Yamaha PSR-E473 User manual

SERVICE MANUAL
PSR-E473
PK 001998 -A0
2022.01 © 2021 Yamaha Corporation.
nCONTENTS
SPECIFICATIONS................................................................................... 3
PANEL LAYOUT ..................................................................................... 5
DISASSEMBLY PROCEDURE ............................................................... 8
Disassembling the keyboard (time required: About 13 minutes)........... 14
BACKUP................................................................................................ 16
INITIALIZATION .................................................................................... 17
INSPECTIONS ...................................................................................... 18
APPENDIX ............................................................................................ 29
CIRCUIT BOARDS................................................................................ 31
BLOCK DIAGRAM
CIRCUIT BOARD LAYOUT WIRING
OVERALL CIRCUIT DIAGRAM
PARTS LIST

PSR-E473
2
1
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IMPORTANT NOTICE
This manual has been provided for the use of authorized Yamaha Retailers and their service personnel. It has been assumed that basic
service procedures inherent to the industry, and more specically Yamaha Products, are already known and understood by the users,
and have therefore not been restated.
WARNING :Failure to follow appropriate service and safety procedures when servicing this product may result in personal injury,
destruction of expensive components and failure of the product to perform as specied. For these reasons, we advise
all Yamaha product owners that all service required should be performed by an authorized Yamaha Retailer or the
appointed service representative.
IMPORTANT :This presentation or sale of this manual to any individual or rm does not constitute authorization certication,
recognition of any applicable technical capabilities, or establish a principal-agent relationship of any form.
The data provided is believed to be accurate and applicable to the unit(s) indicated on the cover. The research engineering, and service
departments of Yamaha are continually striving to improve Yamaha products. Modications are, therefore, inevitable and changesin
specication are subject to change without notice or obligation to retrot. Should any discrepancy appear to exist, please contact the
distributor’s Service Division.
WARNING :Static discharges can destroy expensive components. Discharge any static electricity your body may have accumulated
by grounding yourself tothe ground bus in the unit (heavy gauge black wires connect tothis bus.)
IMPORTANT : Turn the unit OFF during disassembly and parts replacement. Recheck all work before you apply power tothe unit.
WARNING
Components having special characteristics are marked and must be replaced with parts having specication equal to those
originally installed.
Be sure to
perform it
Saving and backing up your data
Some data items are automatically saved as backup data in the internal memory even if you turn the power off. Saved
data may be lost due to malfunction or incorrect operation. Save important data to external device such as a computer.
SAVING DATA
2.SERVICE MANUAL

PSR-E473
3
nSPECIFICATIONS
Product Name Digital Keyboard
Size/Weight
Dimensions (W x D x H) 992 mm × 404 mm × 136 mm
(39-1/16” x 15-7/8” x 5-3/8”)
Weight 7.0 kg (15 lbs., 7 oz.)
(not including batteries)
Control
Interface
Keyboard 16syeKforebmuN
dexiF,draH,muideM,tfoSesnopseRhcuoT
Other
Controllers
seYleehWdneBhctiP
2sbonK
hsilgnEegaugnaLlenaP
Voices
Tone
Generation
Tone Generation
TechnologyAWM Stereo Sampling
46).xam(ynohpyloP
Preset Number of Voices
820
(294 Panel Voices + 28 Drum/SFX kits
+ 40 Arpeggio + 458 XGlite Voices)
etilGX,MGytilibitapmoC
EffectsTypes
21breveR
5surohC
4QEretsaM
DSP DSP1:41
DSP2:12
Accompani-
ment Styles
Preset
092selytSforebmuN
drohCtramS,regnifitluMgniregniF
Style Control ACMP ON/OFF, SYNC START, SYNC STOP, START/STOP,
INTRO/ENDING/rit., MAIN/AUTO FILL, TRACK ON/OFF
01selytSlanretxE
Other
Features
One Touch Setting
(OTS)Yes
)FFS(tamroFeliFelytSytilibitapmoC
Groove
Creator Preset 53sevoorGforebmuN
Number of Sections 5 (4 Sections + 1 Musical Climax/Ending)
Songs
(MIDI)
Preset Number of Preset
Songs30
Recording
01sgnoSforebmuN
)rotaerCevoorG/elytS1+ydoleM5(6skcarTforebmuN
Data Capacity Approx. 19,000 notes (when only “melody” tracks are recorded)
Format )1&0stamroF(FMSkcabyalP
)noitcnufnoisrevnoc0FMS(tamroFeliFlanigirOgnidroceR
USB Audio
Recorder
gnoSrep)BG9.0.xorppa(setunim08).xam(emiTgnidroceR
Format )oerets,tib61,zHk1.
44(VAWkcabyalP
)oerets,tib61,zHk1.44(VAWgnidroceR
Quick
Sampling
pooL,tohsenOepyTgnilpmaS
4)resU/teserP(selpmaS
ces6.9.xorppAemiTgnilpmaS
seliftamrofVAW,ecafretnioiduaBSU,TUPNICIM,NIXUAsecruoSgnilpmaS
)oerets,tib61(tamroFeliFlanigirOtamroFgnilpmaS
zHk1.44etaRgnilpmaS
Functions Voices
seYlauD
seYtilpS
62ynomraH
251oiggeprA
seYnoitalucitrA

PSR-E473
4
Functions
Registration
Memory
)sknab8x(4snottuBforebmuN
ezeerFlortnoC
Overall
Controls
seYemonorteM
082–11egnaRopmeT
21+ot0,0ot21-esopsnarT
)stnemercnizH2.0.xorppa(zH0.354–0.044–0.724gninuT
seYnottuBevatcO
sepyt5epyTelacS
Miscella-
neous
seYnottuBONAIP
seYomeD
seYrosserppuSydoleM
seYedafssorC
oerets,tib61,zHk1.44ecafretnioiduaBSU
75tceffEnoitoM
)Bd6+dna,Bd3+.xorppa(spets2tsooBageM
Storage and
Connectivity
Storage BM27.1.xorppAyromeMlanretnI
evirdhsalfBSUsevirDlanretxE
Connectivity
V21NICD
kcajenohpoeretsdradnatSsenohpdaeH
seYenohporciM
seYladePniatsuS
kcajinimoeretSNIXUA
R,R+L/L:skcajenohpoeretsdradnatSTUPTUO
seYECIVEDOTBSU
seYTSOHOTBSU
Sound
System
W6+W6sreifilpmA
2xmc21srekaepS
Power
Supply
AC Adaptor
PA-150 or an equivalent
recommended by Yamaha
(Output : DC 12V, 1.5 A)
Batteries
Six "AA" size alkaline(LR6),
manganese (R6) or Ni-MH
rechargeable (HR6) batteries
Power Consumption
9 W (When using PA-150 AC adaptor)
seYffOrewoPotuA
Included Accessories
• Owner’s Manual
• AC adaptor* (PA-150 or an equiva-
lent recommended by Yamaha)
* May not be included depending
on your area. Check with your
Yamaha dealer.
• Music Rest
• Online Member Product Registration
Separately Sold Accessories
(May not be available depending on your area.)
• Keyboard Stand: L-2C
• AC adaptor: PA-150 or an equiva-
lent recommended by Yamaha
• Headphones: HPH-150/HPH-100/
HPH-50
• Subwoofer: KS-SW100
• Footswitch: FC4A/FC5
• Wireless MIDI adaptor: UD-BT01

PSR-E473
5
nPANEL LAYOUT
■Front Panel
A D E F G
CB Display
As illustrated, each note of the keyboardhas a specic note numberand name (e.g., 036/C1), which is used in making various
settings, such as Split Point.
A
[ ](Standby/On)switch
[MASTERVOLUME]control
[ARTICULATION]button
About the button names in
(SHIFT function)
While holding down the [SHIFT]button, press the
button to call up the function name in the box.
For example, while holding down the[SHIFT]but-
ton, press the [MIC VOCAL/TALK/MUTE]button
to call up the display.
Press and hold
036
(C1)
048
(C2)
060
(C3)
072
(C4)
084
(C5)
096
(C6)
H
B
[MICVOCAL/TALK/MUTE]button
[MOTIONEFFECT]button
[KNOBASSIGN]button,[A]/[B]knobs
LIVECONTROL
[SPLIT]button
[DUAL]button
[HARMONY/ARPEGGIO]button
SOUNDCONTROL
[DSP2]button
[DEMO]button
[METRONOME]button
[TEMPO/TAP]button
[REC]button
OCTAVE[−][+]buttons
[SHIFT]button
❶
❷
❸
❶❷❸
❻
❺
❾❽
❼ ❿
⓯
⓰
⓮⓭⓬⓫
❹
❿
⓫
⓬
⓭
⓮
⓯
⓰
❹
❺
❻
❼
❽
❾

PSR-E473
6
C
[VOICE]button
[STYLE]buttons
[SONG/AUDIO]buttons
[GROOVECREATOR]buttons
Dial
Category/Numberinputbuttons,[EXIT]button,
[ENTER]button
[FUNCTION]button
[PORTABLEGRAND]button
[MEGABOOST]button
D
Playbackcontrolbuttons
E
[TRACKCONTROL]buttons
F
[REGISTRATIONMEMORY]buttons
⓴ ⓱
󱢿
󱣏 󱣐 󱣑 󱣒 󱣓
󱣀󱢾
⓱
⓲
⓳
⓴
󱢾
󱢿
󱣀
󱣁
󱣂
󱣃〜󱣈
󱣉〜󱣎
󱣃
󱣉 󱣊 󱣋 󱣌 󱣍 󱣎
󱣄 󱣅 󱣆 󱣇 󱣈
󱣁 󱣂
⓳ ⓲
G
[A]−[D]pads
[LOOPHOLD]button
[CAPTURE]button
H
[PITCHBEND]wheel
QUICKSAMPLING
󱣏〜󱣓
󱣔〜󱣗
󱣘
󱣙
󱣚
󱣚
󱣘󱣔 󱣕 󱣖 󱣗 󱣙

PSR-E473
7
󱣛 󱣜 󱣝 󱣞 󱣟 󱣠 󱣡 󱣢 󱣣
■RearPanel
[SUSTAIN]jack
OUTPUT[L/L+R]、[R]jacks
[PHONES]jack
[MICINPUT]jack
[GAIN]knob
[AUXIN]jack
[USBTODEVICE]terminal
[USBTOHOST]terminal
DCINjack
󱣛
󱣜
󱣝
󱣞
󱣠
󱣡
󱣢
󱣣
󱣟

PSR-E473
8
nDISASSEMBLY PROCEDURE
Caution:
▪ Be sure to attach the removed filament tape just as it was before removal.
1. Lower Case Assembly (Time required: About 3 minutes)
1. Remove the 8 screws marked [70], the 6 screws marked [75] and the 5 screws marked [80]. The Lower Case Assembly can
then be removed. (Fig.1)
*When installing the lower case assembly, first tighten the screw marked [75A] and then the remaining screws. (Fig.1)
[75]
[80]
[80]
[75]
[70]
[70]
[70]
[70]
[80]
[80]
[75A]
[75]
[80]
[75]
[75]
[A]
[A]
Bottom view
Top view
BATTERY COVER ASSEMBLY
SP GRILLE R ASSEMBLY
ENCODER KNOB
CONTROL KNOB
VOLUME
SP GRILLE L ASSEMBLY
Fig.1

PSR-E473
9
2. DMLCD Circuit Board (Time required: About 6 minutes)
1. Remove the lower case assembly. (See procedure 1)
2. Remove the 13 screws [380A]. The DMLCD circuit board can then be removed. (Fig.2)
*After replacing the DMLCD circuit board, execute "Factory Reset" in the Test program.
[380I] PB
MVR
[380H] [380D] x14 [380A] x13
[380B] [380B] [380B] [380C] [380C]
[380F] x6[380E] x4 [380G] x3
PNL-B PNR-B
AMPN
DMLCD
JACKKNOB
ENC
Bottom view
Fig.2
3. LCD (Time required: About 7 minutes)
1. Remove the lower case assembly. (See procedure 1)
2. Remove the DMLCD circuit board. (See procedure 2)
3. Remove the back light assembly. (Fig.3)
4. Remove the rubber connector. (Fig.3)
5. Remove the LCD display. (Fig.3)
*Avoid touching the conductive part of the rubber connector as much as possible. Should foreign matter or dirt adhere,
remove such contamination using adhesive tape or the like. Do not wipe off using solvents such as benzene or alcohol.
(Fig.3)
DMLCD
LCD display
BACK LIGHT ASSEMBLY
RUBBER CONNECTOR
Fig.3

PSR-E473
10
4. PNL-B, PNR-B, AMPN, KNOB, JACK and ENC Circuit Board
1. Remove the lower case assembly. (See procedure 1)
l PNL-B Crcuit Board (Time required: About 6 minutes)
1. Remove the 11 screws [380B]. The PNL-B circuit board can then be removed. (Fig.2)
l PNR-B Crcuit Board (Time required: About 6 minutes)
1. Remove the 10 screws [380C]. The PNR-B circuit board can then be removed. (Fig.2)
l AMPN Crcuit Board (Time required: About 7 minutes)
1. Remove the 14 screws [380D]. The AMPN circuit board can then be removed. (Fig.2)
l KNOB Crcuit Board (Time required: About 5 minutes)
1. Remove the 2 control knobs from the control panel surface. (Fig.1)
2. Remove the 4 screws [380E]. The KNOB circuit board can then be removed. (Fig.2)
l JACK Crcuit Board (Time required: About 6 minutes)
1. Remove the 6 screws [380F]. The JACK circuit board can then be removed. (Fig.2)
l ENC Crcuit Board
1. Remove the encoder knob from the control panel surface. (Fig.1 and Fig.4)
2. Remove the 3 screws [380G]. The ENC circuit board can then be removed. (Fig.2)
ENCODER KNOB
Fig.4

PSR-E473
11
5. MVR Crcuit Board, PB Crcuit Board, Wheel Assembly
1. Remove the lower case assembly. (See procedure 1)
l MVR Crcuit Board (Time required: About 3 minutes)
1. Remove the volume knob from the control panel surface. (Fig.1 and Fig.5)
2. Remove the 5 screws [380H]. The MVR circuit board can then be removed. (Fig.2)
l PB Crcuit Board, Wheel assembly (Time required: About 5 minutes)
1. Remove the 2 screws [380I]. The PB circuit board can then be removed. (Fig.2)
2. Pull out and remove the wheel assembly from the PB circuit board. (Fig.6)
VOLUME KNOB
Fig.5
PB
WHEEL ASSEMBLY
Fig.6
6. PNR-T Crcuit Board (Time required: About 6 minutes)
1. Remove the lower case assembly. (See procedure 1)
2. Remove the JACK circuit board. (See procedure 4)
3. Remove the 11 screws [380J]. The PNR-T circuit board can then be removed. (Fig.7)
[380J]
PNR-T
Bottom view
Fig.7

PSR-E473
12
7. Speaker (Time required: About 4 minutes each)
1. Remove the lower case assembly. (See procedure 1)
2. Remove the 4 screws marked [70]. The speaker can then be removed. (Fig.8)
*Remove the right and left speakers in the same way.
[70]
[70]
SPEAKER L
SPEAKER R
Fig.8
8. Speaker Grille (Time required: About 4 minutes each)
1. Remove the lower case assembly. (See procedure 1)
2. Release the 6 claws marked [A] of the SP grille. The SP grille can then be removed. (Fig.1)
*The right and left SP grilles can be removed in the same manner.

PSR-E473
13
9. Removing the Spring Terminals
l Spring terminal A and spring terminal B (Time required: About 8 minutes)
1. Remove the lower case assembly. (See procedure 1)
2. Remove the BATT ribbon cable soldered to spring terminals A and B. (Fig.9)
3. Flip over the lower case assembly, and remove the battery cover assembly. (Fig.1)
4. Spring terminal A is removed by slowly lifting upward and then sliding to the top right. (Fig.9)
5. To remove spring terminal B, release the hook, and pull it out from the inside. (Fig.9)
l Spring terminal C and spring terminal D (Time required: About 1 minute each)
1. Remove the battery cover assembly. (See "●Spring terminal A and spring terminal B" in procedure 9)
2. Release the hooks, and pull out spring terminals C and D. (Fig.9)
SOLDERING HOOK HOOK
CONNECTER
ASSEMBLY
BATT
SPRING TERMINAL A
SPRING TERMINAL B
SPRING TERMINAL D
SPRING
TERMINAL C
SPRING
TERMINAL D
Fig.9

PSR-E473
14
nDisassembling the keyboard (time required: About 13
minutes)
1. Remove the lower case assembly. (See procedure 1)
l White keys and black keys
1. The white and black keys are grouped in single octave sets starting from the left side and consist of a total of five sets.
Only the C6 white key, unlike the other keys, is not included in a set. (Fig.1)
2. To remove a set, remove the 2 each screws marked [120A]. The white and black keys in the set can then be removed.
(Fig.1)
When removing, unfasten the 2 hooks at the back of the black keys upward, and lift the white and black keys while
pulling them toward you a little. (Photo1)
3. To remove the white key C6, remove the screw marked [120B], unhook as described in previous procedure, and pull out
toward you. (Fig.1)
*To reassemble after all white and black keys have been removed, first, mount by aligning the C3 to B3 white and black
keys with the boss, and then mount the remaining white and black keys. (Fig.1)
l Rubber contacts
1. Remove the white and black keys corresponding to the rubber contacts to be removed. (See Fig.1 and "●White keys and
black keys")
2. Remove the respective rubber contacts. (Fig.1)
[120A]
[120A]
[120A]
[120A]
[120A]
[120B]
C1
B2
C3
B3
C4
C6
16NS-C61 KEYBOARD
BOSS
KEYBOARD RUBBER
CONT16N-2M
Fig.1

PSR-E473
15
HOOK
Photo1
l Circuit Board 61L-MK
1. Remove the C1 to B3 white and black keys. (See Fig.1 and "●White keys and black keys")
2. Remove the 4 screws marked [100C] and 8 screws marked [100A]. The circuit board 61L-MK can then be removed.
(Fig.2)
*When installing the circuit board 61L-MK, tighten the screws from No. 1 to 12 in the numerical order as shown in the
figure “61L-MK” in Fig.3. (Fig.3)
l Circuit Board 61H-MK
1. Remove the C4 to C6 white and black keys. (See Fig.1 and "●White keys and black keys")
2. Remove the 3 screws marked [100D] and 5 screws marked [100B]. The circuit board 61H-MK can then be removed.
(Fig.2)
*When installing the circuit board 61H-MK, tighten the screws from No. 1 to 8 in the numerical order as shown in the
figure “61H-MK” in Fig.3. (Fig.3)
[100C] [100C] [100C] [100C] [100D] [100D] [100D]
[100A] [100A] [100B] [100B]
61L-MK 61H-MK
KEYBOARD RUBBER
CONT16N-2M
KEYBOARD RUBBER
CONT16N-2M
KEYBOARD RUBBER
CONT16N-2M
KEYBOARD RUBBER
CONT16N-2M
KEYBOARD RUBBER
CONT16N-2M
Fig.2
61L-MK 61H-MK
2118765432 3 4 5
8761211109
Fig.3

PSR-E473
16
nBACKUP
Backup Parameters
The following Backup parameters will be maintained even if the power is turned off.
Backup parameters (each time)
▪ User Songs
▪ Styles loaded from outside (Style Number 291 to 300)
▪ Samples saved to Quick Sampling pads
Backup parameters when turning off the power
▪ Registration Memory
▪ FUNCTION Settings
Settings with a check mark in the “Backup” column in the Function List are backed up.
In addition to the Backup Parameters above, all style data (including data that has not been loaded) transferred from a computer
and all song data will be maintained and saved within the instrument even if you turn off the power.
NOTICE
Backups are executed automatically when the power is turned off. However, please note that backups are not executed and the
settings will be lost if the power is turned off in the following situations.
▪ When the AC adaptor is unplugged with the power on (even if batteries are installed):
▪ When the power is turned off due to accidents such as electric power failure:
▪ Low or no battery power

PSR-E473
17
nINITIALIZATION
You can erase the backup parameter settings described above, and then restore all the default factory settings. The instrument can
be initialized with the following two methods.
lBackup Clear
This operation initializes the backup parameters.
While holding down the highest white key, press the [ ] (Standby/On) switch to turn the power on.
Highestnoteonthekeyboard(whitekey)
lFlash Clear
This operation deletes all the songs and styles that have been transferred from a computer. However, data that has been loaded
into Styles 291 to 300 will not be deleted. While simultaneously holding the highest white key and the three highest black keys,
press the [ ] (Standby/On) switch to turn the power on.
Highestnoteonthekeyboard(whitekey)andhighestthreeblackkeys
CAUTION ▪ Keep in mind that this operation also deletes any data you have purchased and loaded. Be sure
to save important data to a computer.

PSR-E473
18
nINSPECTIONS
1. TEST PROGRAM
Caution:
▪ If "Factory Reset" of Test Item No. 66 is executed, the setting data and user data will be erased.
Be sure to save the backup data in advance.
2. Measurement conditions
2-1. Environment
Perform tests under following conditions.
▪ Ordinary temperature (5 - 40 degrees Celsius)
▪ Ordinary humidity (20 - 90 %)
If the test results deviate from the test standard range, however, re-test under such conditions as the ordinary temperature (5 -
40 degrees Celsius) and ordinary humidity (30 - 90 % relative humidity).
2-2. Power supply
Use PA-150U or PA-150B for the AC adaptor.
The provided power supply should be within ±10% of the rated voltage of the adapter being used, and 50 Hz or 60 Hz.
2-3. Measuring instruments
▪ Frequency counter (capable of measuring to three or more decimal
places)
▪ Level meter
▪ Oscilloscope
(for pitch measurement)
(for output level measurement)
(for measuring popping noise)
*Use measuring instruments with an input impedance of 1 MΩ or more.
2-4. Test jigs
▪ Foot switch (FC-4A or FC5)
▪ USB cable (A-B type)
▪ USB Flash Drive
▪ Oscillator
▪ Stereo mini-plug cable
▪ Monaural plug gable
(for inspecting [SUSTAIN] jack)
(for inspecting [USB TO HOST] jack)
(for inspecting [USB TO DEVICE] jack)
(for input of sinusoidal waveform to [AUX IN] jack)
(for inspecting [AUX IN] jack)
(for inspecting [MIC INPUT] jack)
2-5. Jack connection state
▪ [PHONES] jack: Connect a measuring instrument (L and R channels: 33 Ω load)
▪ [OUTPUT] jack: Connect a measuring instrument (L/L+R and R channels: 10 kΩ load)
▪ [SUSTAIN] jack: Before turning the power on, plug the foot switch.
2-6. Control condition
▪ PEDAL: OFF
▪ The position of the Master Volume is according to each inspection item.
For inspection items that do not specify, it should be as follows.
• Center standard
(Optional: in order to be able to properly evaluate each inspection item)
▪ Other: The default value when powered ON.

PSR-E473
19
3. Test Mode
3-1. Starting Test mode
1) While holding down the [C#2], [F2], and [G#2] keys simultaneously, press the [ ] (Standby/On) switch.
F2
C#2 G#2
2) When Test mode is started, "TEST" is shown on the LCD screen.
3-2. Selection and execution of test items
1) Press the [+] or [-] buttons in the Number buttons area to select the test item.
2) Press the [START/STOP] button to start the test. Refer to the Test Program Item List regarding how to operate each test
item.
3) Check the completed test.
Check that the cursor (_) is displayed below the first character of the test item name. The “_” is displayed for items
where the test results were OK.
Exiting a test item
Perform the procedure below depending on whether "OK" or "NG" is displayed.
3-3. When the test result shows OK
Press the [START/STOP] or [DEMO] button, or the lowest key ([C1] white key), to return to the selection of test items.
3-4. When the test result is FAIL
Press the [DEMO] button or the lowest key ([C1] white key) to return to the selection of test items.
*If the result was FAIL, pressing the [START/STOP] button does not return to the selection of the test items.

PSR-E473
20
3-5. Test Program Item List
No. Inspection items Procedures for selection and execution of test items
001 ROM version This shows the ROM version.
1) Press the [START/STOP] button.
2) The version number of the main program is displayed.
“*** Main” (where *** is the version number)
3) Press the [START/STOP] button to return to the test item selection screen.
002 Memory Check 1 All Executes a simplified check of all the memories (004- 006) at one time.
1) Press the [START/STOP] button.
2) Check the test result.
If no problem is found, “Mem1 OK” is shown on the LCD.
If any problem is found, “Mem1 NG” is shown on the LCD.
3) Press the [START/STOP] button to return to the test item selection screen.
004 RAM Check1 Executes the simplified check of the RAM connected to the CPU bus.
1) Press the [START/STOP] button.
2) Check the test result.
If no problem is found, “Ram OK” is shown on the LCD.
If any problem is found, “Ram NG” is shown on the LCD.
3) Press the [START/STOP] button to return to the test item selection screen.
006 Wave ROM Check1 Executes a simplified check of the Wave ROM connected to the CPU bus.
1) Press the [START/STOP] button.
2) Check the test result.
If no problem is found, “WRom OK” is shown on the LCD.
If any problem is found, “WRom NG” is shown on the LCD.
3) Press the [START/STOP] button to return to the test item selection screen.
009 Pitch Check Checks whether the correct pitch is output from this instrument.
1) Before starting the test, connect the Frequency Counter to the [PHONES] jack on
the rear panel. (Either L or R ch)
2) Press the [START/STOP] button. The A3 sound is produced.
3) Check the Frequency counter indication.
Specifications range: 441.00 ± 0.2 Hz
4) Press the [START/STOP] button to stop the A3 sound and return to the test item
selection screen.