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Updated LCD control module
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pcs
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Post Updated LCD control module Reply with quote
http://www.pcs-electronics.com/software/Manuals/LCDModules/manual_LCDv40_en.pdf

This update affects all products using LCD display. It is more of a cosmetic fix than anything else, but the
manual was updated as well to make it more user-friendly. The tips section should be helpful for any
"hackers" out there.

Anyone with too much time on their hands willing to translate this into other languages should
contact me (spanish, german, portuguese, dutch would be appreciated).

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Marko - PCS Electronics
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Wed Sep 06, 2006 5:03 pm View user's profile Send private message Visit poster's website
Tarquin
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Post Reply with quote
OK what have you got for me.
I have LCD board v30 5/2006. The R3 on this board is omitted along with RFC1, T1, which is on the output of CD4040 obviously nothing to do with the contrast. As you know pin 3 is used on the the HD 44780 but for me to follow it back, splitting the boards wasn't worth the effort as you can tell me which to change. Also, can I safely lower the 56ohm R1 to increase the back light? P.S Does the Buzzer do anything?

Tarquin
Mon Sep 11, 2006 10:28 am View user's profile Send private message
pcs
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Post Reply with quote
On your board (v30) you need to change R6.

Buzzer buzzes, you can increase volume by lowering R4 to 220 ohms.
Also make sure to remove the sticker on the top of the buzzer.

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Marko - PCS Electronics
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Turn your PC into a FM radio station!
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Mon Sep 11, 2006 11:29 am View user's profile Send private message Visit poster's website
Tarquin
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Post Reply with quote
yes yes I know about the sticker LoL What I mean is what conditions cause the buzzer to buzz? Aa I have never heard it operate . can I safely change the 56ohm to say 33ohm to increase the backlight?
Mon Sep 11, 2006 11:41 am View user's profile Send private message
pcs
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Post Reply with quote
I do not recommend exagerating with backlight, but it should take 33 ohms.
I think its quite visible as it is.

As this LCD modules works with many products I can'b be sure whether
it buzzes in yours. It certainly buzzes in MAX PRO 3 and 4.

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Best regards,
Marko - PCS Electronics
--------------------------------------------------------
Turn your PC into a FM radio station!
http://www.pcs-electronics.com
fax +386 4 2316 128
Mon Sep 11, 2006 12:06 pm View user's profile Send private message Visit poster's website
Tarquin
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Post Reply with quote
Ok I have a maxpro3+ what conditions does it buzz under? Does it mimic the red LED? Does the buzzer sound when the PLL is out of lock, and when the RF is muted etc?
Mon Sep 11, 2006 1:04 pm View user's profile Send private message
pcs
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Post Reply with quote
What's the R4 value?

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Marko - PCS Electronics
--------------------------------------------------------
Turn your PC into a FM radio station!
http://www.pcs-electronics.com
fax +386 4 2316 128
Mon Sep 11, 2006 2:20 pm View user's profile Send private message Visit poster's website
Tarquin
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Post Reply with quote
R4 is 1k. I see from the manual it is marked as 150ohm. When would the buzzer normally sound. can I create the condition to test to see if it works?
Mon Sep 11, 2006 2:25 pm View user's profile Send private message
pcs
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Post Reply with quote
Its buzzing when you use the keys.

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Marko - PCS Electronics
--------------------------------------------------------
Turn your PC into a FM radio station!
http://www.pcs-electronics.com
fax +386 4 2316 128
Mon Sep 11, 2006 3:26 pm View user's profile Send private message Visit poster's website
Tarquin
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Post Reply with quote
ok seperated the two boards and found a dry joint on the buzzer. Resoldered ok
Mon Sep 11, 2006 3:58 pm View user's profile Send private message
pcs
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Post Reply with quote
Glad its buzzing now

Enjoy the new guide and your LCD display.

_________________
Best regards,
Marko - PCS Electronics
--------------------------------------------------------
Turn your PC into a FM radio station!
http://www.pcs-electronics.com
fax +386 4 2316 128
Mon Sep 11, 2006 5:18 pm View user's profile Send private message Visit poster's website
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