Service Overview; Boards Location; Wru-806B Removal; Wru-806B Checking - Sony WRU-806B Service Manual

Uhf synthesized tuner unit

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Table of Contents

For removing a WRU-806B from the MB-X6, refer to "In-

stalling the tuner units" in the Operating Instructions.

WRU-806B

Section 1

Service Overview

The following procedures describe how to prove WRU-

806B (repair unit) whether it needs to be repaired or not.

RF-155 board

Equipment Required : MB-X6 (quality unit)

(1) Install the repair WRU-806B to be examined in a quali-

(2) Check the fault with a quality MB-X6.

DP-476 board

WRU-806B (quality unit)

ty MB-X6.

. If there is a fault, WRU-806B (repair unit) is defective.

Check the WRU-806B then fix a faulty section, and

perform "2. Electrical Alignment".

. If there is no fault found on the MB-X6, repairing

WRU-806B is no longer defective. Thus the repairing

MB-X6, other than WRU-806B, is defective.

1-1

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