductor Kit
TVA1324 Basic Spare Parts Kit
TVAl32-l
TVAl32-l Coqhte
Complete
Spares
Kit, less IfU Meter
Spares Kit, with VU Meter
m132-0 Basic Spare Parts Kit
TVAl32-O Complete Spares Kit, less W Meter
TVA13200 Complete Spares Kit, with W Meter
TVAl42-O Basic Spare Parts Kit
.
($1 Price
5.00
10.00
150.00
95.00
165.00
255.00
120.00
185.00
275.00
92.00
OOf+O-1421
0040-1423
00604429
0040~1711
TVA14200 Complete Spare Parts Kit
TVAli&1
Complete Spare Parts Kit
TVA142 Crosgttik Reduction Kit
TEL171 Semiconductor Kit
185.00
195.00
50.00
135.oo
allikainen & Friends
101 Suburban Road,
San Luis Obispo, CA 93401-7590
(805) 541-0200
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