475 Service
P a g e 5 of 10
S c h e m a t i c D i a g r a m a n d B o a r d P h o t o C h a n g e s
Fig. 7-9
B o a r d title s h o u l d read:
A 4 V e r t i c a l M o d e - G a i n S w i t c h
C i r c u i t Board.
C 3 2 9 is a d d e d to b o a r d a b o v e P300.
S c h e m a t i c <^3^>
B o a r d title at left s h o u l d r e a d P A R T I A L A 4 , V E R T M O D E - G A I N SW B O A R D
P 3 0 0 P i n 1 (Index) inp u t s h o u l d read:
F r o m C R 1 1 0 2 <(10)>
The in p u t to R 3 2 0 s h o u l d read:
C H 2 SCA L E F A C T O R F r o m S53
The input to R 3 1 0 s h o u l d r e a d C H 1 S C A L E F A C T O R F r o m S13 < ^ 1 ^
U 3 7 0 P i n 11 input s h o u l d read:
C H 1 + V E R T S I G F r o m Q 1 7 8 < ^ > < ^ >
J 4 1 0 o u t p u t s h o u l d read:
C H 2 T R I G S I G TO C R 7 0 3
C 4 2 0 v a l u e is c h a n g e d to 2.7 pF
Fig. 7-11
C 4 9 4 A a n d C 4 9 4 B are a d d e d at the r i g h t of R 4 9 2 and R 493
P r e e x i s t i n g R 4 9 4 a n d C 4 9 4 are c h a n g e d to R 4 9 4 B & C 4 9 4 B
S c h e m a t i c <^4/>
C h a n g e the d e t a i l s for S 4 5 0 A a n d U 4 7 0 as i n d i c a t e d in the a t t a c h e d
p a r t i a l s c h e m a t i c s .
P 4 5 0
R 4 4 7 n o m i n a l v a l u e is 3. 0 1 K.
C l / 3 7 3
R e v / 5 7 3
Summary of Contents for 475
Page 6: ...475 475 Oscilloscope ...
Page 20: ......
Page 46: ......
Page 151: ...A B C D E F G Fig 7 4 P 0 A4 Vertical Mode Switch circuit board ...
Page 152: ...n m m m 1 t siumm c ii im ...
Page 154: ...Diagrams 475 A B C D E F G ...
Page 155: ...GRID LOCATOR Fig 7 8 P O A3 Vertical Preamp circuit board ...
Page 157: ...Diagrams 475 ...
Page 158: ...GRID LOCATOR 2 3 4 5 6 7 8 9 1 10 11 1 12 Fig 7 10 P 0 A3 Vertical Preamp circuit board ...
Page 160: ...Diagrams 475 GRID LOCATOR Fig 7 11 A5 Vertical Output circuit board ...
Page 163: ...Diagrams 475 GRID LOCATOR Fig 7 12 P O A8 Trigger Generator And Sweep Logic circuit board ...
Page 167: ... 415 OSCILLOSCOPE B T R IG G E R G E N E R A T O R g B TR IG G E R GEN ER A TO R ...
Page 168: ...Diagrams 475 GRID LOCATOR ...
Page 172: ...SWEEP G E N ER A TO R S ...
Page 175: ...TIM IN G HORIZONTAL DISPLAY SWITCHING ...
Page 177: ...A 011 HORIZONTAL AMPLIFIER 8 l j k J Ll J Ol Z o N C O X U 1 C L O o v O o _J V v P O in r ...
Page 179: ... 476 OSCILLOSCOPE ...
Page 180: ...POWER SUPPLY ...
Page 182: ...CRT CIRCUIT ...
Page 185: ...C A L IB R A T O R A N D F A N C I R C U I T 4 C A LIB R A TO R FAN MOTOR C IR C U IT ...
Page 189: ......
Page 190: ...4 T 475 OSCILLOSCOPE FIG 1 FRO NT PANEL ...
Page 191: ...475 OSCILLOSCOPE FIG 2 MAIN FRAME ...
Page 199: ......
Page 200: ...FIG 3 RIGHT SIDE l 475 OSCILLOSCOPE ...
Page 201: ...V S X O t l B O T T OVJ 8 8 ...
Page 209: ......
Page 210: ...5 ...
Page 211: ...4 4 75 O S C ILLO S C O P E FIG 5 CAB IN ET ...
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Page 241: ... 1 I R I II9A po S IT I o n f i n e I R l 130 PAGE 4 OF 5 R 1234 Ml 9 91 9 473 ...