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18
harman/kardon
Service Bulletin
Service bulletin # H/K2001-03 Rev1 January 2003
Warranty labor rate: MAJOR repair
To: All harman/kardon Service Centers
Models: AVR110/210/310/510
Subject: No Output In Surround Mode
In the event you receive an AVR110,210,310, or 510 A/V receiver with the complaint: “The receiver has no
output when any surround mode is chosen, when using any input, digital or analog.”, check the item below
for a possible solution:
Probable Cause:
Defective IC4 EEPROM AT27LV020 on the DSP board.
Solution:
Replace IC4 (called IC04 in the parts list) following these instructions:
1) Remove the top cover, (14) Black Phillips screws at the sides and rear of the unit.
2) Locate the DSP PC Board; Figure 1. Remove the metal brace at the top of the unit.
3) Pull the white 21 conductor ribbon cable at the rear of the DSP PC Board straight out of its receptacle.
4) Unplug the multicolor 5 conductor molex cable at the top of the DSP PC Board.
5) Remove the (33) black Phillips screws on the left side of the rear backplate; see Figure 2. Do not remove any
additional screws on the right side. Remove all three black plastic plugs that cover the optical inputs at the rear
of the DSP PC Board.
6) Pull on the left side of the rear backplate, away from the receiver chassis; you should be able to pull it away
enough to allow the DSP PC Board to be pulled straight up and out of the receiver. If necessary, cut any
additional cable ties that would prevent removal of the DSP board.
7) Replace IC4 (called IC04 in the parts list); obtain part number from chart below.
Caution: IC4 is an
electrostatically sensitive device and can be damaged by careless handling; you must follow proper static
control procedures to prevent damage to the IC.
8) Replace DSP PC Board and follow the above procedures in reverse order. Screws: If using a power tool, use
care and minimum effort to avoid damaging the various plastic receptacles.
9)
Test unit to assure original problem has been corrected.
AVR110
IC4 or IC04
h/k part#
55172540AVR110
AVR210
IC4 or IC04
h/k part#
55172540AVR210
AVR310
IC4 or IC04
h/k part#
55172540AVR310
AVR510
IC4 or IC04
h/k part#
55172540AVR510
AVR210
harman/kardon
All manuals and user guides at all-guides.com
Содержание AVR 210
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