Equipment information:

Sencore TC28 Test Set
Manufacturer:
Sencore
Model: TC28
Date:
Category: Measurement instruments
Group: Test Set
Description: Tube and Transistor Tester
Information:
                                    Numerous solid-state devices are finding increasing
application in television
and other home entertainment equipment. These devices are also
being used in conjunction with a multitude of tube types to
produce the
hybrid sets.
To be effective in the field service of these units, the
service technician is
faced with transporting a rather cumbersome and costly array
of test
equipment. The Sencore engineering staff is aware of the
problems and
needs encountered in the service industry. In response to
these needs, the
ever popular Mighty Mite Tube tester has been expanded to
incorporate
the features of Sencore's latest solid state device tester,
the TOUCH
TONE CRICKET. Now, in one compact, rugged, easy-to-use unit,
exists
the ability to completely and reliably test the tubes,
transistors, FET's
and diode devices found in modern home entertainment equipment.
FEATURES
* A single instrument for fast, accurate testing of tubes,
transistors and
FET's without complicated set ups.
* Pin elimination switches for greater capability in tube
tests as new
types are announced.
* Full cathode current emission test of tubes.
* Sensitive 100 megohm grid leakage test in addition to
regular shorts
test, all on a large easy-to-read meter.
* Complete test for transistors and FET's including
in-circuit gain and
out-of-circuit gain and leakage with NO set-up or basing
data required.
* Rugged construction throughout, including protection
against overload
for sensitive meter and circuitry.

These manuals are available for the above equipment:

Sencore -- TC28 -- Service Manual
File name: Sencore-5945-Manual-Page-1-Picture
Manual Type: Service Manual
Pages: 40
Size: 675.93 Kbytes (692148 Bytes)
Language: english
Revision:
Manual-ID/Number:
Date:
Quality: Scanned document, all readable.
Upload date:
MD5: aec71d492c7d1684e12b0d33dd0672df
ed2kID: 0ce4e2ca08452911af1384579a6dbbad
Downloads: 89 since 04 May 2014
Information:
SAFETY REMINDERS 1
INTRODUCTION .
DESCRIPTION
FEATURES .
3
33
SPECIFICATIONS
CONTROLS .
3
4
GENERAL
OPERATIONS.................................................................
. 4
OPERATION . 6
TUBE TEST SET UP 6
SHORTS TEST .
EMISSION TEST . .
6
7
GRID - LEAKAGE TEST 7
LIFE TEST . . . 7
FILAMENT WARM UP
TIME............................................................
. 8
FILAMENT VOLTAGE SENSITIVITY 8
REJUVENATION................................................................................
. 8
SET UP FOR NEW TUBES . 9
"A" PIN ELIMINATION 9
"B" FILAMENT . . 9
"C" LOAD 10
"D" SET UP 10
SOCKET SET UP 10
EXAMPLE OF SETTING UP THE TC28 FOR NEW TUBES 11
TRANSISTOR
TESTS.............................................................................
12
GAIN TEST . . 12
LEAKAGE TEST . . 13
DETERMINING BASING 13
LOCATING LEAKAGE 14
CHECKING DIODES . 17
CIRCUIT
DESCRIPTION........................................................................
18
THEORY OF OPERATION - TUBE
TEST'...................................... 18
EMISSION
TEST.................................................................................
19
GRID - LEAKAGE TEST 20
SHORTS
TEST.....................................................................................
20
THEORY OF OPERATION - TRANSISTOR TEST....................... 21
GAIN
TEST..........................................................................................
21
POWER
SUPPLY..................................................................................
22
2KHz OSCILLATOR AND SIGNAL AMPLIFIERS....................... 22
LOGIC CIRCUIT AND INDICATOR DRIVE
................................. 22
LEAKAGE TEST . 24
SERVICING THE TC28 . . 25
DISSASSEMBLY INSTRUCTIONS 25
CALIBRATION.............................. 26
TROUBLE CHARTS . . 29
SERVICE AND WARRANTY 32
Sencore-5945-Manual-Page-1-Picture
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