3 - Clock PCB assembly

Tony
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Re: Clock PCB assembly

Post by Tony »

Fit the mustard/beige resin dipped 22p (marked 220) capacitors x2 in locations marked for C7 and C8:

**Batch2 kits will be marked 33 (not 333, note only 2 digits)

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Tony
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Posts: 951
Joined: Tue Jul 24, 2012 8:05 pm

Re: Clock PCB assembly

Post by Tony »

Fit the aluminium can 2.2u 200/250V capacitor in the location marked for C10 as shown - the white bar on the side of the capacitor indicates the negative- terminal and faces to the TOP:

***BATCH3 Blue label kits, it may be a 3.3u 200V***

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Tony
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Posts: 951
Joined: Tue Jul 24, 2012 8:05 pm

Re: Clock PCB assembly

Post by Tony »

Fit the blue or black aluminium can 470u 10V/16V capacitor in the location marked for C5 as shown: NOTE this is polarised, the negative- terminal is marked with a white band.

***BATCH3 Blue label kits may be 330u and green***

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Tony
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Joined: Tue Jul 24, 2012 8:05 pm

Re: Clock PCB assembly

Post by Tony »

Fit the green resin 4n7 capacitor in the location marked for C3 as shown:

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Tony
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Joined: Tue Jul 24, 2012 8:05 pm

Re: Clock PCB assembly

Post by Tony »

Reserved.
Tony
Site Admin
Posts: 951
Joined: Tue Jul 24, 2012 8:05 pm

Re: Clock PCB assembly

Post by Tony »

Fit the remaining black plastic transistor marked 'MPSA42' 'A42' or 'KSP42' in the location marked for T11 as shown: NOTE this are polarised and must be fitted the right way round. There is a flat mark on one side of the body, this flat side faces to the RIGHT of the PCB when viewed as shown in the photograph.

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Tony
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Joined: Tue Jul 24, 2012 8:05 pm

Re: Clock PCB assembly

Post by Tony »

That's BAG1 finished for now, next fit the IC sockets from BAG2:

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Tony
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Posts: 951
Joined: Tue Jul 24, 2012 8:05 pm

Re: Clock PCB assembly

Post by Tony »

Fit T12 (the square black plastic 3 legged part), bending the end 3mm of its legs down 90 degrees to fit in the holes. Make sure it lies flat on the PCB and solder the tab on the top first, then the three legs. Some versions may have the centre leg missing, don't worry just solder the 2 outer legs and the tab.

DON'T FORGET TO SOLDER THE TAB! it acts as a heatsink connection to the PCB.

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Tony
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Posts: 951
Joined: Tue Jul 24, 2012 8:05 pm

Re: Clock PCB assembly

Post by Tony »

Fit the first plastic IR LED in the space marked D1 as shown. NOTE this is polarised and must be fitted the right way round. There is a flat mark on the side of the LED body,

The flat side (Short leg) faces to the LEFT (LED8) and BOTTOM (LED7) of the PCB when viewed as shown in the photograph.

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Tony
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Posts: 951
Joined: Tue Jul 24, 2012 8:05 pm

Re: Clock PCB assembly

Post by Tony »

Fit IC3 as shown (the domed silver plastic 3 legged block). IC3 is vertical and faces to the left.

***For Batch2 and later boards it may be black plastic or silver but packed in 'BAG1' to avoid confusion with IC4. It will be marked VS1838 or TL1838.

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