Yamaha Ysp1 Service Manual

							YSP-1
21
YSP-1
• Starting DIAG
To activate the DIAG function, press the “STANDBY/ON”
key of the remote controller while pressing the keys of the
main unit as shown below at the same time.
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YSP-1
Cause: The voltage in the power supply section is
abnormal.
Supplementary information: The abnormal voltage is
displayed in % based on 3.3V as 100%.
Turning on the power without correcting the abnormality
will cause the protection function to work 1 second later
and the power supply will be shut off.
When there is a history of protection 
function due to abnormal voltage in 
the power supply section
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Voltage display in %
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							YSP-1
23
YSP-1
• Display during menu operation
During the DIAG operation, the menu list described in the
section of the startup screen appears on the
superimposed screen and the function at work is indicated
on the FL indicator. The contents displayed during the
function operation are described in the later section on
details of functions.
•Operation procedure of DIAG menu and
SUB-MENU
There are 14 MENU items, each of which has some SUB-
MENU items.
DIAG menu selection
Select the DIAG menu by using the UP/DOWN 
(Reverse)  (Forward) key of the remote controller.
SUB-MENU selection
Select the DIAG sub-menu by using the LEFT/RIGHT 
(Reverse)  (Forward) keys.
• History of protection function
When the protection function has worked, its history is
stored in memory with a backup. Even if no abnormality
is noted while servicing the unit, an abnormality which
has occurred previously can be defined as long as the
backup data has been stored.
The history of the protection function is cleared when
DIAG is cancelled by selecting PRESET RESERVED
(Memory initialized) of DIAG menu No. 6 or when the
backup data is erased.
*To clear the protection history only, use the SUB menu
No.3 PROTECT His (PrHist 
						

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24
YSP-1
• Functions in DIAG mode
In addition to the DIAG menu items, functions as listed
below are available.
•Input selection
•Muting
•Night
•Power on/off
•Master volume
* Functions related to the set menu are not available.
• Initial settings used to start DIAG
The following initial settings are used when starting DIAG.
When DIAG is canceled, these settings are restored to
those before starting DIAG.
• Master volume: -40dB
• Input: TV
• Effect level: 0dB
• Audio mute: OFF
• DIAG menu: DSP THR ALL
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YSP-1
DSP THR FRONT L
•FRONT L output without the head margin is provided in
digital full bit.
•The SWFR signal is output but not in digital full bit.%41
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30/5
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YSP-1
DSP THR SURROUND R
•SURROUND R output without the head margin is
provided in digital full bit.
•The SWFR signal is output but not in digital full bit.%41
5)3
463306/%
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27
YSP-1
2. PRO LOGIC / NEO6
PRO LOGIC I, II, Neo:6 can be selected from the SUB
menu items.
PRO LOGIC II
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Initial display
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¯ÔAll segments OFF

¶·¬ÝïÄ	«nAll segments ON (dimmer 100%)

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All segments ON (dimmer 50%)

¶·¬ÝïÄ:n¢ÃŸÚ”£ Lighting of segments 
in lattice
·¬ÝïĨ 	Ý:n Lighting in lattice
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Normal

Y	× Short
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Segment conditions of the FL driver and the FL tube are
checked by turning ON and OFF all segments. Next,
the operation of the FL driver is checked by using the
dimmer control. Then a short between segments next
to each other is checked by turning ON and OFF all
segments alternately (in lattice). (In the above example,
the segments in the second row from the top are
shorted.)
3. EFFECT OFF / DISPLAY CHECK
This program is used to check the FL display section.
The display condition varies as shown below according
to the sub-menu operation. The signals are processed
using EFFECT OFF (The L/R signal is output using
ANALOG MAIN BYPASS.)
The video signal internal/external synchronization
switching is controlled by the microprocessor. When
the initial message is displayed and all the FL segments
light up, it is switched to the internal synchronization but
other than that it is forced to the external
synchronization setting.
Also, when all segments are turned on, 128 pictographs
for checking the OSD driver are output on the monitor
screen.


						

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HARD FLOW
This sub-menu is used to check operation of the flow port
of the hardware. “OK” appears when the check result is
satisfactory and “NG” when it is not.)BSE
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							YSP-1
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YSP-16. FACTORY PRESET
This menu is used to reserve and inhibit initialization of
the back-up RAM. The signals are processed using
EFFECT OFF. (The L/R signal is output using ANALOG
MAIN BYPASS.)
PRESET INHIBIT (Initialization inhibited) / 13&4&5
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RAM initialization is not executed. Select this sub-menu to protect the values set by the
user.
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