Heathkit HD 1780 Schematic

Page 1

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. ZZOOHM FOR HDH-GOO ROTATOR
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CHASSIS :l 57 I _____ j
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\ "7,. am an -/ m, . 1 Schematic of the
\ l , I I 3:: 5A B IZBVAC - 2A se I _ 0
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§ ' 33 W Z Z" I I IntelliRotor"
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\ | I 7 1 All I .le qzv DCND :I MOdeI HD/HDW1780
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m m, m -iIi ' ' . NOTES:
417-955 zzeuc HIRING I I
- C55 | i 1. All resistors are ratedat1/4-watt and haveatolerance of 5% unless
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P502 g; Sosa: : IE} I othenmse noted. Resistorvaiues are in ohms (k-1 000: M-1,000.000).
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1 S /- cnunm mu: 3 S mum Po, 3 c rm 2. Capacltorvaiues are InuF(mIcrotarads) unless marked pF (pIoofar-
\- S \ 3 IZBVAC = .i25lI/Bi so ads)
2 G 1 ® DC CNfl zaflVAC = ZN/Isl SB
1 _ 3. $ This symbol indicates circuit board ground
4 '- ' -iit-JH-m-CZP-I
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S «7' i 33:2 I cmss's 4. Parts In the shaded areas are critical tor continued product satety.
4 8 S 1 mm . - Replace them only with parts of the same rating or with the proper
ROTAT on S u L _______ j Heath parts.
5 "DIOR C
S 5. Rater to the 'X-Ray Views'ior the locations oi the parts on the circuit
6 6 ® FIDVDR ccu 3| 220m: ammo boards
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® 1 S L' Copyright c 1989
8 AC an Heath Company
®' ® All Rights Reserved
Part 0159543123 Printed in Hong Kong