790200201
Display Systems
Marquee 8521 Quick Start Guide
1.3 Electronic
Chassis
Main
Assemblies and Dimensions
#
VDCDS P/N
DESCRIPTION
QTY
1 03-280336-07P Control/DPB/Stig-Waveform
1
2
81722-01
Marquee Contrast Modulation
1
3 03-270354-04P Module
Focus
&
Geometry
1
4 03-271330-02P Stigmator
Module
1
5 03-270350-01P Convergence
Amp/Vertical
Deflection
Module 1
6 03-270335-05P Video
Input
Module
1
7 03-000250-02P IR
Sensor
1
8 03-000310-02P HVPS
1
9 03-000229-05P LVPS
1
Ref 81721-01
Conv/Stig/Vert
Adaptor,
PCB
1
Ref 81730-01
HUD Mother Board, Elec. Chassis
1
Ref 81741-01
Vertical
Load
2
HOR/COMP
RED
GREEN
BLUE
VERT
SYNC
RESET
POWER
STANDBY
H FAIL
V FAIL
C
LVPS
ERROR
DIAGNOSTICS
EHT
REMOTE
RS-232
IN
OUT
SWITCHER
21.2 in. [54 cm]
17.1 in [43
cm]
22
.0 in. [56 c
m
]
10.6 in.
[27 cm]
23.0 in. [58 cm]
22
.0
in. [56 c
m
]
Rear View
Top View
Front View
Side View
1
2
3
4
5
Blank
6
Blank
7
8
9
1.4 CRT Head Main Assemblies and Dimensions
VDCDS P/N
DESCRIPTION
QTY
03-007062-03P
Green CRT 8" MAG Focus
1
03-270338-02P
Video Neck Module
1
21-000687-04 Stigmator
Ring
1
21-000691-01
Yoke Deflection 8"
1
21-000692-01
Coil, Convergence 8"
1
21-000695-01
Focus MAG with Stigmator 8"
1
59874-01
Splitter, 1 IN, 1 OUT
1
59879-01
Lens, Low MAG, Hud
1
81731-01
HUD Mother Board, Head
1
81732-01
HUD Horizontal. Deflection Module
1
25.0 in. [64 cm]
27.4 in [70 cm]
34.6 in [88 cm]
TOP VIEW
FRONT VIEW
SDIE VIEW
REAR VIEW
9.5 in.
[24 cm]
9.
5 i
n.
[2
4 cm
]
Examine the lens and hardware as shown in Figure
2. The lens consists of a single focus barrel. The lens
is secured in place with a lens locking ring.
Additionally, the lens consists of a metal lens cover
which is screwed in-place. To remove the lens cover,
rotate the cover counterclockwise (CCW) and place
in a secure location for reuse. To focus the lens,
loosen the lens locking ring. Note; the lens locking
ring employs fine threads and requires multiple turns.
Once loosen, rotate the lens barrel until the desired
focus is achieved.
Figure 2. 8521 Lens Assembly
LENS LOCKING
RING
LENS COVER
