Service Check; Common Contents; Service Check Connection Diagram; Pllp2 Test - Yamaha DM1000 Service Manual

DM1000/MB1000/SP1000

1. Service Check

Common contents:

1) The contents of the Service Check Program and
examples of the screens executed for each check
item are displayed.
Common preparations:
1) Check objectives: DM1000 and MB1000
2) Cables:
3) DM1000 starting method:
While pressing the [AUX SELECT DISPLAY] and
[AUX4] keys, turn the power ON.
During normal operation, press the [SEL] key in the
CH "6 7 1 1" order and press the [STORE] key to
display the dialog box for confirmation. Select Yes
and press the [ENTER] key to restart the DM1000 in
the service check mode.

Service Check Connection Diagram

DM1000
2TR IN DIGITAL1
2TR IN DIGITAL2
2TR OUT DIGITAL1
2TR OUT DIGITAL2
WORD CLOCK IN
WORD CLOCK OUT
TO HOST-USB
MIDI IN (MTC IN)
SLOT1
SLOT2
116
MIDI cable: 1
CANNON cable: 1
COAXIAL cable: 1
BNC cable: 1
MIDI OUT
REMOTE
SMPTE IN
CONTROL
MB1000
METER

1-1.PLLP2 test

Contents: Read/Write the Reg. (00, 0f, 10, 16) of the
PLLP2 to compare and check.
Example of execution screen
--- PLLP2 ---
NG Adrs,Data BUS
EXIT ([DEC] Key->[ENTER] Key)
1-2. Battery test
Contents: The voltage of the backup battery by A/D
is measured and judgment is automatic.
Example of execution screen
--- BATT ---
NG BATT
NG:BATT (2.56V)
EXIT ([DEC Key]->[ENTER Key])
1-4. DSP6 and SIO tests
1-5. DSP7, SIO, and ATSC2 tests
Contents: Read/Write the register of each DSP6 and
DSP7 and check whether the Data Bus and
Address Bus are good or bad.
Read/Write the DRAM and SDRAM of each
DSP6 and DSP7 via the registers and
compare and check.
Check the SIO connection between each
DSP and between the ATSC by the Send/
Receive signal.
Example of execution screen
Certified voltage range
2.80 V to 3.50 V
Below 0.5 V is NG:
BATT NONE
All items are selected
automatically and cannot
be selected manually.
Items are displayed one
after another after "1:"
during execution.
Details are displayed when
NG is determined.
When there are many NG
items, the display stops
after about 20 items.