Field Modification Note - Grass Valley
Field Modification Note - Grass Valley
Field Modification Note - Grass Valley
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<strong>Field</strong> <strong>Modification</strong> <strong>Note</strong><br />
<strong>Grass</strong> <strong>Valley</strong> Products<br />
FM Number: 075034900 Ref ECO: 624D Date: May, 1998<br />
Product:<br />
Model 4000 Series Digital Production Switchers<br />
Assemblies:<br />
Purpose:<br />
Framestore Mezzanine Module, Assembly Number 064843-00 (Letter versions A-H)<br />
Corrects flashing on mosaic effects.<br />
WARNING<br />
Some or all of the parts supplied in this field modification note are surface-mounted<br />
components (SMT). Special skills and equipment as listed in the ANSI/IPC-R-700, Suggested<br />
Guidelines for <strong>Modification</strong>, Rework and Repair of Printed boards and Assemblies (Sections<br />
5.1.4.3, 5.1.10, 5.1.10.1, 5.1.10.2, 5.1.10.3 and 5.4.1 through 5.4.5) are needed to change<br />
surface-mount parts in the field. Any damage incurred to the board or its components as a<br />
result of the installation of this <strong>Field</strong> Mod <strong>Note</strong> is entirely the responsibility of the customer<br />
and may void the warranty.<br />
075034900<br />
Parts Included:<br />
Part Number Description Qty<br />
075034900 Sticker 1<br />
RV1000-00 Resistor, 100 ohm, 1%, 1/4 W, Mtl Flm 1<br />
CB2227-01 Capacitor, Mica, D10, 100 pF, 1%, 500WV 1<br />
Tektronix, Inc., <strong>Grass</strong> <strong>Valley</strong> Products<br />
P.O. Box 1114 <strong>Grass</strong> <strong>Valley</strong>, California 95945 USA Toll-Free 1-800-547-8949<br />
©1998 by Tektronix, Inc. All rights reserved.<br />
License Symbol: GTDU, Tariff Schedule: 4901.10.0040.2<br />
Page 1 of 3
075034900<br />
Instructions:<br />
CAUTION<br />
To prevent static damage to sensitive components, use a grounded wrist strap, mat, and tools when<br />
handling printed circuit modules.<br />
1. Locate the Framestore module (064814-XX) in the lower right front B Bay and remove it. The<br />
Framestore mezzanine (064843-00) to be modified is mounted on the Framestore module.<br />
2. The modification must be done on the solder side of the mezzanine. Remove the mezzanine<br />
from the main module by removing the four screws holding it in place and carefully prying it<br />
up with a suitable tool from the three connectors.<br />
3. On the component side of the mezzanine, locate IC U32 as shown in Figure 1. Turn the<br />
mezzanine over and locate IC U57. Below IC57, locate the feedthrough hole from IC U32 as<br />
shown in Figure 1.<br />
4. Trim the leads of the 100 ohm resistor provided (RV1000-00) to about 1/2 inch solder one side<br />
to the feedthrough hole of U32 as shown in Figure 1.<br />
5. Trim the leads of the 100 pF capacitor provided (CB2227-01) to about 1/2 inch and solder one<br />
side to the free lead of the 100 ohm resistor and the other lead to the bottom of the capacitor<br />
(GND) next to R31 as shown in the figure.<br />
6. Re-install the mezzanine onto the main module by carefully lining up the connectors and<br />
replacing the four screws.<br />
7. Place the green FMN sticker included with this kit in a prominent place on the component side<br />
of the mezzanine module to indicate this change has been made.<br />
8. Re-install the main Framestore module into the frame.<br />
Page 2 of 3
075034900<br />
FRAME STORE<br />
MEZZANINE<br />
LOCATION OF IC U32<br />
ON COMPONENT SIDE<br />
SEE DETAIL BELOW<br />
COMPONENT SIDE<br />
DETAIL<br />
LOCATION OF<br />
MODIFICATION<br />
U57<br />
100 ohm<br />
U32 pin 2<br />
SOLDER SIDE<br />
U31<br />
100 pF<br />
GND<br />
Figure 1<br />
Page 3 of 3
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