DVD 23 (serv.man10) - Harman Kardon Audio Service Manual (repair manual). Page 37

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1.0

1. INITIAL VERSION

April 30,

2005

1.1

Aug 31,

2005

1. C113 C114 were changed from 33p to 3300p
2. R65 was changed from 0R to 10k, D21/D22 were added parallel to C94/C97,

EC18/EC19 were changed from 47uF/16V to 1uF/16V for avoiding burning OPU,

change some points S5V to RF5V, add EC25 for RF5V.

3. add C329 C330 R358-R363 for ADA4410 DC off-set circuit.
4. add L301-L303 C331-C339 for video buffer.

1.2

Sept 14,

2005

1. change R150 from 33R to 150R in case of make noise on AMCLK
2. change R204-R219, R224-R227 to RN6-RN9, RN11
3. re-arrange the pins of CN2
4. add C137-C142 and R1 for motor driver as a option.
5. add R7 R8-R12 R99 R100 U5, delete Q11 for MCU-OFF.
6. add R364-R381 EC313-EC315 Q310-Q312, N/A C331-C339

L301-L303 R332 R343, for adjusting the video performance.

7. delete FB301 and add U307 EC323 C340 for improving the audio performance.
8. change R307 R320 from 4.7k to 4.75k 1%, R308 R321 from 7.5k 1% to 4.75k

1% to decrease the output level from 2.5V to 2V.

9. FB304 change to N/A, add R383 U309 EC328 EC329 C341 C342 for creating VIDEO 5V from 12V.
10. D301 change to N/A, add R382 for MCU-MUTE.
11. add U310 U311 EC324-EC327 as option in case of using DVD22 SMPS.
12. EC18 EC19 change from 1uF to 47uF, R304 R312 change from 650R to 680R.
13. change R51 from 3.9K to 39K, R53 from 3.3k to 33k, C88 from 473 to 472,

C90 from 472 to 470p.

14. change R364 from 75R to 68K, R19 from 200R to 220R.
15. EC315 change from 220uF/10V to 1500uF/6.3V in

case of losting the synchronous signal in PY channel.

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DVD23 REVISION HISTORY        051027

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Saturday, January 14, 2006

Title

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Document Number

Rev

Date:

Sheet

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harman/kardon

Service manual DVD23EU

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