Pfaff hobby GrandQuilter 1200 User manual

hobby GrandQuilter
1200
104 22 54-96
Ver: 27 Aug 2009
© 2009 VSM Group AB - All Rights Reserved.

2 104 72 63-26
Contents
Foreword .......................................................................................................................................3
Replacing the External Parts.........................................................................................................4
Face Plate .....................................................................................................................................4
Top Cover......................................................................................................................................4
Belt Cover......................................................................................................................................5
Motor Cover...................................................................................................................................5
Base ..............................................................................................................................................5
Adjustment of the needle bar height..............................................................................................6
Adjustment of the timing of the hook in relation to the needle.......................................................8
Adjustment of the clearance between needle and point of hook...................................................9
Adjustment of bobbin case position finger...................................................................................10
Adjustment of the presser bar height and alignment...................................................................11
Adjustment of the knee lifter lever...............................................................................................12
Adjustment of the Feed Cam Timing...........................................................................................13
Adjustment of the Feed Lifting Cam Timing................................................................................14
Adjustment of the parallelism and lengthwise movement of the Feed Dog ................................16
Adjustment of synchronizer.........................................................................................................17
Adjustment of bobbin thread tension...........................................................................................18
Adjustment of pre-tension dial.....................................................................................................18
Adjustment of thread check spring stroke ...................................................................................19
Replace and Adjust the Thread Guide Plate ...............................................................................20
Adjustment of the Fixed Cutter Knife...........................................................................................21
Adjustment of the needle to cutter cam timing............................................................................24
Adjustment of the thread drawing lever.......................................................................................25
Adjustment of the auto tension release.......................................................................................26
Thread Cutter Troubleshooting....................................................................................................27
Adjustment of bobbin winder stopper..........................................................................................28
Replacing the Electronic Components ........................................................................................29
Location of the Electronic Components.......................................................................................29
Location of the Connectors..........................................................................................................29
Internal Wiring .............................................................................................................................30
Replace the Circuit Board-A........................................................................................................31
Replace the Circuit Board-F and Slide Volume...........................................................................32
Replace the Light Bulb ................................................................................................................32
Replace the motor and Adjust the motor belt tension..................................................................34
Replace the transformer..............................................................................................................35
Replace the Machine Socket.......................................................................................................35

104 72 63-26 3
Foreword
The purpose of this service manual is to assist you in quick and correct repairing of the machines.
Adjustments should only be made if the settings deviate from the requirements described herein.
When checking or adjusting a machine, always proceed in the order of the work steps prescribed.
For easier reference every work step is marked with a dot.
When assembling dismantled machines, adjust the machine to approximately the right settings.
This facilitates the subsequent fine adjustments.
Unless otherwise specified, the hand wheel must always be turned forward.
When carrying out maintenance work on live parts or in their proximity, the machine is to be separated
from the power supply by unplugging the lead cord from the electrical socket.
For the proper adjustment of the machine, the following gauges and tools are required:
1,5 mm Allen key 07-433 005-28/000
2 mm Allen key 07-433 005-30/000
2.5 mm Allen key 07-433 005-40/000
Phillips Size 0 - small 07-434 001-15/000
Phillips Size 1 - medium 07-434 001-18/000
Phillips Size 2 - big 07-434 001-20/000
Subject to alterations in design and dimensions.

(A)
(B)
(E)
(H)
(C)
(C)
(G)
(D) (D)
(D)
4 104 72 63-26
Replacing the External Parts
Face Plate
Remove the setscrew (4 x 10) (A) and washer (B).
Remove the face plate (G).
Top Cover
Remove the caps (C) and setscrews (4 x 25) (D).
Lift the top cover (E) and pull out the motor connector (H).

(A)
(B)
(D)
(C)
(A)
(C)
(F) (D)
(E)
(A)
(A)
(A)
(A)
(B)
(C)
(D)
(E)
104 72 63-26 5
Belt Cover
• Remove the 3 setscrews (4 x 12) (C) and remove the belt cover (D).
Pull out the socket connector from the printed circuit board UD connector .
NOTE: When attaching the belt cover, engage the hooks with the motor cover.
Motor Cover
• Remove the Belt cover (D) first
• Remove the 3 setscrews (4 x 12) (A) and remove the motor cover.
Base
Remove the 4 hinge screws (A), washers (B), rubber feet (C) and base washers (D).
Remove the base (E)
To attach, follow the above procedures in reverse.