Block Diagram Zvm-131 And Zvm-135 - Zenith ZVM-131 Service Manual

POWER CORD
MONITOR
MAIN BOARD 9-227-05
(SEE FIGURES 16, 17, AND 18)
J.
____________________
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RGBI
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CD
5M (JUMPER)
L
COMPo LJ11-* _ _ _ _ _ _ _ _ _ .::...:..SY.:..:N..:;C..:...--;® ,..... VIDEO B+, Gl BASE, (JUMPER)
SWITCH Lt-~_-ri-VERTICAL DRIVE 120 VDC
VIDEO * +26 VDC, SUPPLY, RGB (HORIZONTAL) CRT, DEFLECTION YOKE
:
~
!..-
+ 12 VDC,
+~~~~~
AND BASE + A-11161-04 (ZVM-135)
HI Z
~
60 VPP 170VPP, SIGNAL DRIVE AND BEAM BENDER ASSEMBLY
- 1'::\ APL 5A2*""""'- ......... 5C2*
j'\
100-679-02 CRT
)tIDEO
~* ~
14'
VERT SYNC
'p.;~.I--tJ;;;;;;;;a.
_ _ _ _ _ _
.&;;~......
(ZVM-131)
750 pol COMPOSITE \::I (MIXED VIDEO OUTPUT BOARD DAG
~
- - _ .... _ -...
VIDEO MODES) +12VDC- 9-155-12 (ZVM-135)
.1.. Y
AUDIO:~'*
SUPPLY SEE FIGURES 25,26, AND 27 CRT
OUT
.I
START UP .!OCkET, _ _ . _
~
AND 9-155-18 (ZVM -131) I I
AUDIO ,r.:'*'--_ _ _ _ _
0~7::.....-I
\.21
VIDEO B+ SEE FIGURES 28 AND 29. I IYOKE CRT
IN
~ ~
/
RGB
5X~~ FI~955H-33387-05
-
~
YOKE
(ZVM-131) HIGH
VOLTAGE
DEGAUSSING
COIL
~ _ _ _ VERTICAL DEFLECTION
~EFLECTION
+ 150
A-lll05 TRANSISTOR
AND BRACKET ASSEMBLY
(SEE FIGURE 21)
HORIZONTAL
V
P2 (JUMPER) VOLTS
II----I--f-- ---- f-----I---- -
f-~;:;H:~-':~~~U~~PEIR)------~VV ~
......
A-l0530 (SEE FIG- H.O.T 1..-_ _ ....
1-1
POWER SWITCH
I
HIGH VOLTAGE AND HORIZONTAL SWEEP BOARD URES 22 AND 23) CX320'4
I
~POWER INDICATOR
I
9-247 A 1=:Ii3T3 AND
I .....---
~
VOLUME CONTROL
' * * * *
Al
9E~:;F~ ~ g/~!~2~~ ~JUMPER)
I
(SEE FIGURES 19,20, AND 21.) 3 R 3 " " ' T ' " CX3204A
I
_I""
1-1
I
~
A-l0632-03 HIGH
I
PRIMARY CONTROL
I
~
VOLTAGE POWER
I
BOARD (SEE FIGURE 32)
I
SUPPL Y (SEE FIG-
I
I
URES 21 AND 24)
I I
L _________ ~~.:.:~~~.:..~N~.!:.OW~~~~~ ASSEMB~~.:2.2..~~~
_ _ _ _ _ _ _ _ _
J
SECONDARY CONTROL
ASSEMBLY
AUDIO VIDEO SYNC BOARD 9-230-05
ITJ TP7
A-9522-0 1 (ZVM-131>
A-9522-05 (ZVM-135)
(SEE FIGURES 33 AND 34)
POWER ""_
INDICATOR L-..-.
tJ
DISPLAY DRIVE
ITJ~2~A~7 _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _
-1
~BLACK LEVEL
I-ICOLOR LEVEL
(SEE FIGURES 10,11, AND 12.)
crl
2B7
P
~
________________________________
T~P~6-1:JP-~[l4P4
1
SPEAKER~:~:RPNESS
THE REFERENCED FIGURES ARE
COMPONENT L9CA TlONS, WAVEFORMS,
AND SCHEMATICS FOR THE
APPLICABLE BOARD OR ASSEMBLY.
Figure 8
Block Diagram ZVM-131 and ZVM-135
*CABLE PIN ASSIGNMENTS
CABLE
#1
#2
#3
#4
#5
#6
#7
CONNECTOR TO CONNECTOR
2B5 (MAIN BOARD)
5C2 (VIDEO OUTPUT BOARD)
1
5
2 4
3 3
4 2
5 1
2A5 (MAIN BOARD) 5A2 VIDEO OUTPUT BOARD)
1 4
2 3
3 2
4 1
F/G (AUDIO/VIDEO SYNC BOARD) X (MAIN BOARD)
1
3
2 2
3
1
Y (MAIN BOARD)
4
3
5
2
6 1
E (AUDIO/VIDEO SYNC BOARD) E (MAIN BOARD)
1 6
2 5
3 4
4 3
D (AUDIO/VIDEO SYNC BOARD) D (MAIN BOARD)
COMP
4
~
t
1
2
I
2
RGB
3~
~~i~
3
VIDEO HI Z
I
VIDEO 750hm
I
9F2
(INPUT PANEL) (INPUT PANEL)
(AUDIO/VIDEO SYNC BD.)
CENTER PIN CENTER PIN PIN 1
AUDIO IN
I
AUDIO OUT
r 9E4
(INPUT PANEL)
(INPUT PANEL)
(AUDIO/VIDEO SYNC BD.)
CENTER PIN CENTER PIN
PIN 1
* *
DB-25 RGB IN CONNECTOR PIN ASSIGNMENTS
1 NEGATIVE HORIZONTAL OR NEGATIVE COMPOSITE SYNC 1
2 POSITIVE HORIZONTAL OR POSITIVE COMPOSITE SYNC 1
3 NC (RESERVED FOR MIXED MODE)
4 POSITIVE VERTICAL OR POSITIVE COMPOSITE SYNC
5 GREEN INPUT
6 BLUE INPUT
7 RED INPUT
8 NC (RESERVED FOR VERTICAL HEIGHT SELECT)
9 NC (RESERVED)
10 GREEN FEEDTHROUGH
11 APPLE X 1 INPUT
12 APPLE X2 INPUT
13 APPLE X3 INPUT
14 NEGATIVE VERTICAL OR NEGATIVE COMPOSITE SYNC
15 IBM INTENSITY
16 GROUND
17 NC
18 AUDIO INPUT
19 GROUND
20 COMPOSITE VIDEO INPUT
21 RED FEEDTHROUGH
22 BLUE FEEDTHROUGH
23 NC
24 NC
25 APPLE X8 INPUT
1
NOTE: Composite sync must be supplied to both the horizontal
and vertical sync inputs.