Test Equipment / Jigs; Drive Mechanism; Cleaning - Grundig GMI4000 Serviceanleitung

Drive Mechanism

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

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 .................
Screwdriver (slotted) ............... commonly available
Oil ......................................................... 75988 061 7700
Grease .................................................. 75988 061 7800
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.
5 - 16

2. Cleaning

Methyl alcohol .................................................... commonly available
Cleaning cloth (chamois or
soft lintfree cloth) ................................................ commonly available
Part Number
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.
commonly available
Fig. 2.1
75988 061 7900
75988 061 8000
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.
Tape drum
Video head
Tape path surface
GV 30..., GV 50...
GRUNDIG Service