Tektronix TAS 475 - Page 51

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Circuit Description
ANALOG BOARD
A1
~ &0: I ATTENUATOR!
1, I J401
Ie" ,I f' i J4021r-A-TT-E-N-U-A-TO-R-'!
ICH 3! &2: IATTENUATOR!
DISPLAY DRIVER
BOARD
A3
NOTE: A10 USED ONLY
INTAS485
VERTICAL
TERMINATION
ASSEMBLY
A10
n
P77
J77
>
~u~L
1, I J451
ICH 4! el
3
:
.... IA-TT-E-N-U-A-T-O ...... R! P80
n
J80
1, J J450 ~ 2 PINS (W75
U 4 VERTICAL :
J68 n P68 P69 n rI J69 DEFLECTION W7J
2PINS~> fA DL68 <~ 2 PINS ULJ"-. _____ ...
_____ P_5_0-<~ ~50 40 PINS tJ U U LJ J73 ~ n P73 P7Eh
U J67t, n P67 I W66 5PINS~~5 9 ~----'
23 PINS~t 2~. • 23 TERMINATIONS ~ U U LJ.------.
P70 n ~ J70 J72 ~ n P;:2
U ~J 13 PINS • PIN:~ ~ P7.
HORIZONTAL~ ~'>--------'
P71 n J71 DEFLECTION ~:=:)- ____ ---I
~2PINS lJ U
U Lf ... _____ ....... ~
~
XT P66 J66
ZAXIS n
IN <~NC
J21H~ 1PIN
n n
____________________ ~< ~------~H~IG~H~VO~LT~A~G~E-----------------------------------J
U U
Figure 3-1: Block Diagram (Cant.)
TAS 475 and TAS 485 Service Manual
A64
3-3
Scan by Zenith