Mitsubishi Electric VS-A50, Service Manual, Page: 43 / 66

PAGE 43
MODELS: VS-A50 / WS-A48 / WS-A55 / WS-A65
Parts Ordering
To expedite delivery of replacement parts orders, specify the following:
1. Model Number/Serial Number
2. Part Number and description
3. Quantity
Note: Unless complete information is supplied, delay in processing of orders will result.
Critical and Warranty Parts Designation
Critical Electrical Components are indicated by Bold Type in the Parts List, and in the schematic
diagrams by shading.
Warranty Return Parts are indicated in the Parts List with an (*) .
Parts Tolerance Codes
Refer to the following chart for tolerance characteristics of electrical components.
REPLACEMENT PARTS
MARK B C D F G J K
Tolerance % ± 0.1 ± 0.25 ± 0.5 ± 1 ± 2 ± 5 ± 10
MARK M N V X Z P Q
Tolerance % ± 20 ± 30 ± 10
+ 40
- 20
+80
- 20 +100
- 0
+30
- 10
MARK M N V X Z
Tolerance (pF) ± 0.1 ± 0.25 ± 0.5 ± 1 ± 2
Replacement Part Notes
When Replacing the RF-Switch (RF-SW) or the PCB-SIGNAL:
1. Remove the PLATE-RF SW from the original component,
shown in the diagram at the right.
2. Install the PLATE-RF SW on the new RF-SW.
When Replacing the EEPROM
The EEPROMs (IC7C01, IC2K02 and IC8D0) store the adjustment data. After replacing the EEPROM, readjust the
data to the values given in the tables on pages 28 to 30. If good performance is not obtained with these values,
perform the Adjustment Procedure(s) given in the Description and Adjustment columns.