Tektronix 2236, Instruction Manual

Page: 239 / 350

2236 Service
T o i d e n t i f y a n y c o m p o n e n t
m o u n t e d o n a c i r c u i t b o a r d a n d
t o lo c a t e t h a t c o m p o n e n t in t h e
a p p r o p r i a t e s c h e m a t ic d ia g r a m
L o c a te th e C ir c u it B o a rd Illu s tra tio n
Hi))) hum
Id e n tify th e p a r tic u la r c ir c u it b o a rd th a t th e c o m p o n e n t is .. -.... , /
lo c a te d o n b y u s in g t h e C ir c u it B o a rd L o c a tio n V
illu s tr a tio n (F ig u re 9 - 5 ) to d e te r m in e th e A s s e m b ly
N u m b e r.
2 . D e te rm in e th e C irc u it N u m b e r
a C o m p a re th e c ir c u it b o a rd w i t h its illu s tr a tio n a n d lo c a te
th e d e s ire d c o m p o n e n t b y a re a a n d s h a p e o n th e i llu s t r a ­
tio n .
Scan the table adjacent to the Circuit Board Illustration and
find the Circuit Number of the desired component.
z z z z z z z z ^ : ^ ^
A 6 C R T B OA R D
3. Locate the Component on the Schematic Diagram
a. Locate and pull out tabbed page whose number and title
correspond with the Schematic Diagram Number just
determined in the table. Schematic diagram nomenclature
and numbers are printed on the front side of the tabs
(facing the front of the manual).
Scan the Component Location Table adjacent to the
schematic diagram and find the Circuit Number of the
desired component.
d.
Under the SCHEM LOCATION column, read the grid
coordinates for the desired component.
Using the Circuit Number and grid coordinates, locate the
component on the schematic diagram.
COMPONENT LOCATION
TABLE
PULL OUT PAGE
TABS FOR CIR C U IT
BOARD ILLU STR A TIO N
5. Locate the Component on the Circuit Board
In the manual, locate and pull out the tabbed page whose
title and Assembly Number correspond with the desired
circuit board. This information is on the back side of the
tabs
Using the Circuit Number and grid coordinates, locate the
component on the Circuit Board Illustration.
In the circuit board location illustration, determine the
location of the circuit board in the instrument.
d. Find the circuit board in the instrument and compare it
with its illustration in the manual to locate the desired
component on the board.
From the schematic diagram, determine the Assembly
Number of the circuit board on which the component is
mounted This information is boxed and located in a corner
of the heavy line that distinguishes the board outline.
Scan the Component Location Table for the Assembly
Number just determi ned and fi nd the Circuit Number of the
desired component.
Under the BOARD LOCATION column, read the grid
coordinates for the desired component.
Figure 9-3. Locating components on schematic diagrams and circuit board Illustrations.
A f t A S Q F M B L Y
y
C IR C U IT
S C H E M B O A R D C IR C U IT S C H E M B O A R D
N U M B E R
L O C A T IO N L O C A T IO N
N U M B E R
L O C A T IO N L O C A T IO N
C602 2r. 3C 0 6 5 6 2F 2B
C C603 ___ 1G 0 66 5 1G IB
cB o 5 4E 7 ^
—
0 6 6 8 2G 28
C612 7C 3E
C615 7C 3D R604 ^ 4 C IE
C616 2C 3C R605 ---------- — IE
C617 7D 3D R608 4E
C618 7E 3E R609 4E 2D
C619 6E
3C
R610
7B
3E
C624 4F
3D
R614 7C 30
C626 7G 2 0 R616 1C 30
C632 s n
_____ I t
R623 4 0 2E
____(C643 30 4 B ) ^ _ R625 7F 2D
_ C651 3E
3B 7F 20
' 0 e © 3 ----------
R62’7 ^ '
„ R630
ID
Q606
Q610 4E
7C
2 0
3 0
TP624 38 20
Q615 70 3 0
Q645 3E 3B U 615 ID 3C
CHASSIS MOUNTED PARTS
C IR C U IT S C H E M B O A R D C I R C U I T S C H E M B O A R D
N U M B E R L O C A T IO N L O C A T IO N N U M B E R L O C A T IO N L O C A T IO N
L635
51 CH AS SIS V635 6J CH ASSIS
PULL OUT
PAGE TABS
FOR SCHEMATIC
DIAGRAMS
SCHEMATIC D IAG RA M
NAM E AND NUMBER
4204-58