Yamaha AO8-DA8 Service Manual download pdf (Page 28)

* FS Line Check

3-2. AO8-SLOT [Clock Line] Test

Fs 00000000

64Fs 00000000

256Fs 00000000

NG example

FS Line Check:

Now Checking …

FS Check 256Fs

3-2. AO8-SLOT [Clock Line] Test

NGFS Line Check:

NGSLOT4

-> xx.xxx kHz

64Fs

256Fs

-> xx.xxx kHzX64

-> xx.xxx kHzX256

NGSLOT6

256Fs

-> xx.xxx kHzX256

(-xx.x%)

(+xx.x%)

(-xx.x%)

NG* FS Line Check

Fs 00010000

64Fs 00010000

256Fs 00010100

The detected FS frequency is displayed

and the percentage deviation from the

ideal state is displayed.

The values for 64 Fs and 256 Fs are

displayed in such a way that they can be

easily grasped.

Basically, the same as up till here

* Data Bus Test

* Voltage Check

* Address Bus Test 00000000

00000000

+15V

00000000

-15V

00000000

+5V

00000000

-5V

+20V

* /CON Line Test 00000000 OK

3-1. AO8-SLOT [Initial] Test OK

3-1. AO8-SLOT [Initial] Test

Data Bus Test: OK

Voltage Check: OK

/CON Line Test: OK

NG example

Address Bus Test:

Now Checking …

/CON Line Test

3-1. AO8-SLOT [Initial] Test

NGAddress Bus Test:

NGSLOT6 11111111 11111111

NGData Bus Test:

NGSLOT4

NGSLOT6

11111111 11111111

NGVoltage Check:

NGSLOT4

+20V => +xx.xxV

+15V => +xx.xxV

(-xx.x%)

(+xx.x%)

NGSLOT6

-5V => +xx.xxV (-xx.x%)

NG/CON Line Test: 00010100

* Data Bus Test

* Voltage Check

* Address Bus Test 00000100

00010100

00010000

+15V

00000000

-15V

00000000

+5V

00000100

-5V

+20V

* /CON Line Test 00010100 NG

3-1. AO8 - Slot [Initial] Test

Checks slot operation by checking the minimum necessary number of pins.

Stopped the moment an actual Addr.BusTest

or DataBusTest NG appears.

The results for each slot are displayed in order from the left. A mark is made

for each check to show the progress of the checks.

(Blank: Not yet checked; 0: Normal; 1: Abnormal; N: No response)

Shows which pin is NG;

display for 16 pins.

(1: NG; 0: OK)

First, all the voltages for one slot are

checked, then this is repeated for the

next slot. (The notation is each

voltage [x 8 slots], but the check

order is each slot [x all voltages].)

The detected voltage is displayed and the

percentage deviation from the ideal state

is displayed. This is shown for each slot.

Basically, the same as up till here

3-2. AO8 - Slot [Clock Line] Test

This test checks around the slot clock.

* Digital Signal line Test

3-3. AO8-SLOT [Data Line] Test

SI 00000000

NG example

Digital Signal Line Test:

Now Checking …

SI Test

3-3. AO8-SLOT [Data Line] Test

NGDigital Signal Line Test:

NGSLOT4

SI [a7,b7 pin]

NG* Digital Signal line Test

SI 00010000

Basically, the same as up till here

3-3. AO8 - Slot [Data Line] Test

This test checks around the serial communications.

The ID change jig digital line

change is on the rear.

AO8

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Yamaha AO8-DA8 Service Manual Page 28

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