Mechanism Adjustment; Before Starting Repair And Adjustment; Precautions; Checking For Proper Mechanical Operations - JVC HR-S6850MS Service Manual

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Table Of Contents

Table of Contents

2.1 Before starting repair and adjustment

2.1.1 Precautions

(1) Unplug the power cord plug of the VCR before using your

soldering iron.

(2) Take care not to cause any damage to the conductor

wires when plugging and unplugging the connectors.

(3) Do not randomly handle the parts without identifying

where the trouble is.

(4) Exercise enough care not to damage the lugs, etc. dur-

ing the repair work.

(5) When reattaching the front panel assembly, make sure

that the door opener of the cassette holder assembly is

lowered in position prior to the reinstallation. (See SEC-

TION 1 DISASSEMBLY.)

(6) When using the Jig RCU, it is required to set the VCR to

the Jig RCU mode (the mode in which codes from the

Jig RCU can be received). (See SECTION 1 DISASSEM-

BLY.)

2.1.2 Checking for proper mechanical operations

Enter the mechanism service mode when you want to oper-

ate the mechanism when no cassette is loaded. (See SEC-

TION 1 DISASSEMBLY.)

2.1.3 Manually removing the cassette tape

1. In case of electrical failures

If you cannot remove the cassette tape which is loaded be-

cause of any electrical failure, manually remove it by taking

the following steps.

(1) Unplug the power cord plug from the power outlet.

(2) Refer to the disassembly procedure and perform the dis-

assembly of the major parts before removing the drum

assembly.

(3) Unload the pole base assembly by manually turning the

loading motor of the mechanism assembly toward the

front. In doing so, hold the tape by the hand to keep the

slack away from any grease. (See Fig.2-1-3a.)

(4) Bring the pole base assembly to a pause when it reaches

the position where it is hidden behind the cassette tape.

(5) Move the top guide toward the drum while holding down

the lug (A) of the bracket retaining the top guide. Like-

wise hold part (B) down and remove the top guide.

Section (C) of the top guide is then brought under the

cassette lid. Then remove the top guide by pressing the

whole cassette tape down. (See Fig.2-1-3b.)

(6) Remove the cassette tape by holding both the slackened

tape and the cassette lid.

(7) Take up the slack of the tape into the cassette. This com-

pletes removal of the cassette tape.

Note:

• For the disassembly procedure of the major parts and

details of the precautions to be taken, see "SECTION

1 DISASSEMBLY".

SECTION 2