Brother International S-7200B Service Manual - Page 53

S-7200B

8. APPLYING GREASE (-[]3[], []5[] specifications)

46

8-2. When using the control box panel

DANGER

Wait at least 5 minutes after turning off the power switch and disconnecting the power cord from the wall

outlet before opening the face plate of the control box. Touching areas where high voltages are present can

result in severe injury.

If “GU” flashes in the stitch number display (1) on the control box panel when the power switch is turned on, it indicates that it

is time for grease to be applied.

(The sewing machine will not operate at this time, even if the treadle is depressed.)

Apply grease as required, while referring to the following for details.

<To continue sewing without applying grease>

1. Press the start backtack key (3).

2. The “GU” in the stitch number display (1) will stop flashing and disappear, and sewing will be possible when the treadle is

depressed.

(The power indicator (2) will flash.)

NOTE:

・

“GU” will appear each time the power is turned on until you apply grease and reset the notification by carrying out the

reset procedure on the following page.

・

If you continue to use the sewing machine after the “GU” notification appears without applying grease (or without

carrying out the reset procedure), “-0” will appear in the stitch number display (1) after a certain period of time and the

sewing machine will be forcibly prevented from operating for safety reasons.

If this happens, apply grease and carry out the reset procedure.

*

If you continue to use the sewing machine after carrying out the reset procedure but without applying grease,

problems with the sewing machine may result.

<Applying grease>

Use Brother-specified <GREASE (SA7300-001)>.

Using the tube

3682M

3704M

Section	Page
SAFETY INSTRUCTIONS	3
[1] Safety indications and their meanings	3
[2] Notes on safety	4
[3] Warning labels	6
1. MACHINE SPECIFICATIONS	8
2. NOTES ON HANDLING	9
3. FUNCTION SETTINGS (OPERATION PANEL)	10
3-1. Maximum sewing speed and start backtack sewing speed setting methods	10
3-2. Using the LOCK key	11
3-3. Setting the DIP switches	11
3-4. Setting functions	12
3-5. Function List	13
3-6. Clearing saved data (Initialization)	28
4. INITIALIZING THE CONTROL BOX PANEL	29
5. ADJUSTING THE ROTARY HOOK LUBRICATION　AMOUNT (-[]0[], []3[] specifications)	30
6. ADJUSTMENTS	31
6-1. Adjusting the actuator position	31
6-2. Adjusting the safety switch position	32
6-3. Adjusting the thread take-up spring	33
6-4. Adjusting arm thread guide R	34
6-5. Adjusting the presser foot height	34
6-6. Adjusting of the feed dog height	35
6-7. Adjusting the feed dog angle	36
6-8. Adjusting the needle bar height	37
6-9. Adjusting the needle and feed mechanism timing	37
6-10. Adjusting the needle and rotary hook timing	38
6-11. Adjusting the thread trimming timing	39
6-12. Adjusting the thread take-up amount (-[][]3 specifications)	40
6-13. Adjusting the needle up stop position (When using the operation panel)	41
6-14. Setting the needle up stop position and needle down stop position (If using the control box panel)	42
6-15. Adjusting the treadle	44
6-16. Adjusting the presser foot floating amount (minute lifting amount)	44
7. REPLACING PARTS	45
7-1. Fixed knife	45
7-2. Movable knife	45
7-3. Motor and timing belt	46
7-4. Rotary hook RP	49
7-5. Feed bar shaft, Lifting feed shaft	50
8. APPLYING GREASE (-[]3[], []5[] specifications)	51
8-1. When using the operation panel	51
8-2. When using the control box panel	53
9. CONTROL SYSTEM	55
10. CONTROL BOX AND MOTOR	56
10-1. Removing and installing the control box	56
10-2. Control box and motor rating plate	57
10-3. Control circuit board	59
10-4. Checking the motor and power supply	61
10-5. Checking the solenoids	62
11. TREADLE UNIT ASSEMBLY	63
11-1. Types	63
11-2. Standard setting values	64
11-3. Setting method for standard depression strokes	65
12. STANDING OPERATION PEDAL	69
12-1. Installing the foot plug	69
12-2. Connectors	70
13. TROUBLESHOOTING	71
13-1. Sewing	71
13-2. Error code displays	76

Brother International S-7200B Service Manual - Page 53

When using the control box panel, <Applying grease&gt

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