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Looking for Apt Holman preamp service manual
Looking for Apt Holman preamp service manual
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Old 15th September 2021, 04:00 AM   #11
elwood625 is offline elwood625  United States
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I have a flat screen black and white scanner which outputs a pdf file, I'll try it and the camera tomorrow to see which is best.
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Old 16th September 2021, 01:35 PM   #12
elwood625 is offline elwood625  United States
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I'm not able to use the flat screen scanner as the preamp has stick on feet holding the corners of the schematic. I tried to take photos, the schematic is printed on gloss paper so lighting is tricky, and to get the fine detail, I have to use a Macro lens which will require three photos of the schematic in sections.
I want to do this right so it could take me some time.
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Old 16th September 2021, 02:27 PM   #13
Davey is offline Davey  United States
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Does this help???

Dave.
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Old 16th September 2021, 02:28 PM   #14
Davey is offline Davey  United States
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Does this help??

Dave.
Attached Files
File Type: pdf hfe_apt_corporation_holman_schematic.pdf (4.42 MB, 22 views)
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Old 16th September 2021, 03:46 PM   #15
rif is offline rif  United States
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Looking for Apt Holman preamp service manual
Quote:
Originally Posted by Davey View Post
Does this help??

Dave.
Wow! Where did you get this? This is by far the best one.

I've been using R83 and R183 (330ohm each, after the relay) on all schematics as a reference. All are blurry when enlarging to the point of illegibility. You have to know what they are in order to read the schematic.

This version is clear!

On an odd note, in the manual the text at the bottom is split into sections. On your schematic, it's all in 1 unbroken text block. It's almost as if the manual has been doctored!
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Old 16th September 2021, 04:03 PM   #16
Davey is offline Davey  United States
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APT Corporation Holman Stereo Pre Amplifier Manual | HiFi Engine

Dave.
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Old 16th September 2021, 04:45 PM   #17
elwood625 is offline elwood625  United States
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That is as good or better than anything my camera will produce.
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