Service manual

Drive Mechanism GV 30…, GV 50…

5 - 16 GRUNDIG Service

Drive Mechanism

The specified position numbers (i.e. 75000) are also used in the

exploded views and in the case of a spare part in the spare parts list.

1. Test Equipment / Jigs

Part Number

Nylon gloves ...................................................... commonly available

Slide gauge ........................................................ commonly available

Test cassette (HiFi) ....................... 92754 010 1600

Torque meter cassette................... 75988 047 1200

Torque meter 600gf-cm ........................ 75981 311 3200

Torque screwdriver ................. commonly available

Screwdriver (slotted) ............... commonly available

Oil ......................................................... 75988 061 7700

Grease .................................................. 75988 061 7800

75988 061 7900

75988 061 8000

Head conducing paste ..................... commonly available

Note on the application of lubricants:

– Always use the specified oil and grease. Other lubricants may cause

malfunctions in the mechanism.

– Be careful to keep the points/surfaces to be lubricated free of dust or

foreign bodies.

Tape drum

Video head

Tape path surface

Fig. 2.1

2. Cleaning

Methyl alcohol .................................................... commonly available

Cleaning cloth (chamois or

soft lintfree cloth) ................................................ commonly available

2.1 Cleaning the Tape Drum (Fig. 2.1)

Hold the tape drum and clean it with a chamois or soft lintfree cloth

moistened with methyl alcohol. Wipe in the horizontal direction.

Warning: Wiping in the vertical direction or applying excessive force

may cause damage to the video heads.

2.2 Cleaning the Tape Path and Reel Driving System

Clean the pinch roller, capstan, tape guides, full erase head, R/P head,

the reels, pulley, belt drive (pulley flanged to capstan motor), belt, with

a chamois or soft lintfree cloth soaked with methyl alcohol.

Note on the use of cleaners:

– Always use the specified cleaners. Other cleaners may cause

damage to the parts to be cleaned.