Alignment Procedures Of Mechanism; Alignment Points In Eject Position; Loading Arm (Sp) And (Tu) Assembly; Mode Gear/Cam Gear, Rack Assembly - Philips VR550 Service Manual

ALIGNMENT PROCEDURES OF MECHANISM

The following procedures describe how to align the
individual gears and levers that make up the tape load-
ing/unloading mechanism. Since information about the
state of the mechanism is provided to the System
Control Circuit only through the Mode Switch, it is
essential that the correct relationship between individ-
ual gears and levers be maintained.
All alignments are to be performed with the mech-
anism in Eject mode, in the sequence given. Each
procedure assumes that all previous procedures have
been completed.
IMPORTANT:
If any one of these alignments is not performed prop-
erly, even if off by only one tooth, the unit will unload or
stop and it may result in damage to the mechanical or
electrical parts.

Alignment points in Eject Position

Top View
Alignment 1
Bottom View
Alignment 1

Loading Arm (SP) and (TU) Assembly

Install Loading Arm (SP) and (TU) Assembly so that
their triangle marks point to each other as shown in
Fig. AL2.
Alignment 2
Mode Gear
Keeping the two triangles pointing at each other, install
the Loading Arm (SP) Assembly so that the last tooth
of the gear meets the most inside teeth of the Mode
Gear. See Fig. AL2.
Loading Arm
(TU) Assembly
Alignment 1
Alignment 3
Alignment 3
Cam Gear (A) (HI), Rack Assembly
Install the Rack Assembly so that the first tooth on the
gear of the Rack Assembly meets the first groove on
the Cam Gear (A) (HI) as shown in Fig. AL3.
Alignment 2
Top View
Fig. AL1
2-5-1
Triangle Marks
Cam Gear (A)(HI)
First groove
Gear on Rack Assembly
on the Cam Gear (A)(HI)
Loading Arm
(SP) Assembly
Last Tooth
Alignment 2
Most inside teeth
of Mode Gear
Mode Gear
Fig. AL2
Alignment 3
First tooth
Fig. AL3
U29PHSAPM