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LED Speed Displays





These were implemented by makers in many ways.
Below are some examples.

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DP-524

Type: LED drive from motherboard  (see top half of diagram here)

Click here for the maker's diagram.

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F-502

See S-501

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GK-01

Type: Turbo switch  (see bottom half of diagram here)

Click here for a diagram.
Click here for a photo.

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G-568

Type: Turbo switch  (see bottom half of diagram here)

Click here for the maker's diagram.

(Document sourced from member njroadfan of the VCFF.)

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GT-569

Type: Turbo switch  (see bottom half of diagram here)

Click here for the maker's diagram.

NOTE: This appears to be a K-568 without the 'power LED' functionality.
NOTE: In the example, the H2 jumper is on the wrong pins. Refer to the K-568 diagram to see the correct jumper position.

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K-568

Type: Turbo switch  (see bottom half of diagram here)

Click here for the maker's diagram.	(Document sourced from member njroadfan of the VCFF.)
Click here for an alternate diagram.
Click here for a photo.

NOTE: This appears to be a GT-569 with 'power LED' functionality added.

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K-569

Type: Turbo switch  (see bottom half of diagram here)

Click here for the maker's diagram.

(Document sourced from member njroadfan of the VCFF.)

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S-305 and S-305H

Type: Turbo switch  (see bottom half of diagram here)

Two maker's diagrams available:

Click here for maker's diagram # 1.	(Document sourced from member vanderk of the VCFF.)
Click here for maker's diagram # 2.	(Document sourced from member njroadfan of the VCFF.)

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S-501 and F-502

Type: ??????

Click here for a diagram.
Click here for a photo.

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SB-019

Type: LED drive from motherboard  (see top half of diagram here)

Click here for the maker's diagram.

(Document sourced from member bburley of the VCFF.)

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SD-402

Type: LED drive from motherboard  (see top half of diagram here)

Click here for the maker's diagram.

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SD-403

Type: LED drive from motherboard  (see top half of diagram here)

Click here for the maker's diagram.

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SFI-501

Type: LED drive from motherboard  (see top half of diagram here)

Click here for the maker's diagram.

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SFI-802

Type: LED drive from motherboard  (see top half of diagram here)

Click here for the maker's diagram.

(Document sourced from member bburley of the VCFF.)

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SK-188

Type: Turbo switch  (see bottom half of diagram here)

Click here for a diagram.
Click here for a photo.

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ST-6A

Type: Turbo switch  (see bottom half of diagram here)

Click here for a diagram.
Click here for a photo.

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TD-37H

Type: LED drive from motherboard  (see top half of diagram here)

Click here for the maker's diagram.

(Document sourced from member P-man of the VCFF.)

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TD-37S

Type: Turbo switch  (see bottom half of diagram here)

Click here for the maker's diagram.

(Document sourced from member bburley of the VCFF.)

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TD-38H

Type: LED drive from motherboard  (see top half of diagram here)

Click here for the maker's diagram.

(Document sourced from member P-man of the VCFF.)

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TD-38S

Type: Turbo switch  (see bottom half of diagram here)

Click here for maker's diagram # 1.	(Document sourced from member P-man of the VCFF.)
Click here for maker's diagram # 2.	(Document sourced from member bburley of the VCFF.)
Click here for an alternate diagram.	(Diagram created from information provided by member P-man of the VCFF)

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TD-403

Type: Turbo switch  (see bottom half of diagram here)

Click here for the maker's diagram.

(Document sourced from member bburley of the VCFF.)

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TD-503

Type: Turbo switch  (see bottom half of diagram here)

Click here for the maker's diagram.

(Document sourced from member bburley of the VCFF.)

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YY-1300105 / YY-1300106

Click here for instructions that are known to work with this unit.       (Information sourced from member liqmat of the VCFF)
Click here for a photo.

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Unknown #1

Type: LED drive from motherboard  (see top half of diagram here)

Click here for the maker's diagram.

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Unknown #2



A chip (beneath the white substance) lights the LED elements, based on the jumper settings.

One jumper per row.
Top jumper row controls TURBO display, bottom jumper row controls NON-TURBO display.
On each row, move the position of the jumper to get the desired speed readout (e.g. 08/10/12/16 ...)

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Unknown #3

Type: Turbo switch  (see bottom half of diagram here)

Click here for a diagram.       (Diagram created from information provided by member Aitotat of the VCFF)

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Unknown #4

Type: LED drive from motherboard  (see top half of diagram here)

See here.

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Unknown #5

Type: Turbo switch  (see bottom half of diagram here)

Click here for the maker's diagram (2 pages).

(Document sourced from member bburley of the VCFF.)

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