Yamaha RX-V671 Service Manual page 45

U1. iPod
This menu is used to check the DOCK jack/iPod authentication IC without connecting the iPod itself.
U1-1. DOCK CHECK
With the power turned off, short the pins of the DOCK jack as shown in the figure below.
Start up the self-diagnostic function and select this menu.
The check result is displayed according to the following display specifications.
Note) Be sure to return the shorted pins to their original condition after executing this test.
15 16
9 10 11
3 4 5
1 19
DOCK jack
Shorted pins
14 – 18 UART loop back test
1 – 17
DK1_AP (iPod accessory power) detection
(5.6 k-ohms, 1/4W)
4 – 8 DK1_N_IPDET (iPod installation to DOCK) detection
8 – 21
DK1_ID (DOCK ID) detection
(10 k-ohms, 1/4W)
17 18
12 13 14
6 7 8
20 21 2
Check item
RX-V671/HTR-6064/RX-A710
All Y = "OK"
Others = "NG"
Result
OK
NG
High = YES
IC81
pin No. 79
Low = No
Low = installed
IC81
pin No. 42
High = not installed
10 k-ohms, 1/4 W pull down
IC89
pin No. 13
Other
Display
⎫
Y
⎬
⎭
N
⎫
Y
⎬
⎭
N
⎫
Y
⎬
⎭
N
⎫
Y
⎬
⎭
N
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