Fostex MR-16HD User manual

Service Manual
DIGITAL MULTITRACKER

Read Instructions - All the safety and operating
instructions should be read before the appliance is
operated.
Retain Instructions - The safety and operating
instructions should be retained for future reference.
Heed Warnings - All warnings on the appliance and
in the operating instructions should be adhered to.
Follow Instructions - All operating and use
instructions should be followed.
Water and Moisture - The appliance should not be
used near water - for example, near a bathtub,
washbowl, kitchen sink, laundry tub, in a wet
basement, or near a swimming pool, and the like.
Carts and Stands - The appliance should be used
only with a cart or stand that is recommended by the
manufacturer.
1.
2.
3.
4.
5.
6.
or pinched by items placed upon or against them,
paying particular attention to cords at plugs,
convenience receptacles, and the point where they exit
from the appliance.
Cleaning - The appliance should be cleaned only as
recommended by the manufacturer.
Nonuse Periods - The power cord of the appliance
should be unplugged from the outlet when left unused
for a long period of time.
Object and Liquid Entry - Care should be taken so that
objects do not fall and liquids are not spilled into the
enclosure through openings.
Damage Requiring Service - The appliance should be
serviced by qualified service personnel when:
13.
14.
15.
16.
The power supply cord or the plug has been damaged; or
Objects have fallen, or liquid has been spilled into the
appliance;
or
The appliance has been exposed to rain; or
The appliance does not appear to operate normally or
exhibits a marked change in performance; or
The appliance has been dropped, or the enclosure damaged.
A.
B.
C.
D.
E.
Servicing - The user should not attempt to service
the appliance beyond that described in the operating
instructions. All other servicing should be referred to
qualified service personnel.
The appliance should be situated away from drops
of water or spray of water.
Objects containing liquid such as vase must not be
put on the appliance.
The appliance is not completely isolated from the
power supply even if the power switch is at off
position.
Apparatus shall not be exposed to dripping or
splashing and no objects filled with liquids, such as
vases, shall be placed on the apparatus.
Only use attachments/accessories specified by the
manufacturer.
An appliance with a protective earth terminal should
be connected to mains outlet with a protective earth
connection.
An appliance should be placed in a position where
an AC plug / inlet can be easily pulled out by hand.
Main plug is used as the disconnection device. It
shall remain readily operable and should not be
obstructed during intended use. To be completely
disconnected the apparatus from supply mains, the
main plug of the apparatus shall be disconnected
from the mains socket outlet completely.
17.
18.
19.
20.
21.
22.
23.
24.
25.
An appliance and cart combination should be moved
with care. Quick stops, excessive force, and uneven
surfaces may cause the appliance and cart combination
to overturn.
Wall or Ceiling Mounting - The appliance should be
mounted to a wall or ceiling only as recommended by
the manufacturer.
Ventilation - The appliance should be situated so that
its location or position does not interfere with its
proper ventilation. For example, the appliance should
not be situated on a bed, sofa, rug, or similar surface
that may block the ventilation openings; or, place in a
built-in installation, such as a bookcase or cabinet
that may impede the flow of air through the
ventilation openings.
Heat - The appliance should be situated away from
heat sources such as radiators, heat registers,
stoves, or other appliances (including amplifiers) that
produce heat.
Power Sources - The appliance should be connected
to a power supply only of the type described in the
operating instructions or as marked on the appliance.
Grounding or Polarization - The precautions that
should be taken so that the grounding or polarization
means of an appliance is not defeated.
Power Cord Protection - Power supply cords should
be routed so that they are not likely to be walked on
7.
8.
9.
10.
11.
12.
"WARNING"
"TO REDUCE THE RISK OF FIRE OR ELECTRIC
SHOCK, DO NOT EXPOSE THIS APPLIANCE TO RAIN
OR MOISTURE."
SAFETY INSTRUCTIONS
CAUTION
CAUTION: TO REDUCE THE RISK OF ELECTRIC SHOCK,
DO NOT REMOVE COVER (OR BACK).
NO USER - SERVICEABLE PARTS INSIDE.
REFER SERVICING TO QUALIFIED SERVICE PERSONNEL.
RISK OF ELECTRIC SHOCK
DO NOT OPEN
The lighting flash with arrowhead symbol, within an
equilateral triangle, is intended to alert the user to the
presence of uninsulated "dangerous voltage" within the
product's enclosure that may be of sufficient magnitude to
constitute a risk of electric shock to persons.
The exclamation point within an equilateral triangle is
intended to alert the user to the presence of important
operating and maintenance (servicing) instructions in the
literature accompanying the appliance.
CAUTION:
TO PREVENT ELECTRIC SHOCK, MATCH WIDE
BLADE OF PLUG TO WIDE SLOT, FULLY INSERT.
ATTENTION:
POUR EVITER LES CHOCS ELECTRIQUES,
INTRODUIRE LA LAME LA PLUS LARGE DE LA
FICHE DANS LA BORNE CORRESPONDANTE DE
LA PRISE ET POUSSER JUSQU AU FOND.

3
& Service Manual
Parts marked with this sign are safety critical components. They must always be replaced with identical
components. Refer to the Fostex Parts List and ensure exact replacement.
CAUTION
TABLE OF CONTENTS
NOTES
* PCB assembly, parts list and circuit diagrams are given in this manual to assist the service technician in
maintaining the Model MR16HDand MR16HD/CD. To make it simple, MR16HD and MR16HD/CD are
just descried as "MR16" hereafter in this manual. If a distinction is required between the two, the model
number "MR16HD" and "MR16HD/CD" are described.
* The following accessories are supplied with MR-16HD, MR-16HD/CD as the standard accessories.
Owner’s manual, MR-16HD, ENG : 8588088000 (452186)
Owner’s manual, MR-16HD, JPN : 8588089000 (452188)
Owner’s manual supplement, MR-16HD, ENG : 8588093000 (456636)
Owner’s manual supplement, MR-16HD/CD, ENG : 8588095000 (456638)
Owner’s manual supplement, MR-16HD, JPN : 8588094000 (456637)
Owner’s manual supplement, MR-16HD/CD, JPN : 8588096000 (456639)
* The following is the packing material for MR-16HD/CD.
Carton, inner, MR-16HD : 8528101000 (452153)
Poly, Form, L, MR-16HD : 8528099000 (452151)
Poly, Form, R, MR-16HD : 8528100000 (452152)
1.
2.
3.
4.
5.
6.
7.
8.
4
7
10
16
22
24
49
66
SPECIFICATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
CONTROLS, INDICATORS & CONNECTORS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
SOFTWARE UPDATE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
SERVICE MENU . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
MR16HD & MR16HD/CD PCB CONNECTION . . . . . . . . . . . . . . . . . . . . . . . . . .
EXPLODED VIEW, PCB ASSEMBLY & PARTS LIST . . . . . . . . . . . . . . . . . . . . . . . . . .
CIRCUIT DIAGRAMS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
ERROR CODE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

4
& Service Manual
1. SPECIFICATIONS
SPECIFICATION UNIT 0 dBV = 1.0 Vrms, 0 dBu = 0.775 Vrms
REFERENCE LEVEL 12 dB below full scale level
< INPUT & OUTPUT >
ANALOG IN (A ~ D)
Connector XLR-3-31 type (Pin-1: GND, Pin-2: Hot, Pin-3: COLD) / Ø 6 mm TRS
phone balanced (Inserting TRS phone jack breaks signal fed to XLR
connector.)
Input Level - 48 dBu (MIC) ~ + 4 dBu (LINE)
Input Impedance 1.5 kΩor more
400 kΩor more (INPUT SW: GTR)
Reference Input Level
LINE + 4 dBu
MIC - 48 dBu
Phantom - 48 V, On/Off switchable by MENU setting. Fed to XLR connector
only.
INSERT (A)
Connector Ø 6 mm TRS phone (Tip: output, Ring: Input, Sleeve: GND)
Load Impedance 10 kΩor more
Reference Output Level - 10 dBV
Input Impedance 10 kΩor more
Reference Input Level - 10 dBV
STEREO OUT (L, R)
Connector Ø 6 mm phone
Reference Output Level - 10 dBV (Unbalanced)
Load Impedance 10 kΩor more
AUX OUT (x 2)
Connector Ø 6 mm phone
Reference Output Level - 10 dBV (Unbalanced)
Load Impedance 10 kΩor more
PHONES (x 2)
Connector Ø 6 mm STEREO phone
Load Impedance 16 Ωor more
Maximum Output Level 50 mW or more at 32 Ω
MIDI OUT
Connector DIN 5-pin
Format MIDI Standard
FOOT SW
Connector Ø 6 mm phone
ON/OFF Level TTL Level
Type Unlatched type
S/P DIF OUT
Connector Optical
Format IEC60958 (S/P DIF)

5
& Service Manual
USB
Device USB 1.1. USB logo certificate not acquired. Connecting a USB key
board and a storage device for file transfer is possible.
Connector A type
USB
Device USB 2.0 high speed. USB logo certificate not acquired. File transfer be
tween PC and MR16 is possible.
Format B type
1
2
3
4
VBUS
D -
D +
GND
DATA
2 1
3 4
< MAJOR SPECS. >
Record & Playback
Medium Internal 3.5” HD
Sampling Frequency 44.1 kHz
Resolution 16 bits linear
File System FAT-32
Number of Track 16
A/D & D/A Converter
A/D 24 bits delta-sigma, Cirrus Logic CS5331
D/A 24 bits delta-sigma, Cirrus Logic CS4345
Fader 256 steps, 30 mm
CD-R/RW Drive Accession No. 0221205
< CHARACTERISTICS >
Maximum Output Level
ST OUT + 2 dBV ± 1 dB (full scale level)
AUX OUT + 2 dBV ± 1 dB (full scale level)
PHONES 50 mW or more (32 Ωload, 1 kHz)
Reference Output Level
ST OUT - 10 dBV ± 4 dB (Fader fixed at standard position (0 dB), 1 kHz)
AUX OUT - 10 dBV ± 4 dB (Fader fixed at standard position (0 dB), 1 kHz)
Frequency Response
ST OUT 20 Hz ~ 20 kHz + 2 dB, - 3 dB (MIC/LINE)
AUX OUT 20 Hz ~ 20 kHz + 2 dB, - 3 dB (MIC/LINE)
PHONES 50 Hz ~ 15 kHz + 2 dB, - 3 dB (50 mW, 32 Ωload)
T.H.D.
MIC
-> ST OUT 0.1 % or less (Full scale level - 2 dB, 1 kHz)
LINE
-> ST OUT 0.1 % or less (Full scale level - 2 dB, 1 kHz)
LINE
-> PHONES 0.1 % or less (50 mW, 32 Ωload, 1 kHz)
Dynamic Range 89 dB or more
S/N
LINE 89 dB or more (IHF A, input terminated by 150 Ωresistor.)
MIC 80 dB or more (IHF A, input terminated by 150 Ωresistor.)
1
2
3
4
VBUS
D -
D +
GND
DATA
1 2 3 4

6
& Service Manual
Residual Noise
LINE - 87 dBV or less (DIN, input terminated by 150 Ωresistor.)
MIC - 78 dBV or less (DIN, input terminated by 150 Ωresistor.)
PHONES - 85 dBV or less (DIN)
Crosstalk 65 dB or more (1 kHz)
LINE (TRIM : MIN) 85 dB or more (1 kHz, full scale level is input to adjacent channel.)
MIC (TRIM : MAX) 75 dB or more (1 kHz, full scale level is input to adjacent channel.)
Click Noise
Power On/Off - 20 dBVp-p or less (ST OUT)
Others - 30 dBVp-p or less (ST OUT)
Phantom
Voltage + 48 ± 2 V, On/Off on all channels at once by MENU setting.
< OTHERS >
Dimensions 400 (W) x 85 (H) x 265 (D) mm (including protruding portion)
Weight 3.3 kg
Power
JPN 100 V AC
USA 120 V AC
EUR/UK 230 V AC
Power Consumption 14 W
Usage Condition Horizontal, continuous operation
Environmental Condition
Standard Temperature 20 ± 2 °C
Standard humidity 65 ± 5 %
Characteristics Guaranteed
Temperature + 5 °C ~ + 40 °C
Humidity 30 % ~ 70 %
Voltage deviation ± 5 % or less
Operation Guaranteed
Temperature + 5 °C ~ + 45 °C
Humidity 85 % or less
Voltage deviation ± 10 % or less
< STANDARDS >
Vibration & Drop Tests Comply to Fostex Company technical standards
Safety Standard IEC60065
Others
EMI EN55011 Group 1 Class B
EN61000-3-2 & 3-3
EMS EN61000-6-1 (Year 2001 version)
Environment Response RoHSdirectivecompliance
Specifications and physical appearance are subject to change without notice for product improvement.

7
& Service Manual
2. CONTROLS, INDICATORS & CONNECTORS
< Top Panel Section 1 >
1. [INPUT A] input connectors
2. [INSERT] connector
3. [INPUT B, C, D] input connectors
4. [STEREO OUT] jacks
5. [AUX OUT] jacks
6. [PHONES] jacks
7. [PHONES VOL] control
8. LCD display
9. [POWER] switch
10. [MENU/ENTER] rotary / push knob
11. [MASTER] fader
12. Track faders
13. [REC SELECT] keys
14. [PAN] controls
15. [EFFECT SEND] controls
16. [INPUT EQ] keys
17. [TO STEREO BUSS] keys
[TO STEREO BUSS LEVEL] control
18. [PEAK] indicators
19. [DISTORTION] control
20. [TRIM] controls
PEAK
GUITAR
MIN
DISTORTION
MAX LINE MIC
TRIM
INSERT/GUITAR
UNBAL
BALBALBALBAL
INPUT A INPUT B INPUT C INPUT D
VOLUME
MIN MAX
PEAK
LINE
TRIM
MIC
UNBAL
POWER
UNBAL
MIC
TRIM
LINE
PEAK
UNBAL
MIC
TRIM
LINE
PEAK
MAX
MIN
1
R
L
100
SIMULATION SIMULATION
AMP
MIC
010
LR
010
LR
23
RL
100
4 8
010
LR
7
6
RL
100
RL
100
010
LR
5
MAX
MIN
MASTER
REC SELECT
RECORD STOP PLAY
REWIND F FWD
UNDO/REDO
STORE
LOCATE REC END
LOCATE ABS ZERO
A-B PLAY
BOUNCE
MASTERING
BRIGHT
15/16 > STEREO WAV FILE
NATURAL
POWERFUL
B / OUTA / INPLAY MODEAUTO PUNCH
LOCATE
EFFECT
DELAYPLATEHALLROOM BOUNCE MODE
CONTRAST
TIMEBASE SELECT
RHYTHM GUIDE DIRECT LOCATE
EFFECT SEND
PAN
INPUT EQ
TO STEREO BUSS LEVEL
9/10 11/12 13/14 15/16
ABC1 DEF2 GHI3 JKL4 MNO5 YZ9PQR6 +-_0STU7 VWX8 DELETE
MENU / ENTER
MIN MAX
MIN MAX
REVERB / DELAY TIME
LSTEREO OUT R
1AUX OUT 2
1PHONES 2
DYNAMIC BRIT STACK
CONDENSER US METAL
TUBE 60'S COMBO
INPUT A INPUT B INPUT C INPUT D
1 2 34 567 8
9
10
1112
13
14
15
16
17
18
19
20

8
& Service Manual
< Top Panel Section 2 >
21. [REVERB/DELAY TIME] control
22. [EFFECT] keys
23. [BOUNCE MODE] key
24. [15/16 > STEREO WAV FILE] key
25. [MASTERING] keys
[POWERFUL] key
[NATURAL] key
[BRIGHT] key
26. [STORE] key
27. [UNDO/REDO] key
28. [TIME BASE SEL] key
29. [DIRECT LOCATE] key
30. [CONTRAST] key
31. [RHYTHM GUIDE] key
32. Transport keys
[PLAY] key
[STOP] key
[RECORD] key
[F FWD] key
[REWIND] key
33. [LOCATE B/OUT] key
34. [LOCATE A/IN] key
35. [PLAY MODE] key
36. [AUTO PUNCH] key
37. Insert effect selection keys
PEAK
GUITAR
MIN
DISTORTION
MAX LINE MIC
TRIM
INSERT/GUITAR
UNBAL
BALBALBALBAL
INPUT A INPUT B INPUT C INPUT D
VOLUME
MIN MAX
PEAK
LINE
TRIM
MIC
UNBAL
POWER
UNBAL
MIC
TRIM
LINE
PEAK
UNBAL
MIC
TRIM
LINE
PEAK
MAX
MIN
1
R
L
100
SIMULATION SIMULATION
AMP
MIC
010
LR
010
LR
23
RL
100
4 8
010
LR
7
6
RL
100
RL
100
010
LR
5
MAX
MIN
MASTER
REC SELECT
RECORD STOP PLAY
REWIND F FWD
UNDO/REDO
STORE
LOCATE REC END
LOCATE ABS ZERO
A-B PLAY
BOUNCE
MASTERING
BRIGHT
15/16 > STEREO WAV FILE
NATURAL
POWERFUL
B / OUTA / INPLAY MODEAUTO PUNCH
LOCATE
EFFECT
DELAYPLATEHALLROOM BOUNCE MODE
CONTRAST
TIMEBASE SELECT
RHYTHM GUIDE DIRECT LOCATE
EFFECT SEND
PAN
INPUT EQ
TO STEREO BUSS LEVEL
9/10 11/12 13/14 15/16
ABC1 DEF2 GHI3 JKL4 MNO5 YZ9PQR6 +-_0STU7 VWX8 DELETE
MENU / ENTER
MIN MAX
MIN MAX
REVERB / DELAY TIME
LSTEREO OUT R
1AUX OUT 2
1PHONES 2
DYNAMIC BRIT STACK
CONDENSER US METAL
TUBE 60'S COMBO
INPUT A INPUT B INPUT C INPUT D
21 22
23
24
25
26
27
28
29
30
31
32
3334353637

9
& Service Manual
< Rear Panel Section >
1. [INPUT A SELECT] switch
2. [FOOT SW] jack
3. [DIGITAL OUT] connector
4. [MIDI OUT] jack
5. [USB HOST] connector
6. [USB] port
7. [AC IN] conector
< Side Panel Section >
1. Internal CD-R/RW drive
USB USB HOST MIDI OUT DIGITAL OUT FOOT SW
INPUT A SEL
GTR CLEAN MIC/LINE
GTR DIST
1
2
34567
1
ReWritable
COMPACT
Ultra Speed
R O M

10
& Service Manual
3. SOFTWARE UPDATE
1) Connect the AC power cable to the AC IN connector.
2) Press the MR16 power switch.
3) Press the [MENU/ENTER] dial to enter the MENU mode.
4) Rotate the [MENU/ENTER] dial and select the “USB” menu.
5) Press the [MENU/ENTER] dial.
6) Rotate the [MENU/ENTER] dial and select the “Disk Protect”
menu.
7) Press the [MENU/ENTER] dial and set “Disk Protect” to “Off” by
rotating the [MENU/ENTER] dial. Then, press the [MENU/EN-
TER] dial. With this setting, the Disk Protect mode is turned off
indicating the condition that the software update file can be copied
to the MR16 internal HDD.
8) Rotate the [MENU/ENTER] dial to select the “< < Back” menu and
press the [MENU/ENTER] dial.
9) Rotate the [MENU/ENTER] dial and select the “USB Device
Mode” menu.
10) Press the [MENU/ENTER] dial. If MR16 is correctly put into the
USB mode, the display on the right will appear on the LCD. Now
MR16 is ready to connect to PC or Macintosh.
11) Connect the USB cable from the MR16 USB port to PC on which
Windows XP/2000 is running or Macintosh on which OS X is run-
ning.
CAUTION: MR16can be connected to PC on which Windows XP/2000 is running or Macintosh on which
OS X is running for software update as well as audio data transfer. Of course PC/Macintosh
has to be equipped with a USB port.
USB USB HOST MIDI OUT DIGITAL OUT FOOT SW
INPUT A SEL
GTR CLEAN MIC/LINE
GTR DIST
USB port USB port

11
& Service Manual
12) PC or Macintosh recognizes MR16 as an external removable disk.
(a) Windows XP/2000
By double-clicking the removable drive
(E) (MR16), the window on the right will
appear. You can see that the software up-
date file (MR16V102.MOT) is placed in
the top directory tree of the Removable
Disk (E).
Continue to the next page.
The example on the right indicates that
MR16 is recognized as a removable disk
(E) in the My Computer on Windows XP
PC. Unzip the software update file with
“zip” extension (e.g. MR16_V102.zip)
normally sent together with a technical
bulletin. If you do so, a software update
file (e.g. MR16V102.MOT) will be cre-
ated. Place a newly created software up-
date file with “MOT” (motorola format)
extension in the root directory tree of the
Removable disk (E).
MR16 software
update file
MR16
song folder

12
& Service Manual
After transferring the software update file is com-
pleted, do not tun off the USB connection by
pressing the MR16 STOP key. First, you need
to safely remove the MR16 from PC side by
opening the “Safety Removable Hardware” in
the tool bar and pressing the “Stop” button on
Windows XP/2000 PC. Then, you can turn off the
USB connection from the MR16 side.
(b) Macintosh OS X
MR16 is recognized as
“MR16” on the Macintosh
OS X desktop. By double-
clicking the MR16 icon, the
window on the right will
appear. There are five song
folders and one software
update file “MR16V101.
MOT”.
Unzip the software update file with “zip”
extension (e.g. MR16_V102.zip) normally
sent together with a technical bulletin.
Copy and paste a newly created software file
with “MOT” (motorola format) extension
(e.g. MR16V102.MOT) onto a root direc-
tory of MR16 HDD connected to Macintosh
(OS X).
Press this STOP butten befor turning off
the MR16 USB mode by pressing
the STOP key.
Press this OK butten befor turning off the
MR16 USB mode by pressing theOK key.
MR16 Song folder
MR16 Software
update file
MR16
Softwareupdate file
MR16
Song folder

13
& Service Manual
After transferring the software update
file is completed, do not tun off the
USB connection by pressing the
MR16 STOP key. First, as shown
on the right, you need to press the
EJECT button on Macintosh. Then,
you can turn off the USB connection
from the MR16 side.
CAUTION: There is a case that it takes time for PC or Macintosh to recognize MR16 as an external device.
While the “ACC” (access) indication on the upper right of the MR16 LCD is flashing in the USB
mode, do not disconnect the USB cable between MR16 and PC / Macintosh.
13) Disconnect the USB cable between MR16 and PC / Macintosh.
14) On MR16 with the normal display appears, press the [MENU/ENTER] dial while holding down the [STOP]
key to access the Service Mode menu.
15) Rotate the [MENU/ENTER] dial and select the “Service Mode”
menu.
16) Press the [MENU/ENTER] dial.
17) Rotate the [MENU/ENTER] dial and select the “Version Up” menu.
18) Press the [MENU/ENTER] dial.
19) Rotate the [MENU/ENTER] dial and select a software update file
with the version number you would like to update.
NOTE: As long as the file name is different, up to five software
update files can be placed in the root directory.
20) Press the [MENU/ENTER] dial.
PEAK
GUITAR
MIN
DISTORTION
MAX LINE MIC
TRIM
INSERT/GUITAR
UNBAL
BALBALBALBAL
INPUT A INPUT B INPUT C INPUT D
VOLUME
MIN MAX
PEAK
LINE
TRIM
MIC
UNBAL
POWER
UNBAL
MIC
TRIM
LINE
PEAK
UNBAL
MIC
TRIM
LINE
PEAK
MAX
MIN
1
R
L
100
SIMULATION SIMULATION
AMP
MIC
010
LR
010
LR
23
RL
100
4 8
010
LR
7
6
RL
100
RL
100
010
LR
5
MAX
MIN
MASTER
REC SELECT
RECORD STOP PLAY
REWIND FFWD
UNDO/REDO
STORE
LOCATE REC END
LOCATEABS ZERO
A-B PLAY
BOUNCE
MASTERING
BRIGHT
15/16 > STEREO WAVFILE
NATURAL
POWERFUL
B / OUTA / INPLAY MODEAUTO PUNCH
LOCATE
EFFECT
DELAYPLATEHALLROOM BOUNCE MODE
CONTRAST
TIMEBASE SELECT
RHYTHM GUIDE DIRECT LOCATE
EFFECT SEND
PAN
INPUT EQ
TO STEREO BUSS LEVEL
9/10 11/12 13/14 15/16
ABC1 DEF2 GHI3 JKL4 MNO5 YZ9PQR6 +-_0STU7 VWX8 DELETE
MENU / ENTER
MIN MAX
MIN MAX
REVERB / DELAYTIME
LSTEREO OUT R
1AUX OUT 2
1PHONES 2
DYNAMIC BRIT STACK
CONDENSER US METAL
TUBE 60'S COMBO
INPUT A INPUT B INPUT C INPUT D
A
A
A-B
A
H
old down [STOP] ke
y
.
P
ress the
[MENU/ENTER] key.
Press the EJECT button
before turning off the
MR16 USB mode by
pressing the STOP key.
NOTE: Pressing the [MENU/ENTER]
dial while holding down the
[STOP] key allows to access
the "Version" and "Version
Up" Service menu only. To
fully access all the Service
menus, as mentioned on page
16, press the [MENU/ENTER]
dial while holding down the
[STOP] and [POWER] keys.

14
& Service Manual
21) The selected software file is displayed together with the software
version number. To go on, press the [MENU/ENTER] dial while
holding down the [REC] key.
22) The software updating procedures begin. “File loading...”, “Flash
ROM Erasing...” and “Flash ROM Writing...” will appear in order.
It will take about one minute to complete the procedures.
23) Upon completion, “Completed” will appear on the LCD.
24) Turn off the power once and then back on to complete the software
update procedures. In the meantime, confirm the software version
number and the programming date displayed for a short instance in
the boot-up process.
The software version can be checked by the “Version” Service
Mode menu. In the condition with normal display appears, press the
[MENU/ENTER] dial while holding down the [STOP] key to access
the Service Mode menu. If you do so, the display on the right will
appear on the LCD. Rotate the [MENU/ENTER] dial to select the
“Service Mode” menu and press the [MENU/ENTER] dial.

15
& Service Manual
The display on the right will appear on the LCD. It indicates that
the programming date is February 5th, 2007, the version number is
V1.02 and the CPU revision number is E2. To get back to the normal
display, press the [STOP] key.
25) Press the [STOP] key to return to the normal display mode. Then,
press the [MENU/ENTER] dial to enter the MENU mode.
26) Rotate the [MENU/ENTER] dial to select the "System" menu and
press the [MENU/ENTER] dial.
27) Rotate the [MENU/ENTER] dial and select the “Init Memory”
menu.
28) Press the [MENU/ENTER] dial.
29) The display contents on the right appear on the LCD. Press the
[MENU/ENTER] dial while holding down the [RECORD] key. This
operation will initialize all the system settings to default.
CAUTION: The “Initialize Memory” operation sets all the system
settings to the default values. For example, the “Disk Protect” setting in the USB menu is set to
“ON” after initializing the memory. If you would like to update the software in future, please re-
member that it has to be set to “OFF” again.
Select the “Version” menu and press the [MENU/ENTER] dial.

16
& Service Manual
4. SERVICE MENU
In addition to various MENU modes, SERVICE menus are available to check and maintain the MR16 condition.
Please utilize them when servicing MR16.
4-1. Entering Service Menu
1) Connect the AC cable and power on MR16. After the bootup proce-
dure is completed, the display on the right will appear on the MR16
LCD.
2) Press the [MENU/ENTER] dial while holding down the [STOP]
and [POWER] keys. If you do so, "Service Mode" is displayed on
the MR16 LCD.
3) Rotate the [MENU/ENTER] dial and select “Service Mode”. Then,
press the [MENU/ENTER] dial. You can see that the following ser-
vice menus will appear on the MR16 LCD.
Select one of the service menus you would like to execute and press
the [MENU/ENTER] dial.
4-2. Version
In the “Version” service menu, the current MR16 software version as well
as the corresponding software programming date can be checked.
1) After selecting the “Version” menu, press the [MENU/ENTER] dial
to check the current software version and the programming date.
The example on the right indicates that the software version is
“V1.02” the programming date is February 5th, 2007 and the CPU
revision number is E2.
By pressing the STOP key, MR16 returns to the service menu select
condition.
4-3. Version Up
The “Version Up” service menu allows you to update the MR16 software
by placing the software update file in the root directory tree of the MR16
3.5” internal hard disk. For the update procedures, refer to the previous
section “3. SOFTWARE UPDATE” on page 10 in detail.
CAUTION: If the [POWER] key is held down for more than three
seconds, MR16 turns off. Please be careful to expedite
the above manipulation 2).

17
& Service Manual
4-4. Advanced Format
MR16 checks the remaining capacity / partition information written on the
internal HD in the bootup process after powering on. In case this informa-
tion does not match the current HD condition, the “Advanced Format”
service menu can be used. For example, even if no song has been created
(recorded) but the remaining capacity indicates only 10MB, execute the
“Advanced Format” menu.
As indicated on the right, please remember that executing the “Advanced
Format” deletes all the songs recorded on the internal HD.
Upon completion of “Advanced Format”, the message “Boot Sector Clear”
appears on the LCD.
NOTE: In case MR16 is not booted up correctly and displays an alert
message such as “Please Wait!” permanently, power if off once.
Then, while holding down the [STOP] key, power on MR16.
This mode allows to boot up without loading any recorded songs.
Next, execute the “Advanced Format” menu.
4-5. CD-RW Disk Erase
Executing the “Disk Erase” service menu erases all existing song data on
the CD-RW disk put into the MR16HD/CD internal CD-R/RW drive.
1) Rotate the [MENU/ENTER] dial and select “CD-RW”. Then, press
the [MENU/ENTER] dial.
2) Rotate the [MENU/ENTER] dial and select “Disk Erase”. Then,
press the [MENU/ENTER] dial.
3)
To go on, press the [MENU/ENTER] dial while holding down the
[REC] key.
4)
The CD-RW disk erasing procedures begin. “Erasing...” will appear .
It will take about one minute to complete the procedures.
5)
Upon completion, “Completed!” will appear on the LCD.

18
& Service Manual
4-6. Display Test
This menu checks if the EFFECT SEND / PAN / REVERB/DELAY pots &
faders / self-illuminating tact switches are working properly.
1) After selecting the “Display Test” menu, press the [MENU/ENTER]
dial.
2) Press the [MENU/ENTER] dial again. If you do so, the display on
the right will appear on the MR16 LCD.
As shown in the drawing below, each value the EFFECT SEND /
PAN / TO STEREO BUSS LEVEL / REVERB/DELAY pots & fad-
ers position. Rotate the EFFECT SEND / PAN pots and move the
faders to check if the value changes from "0" to "F" in hexadecimal
depending on the pots / fades position as follow.
EFFECT SEND Pots 1 ~ 8: 0 (CCW) ~ F (CW)
PAN pots 1 ~ 8: 0 (CCW) ~ F (CW)
TO STEREO BUSS LEVEL pot: 0 (CCW) ~ F (CW)
REVERB/DELAY pot: 0 (CCW) ~ F (CW)
Channel faders (1 ~ 8, 9/10, 11/12, 13/14, 15/16): 0 (down) ~ F (up)
Master fader: 0 (down) ~ F (up)
PEAK
GUITAR
MIN
DISTORTION
MAX LINE MIC
TRIM
INSERT/GUITAR
UNBAL
BALBALBALBAL
INPUT A INPUT B INPUT C INPUT D
VOLUME
MIN MAX
PEAK
LINE
TRIM
MIC
UNBAL
POWER
UNBAL
MIC
TRIM
LINE
PEAK
UNBAL
MIC
TRIM
LINE
PEAK
MAX
MIN
1
R
L
100
SIMULATION SIMULATION
AMP
MIC
010
LR
010
LR
23
RL
100
4 8
010
LR
7
6
RL
100
RL
100
010
LR
5
MAX
MIN
MASTER
REC SELECT
RECORD STOP PLAY
REWIND F FWD
UNDO/REDO
STORE
LOCATE REC END
LOCATE ABS ZERO
A-B PLAY
BOUNCE
MASTERING
BRIGHT
15/16 > STEREO WAV FILE
NATURAL
POWERFUL
B / OUTA / INPLAY MODEAUTO PUNCH
LOCATE
EFFECT
DELAYPLATEHALLROOM BOUNCE MODE
CONTRAST
TIMEBASE SELECT
RHYTHM GUIDE DIRECT LOCATE
EFFECT SEND
PAN
INPUT EQ
TO STEREO BUSS LEVEL
9/10 11/12 13/14 15/16
ABC1 DEF2 GHI3 JKL4 MNO5 YZ9PQR6 +-_0STU7 VWX8 DELETE
MENU / ENTER
MIN MAX
MIN MAX
REVERB / DELAY TIME
LSTEREO OUT R
1AUX OUT 2
1PHONES 2
DYNAMIC BRIT STACK
CONDENSER US METAL
TUBE 60'S COMBO
INPUT A INPUT B INPUT C INPUT D

19
& Service Manual
3) After checking, press the [MENU/ENTER] dial to proceed the next
Display Test. The next test is to check if the self-illuminating tact
switches are lit in red.
Check if the self-illuminating tact switches are properly lit in red as
indicated in the drawing below.
4) After checking, press the [MENU/ENTER] dial to proceed the next
Display Test. The next test is to check if the self-illuminating tact
switches are lit in green.
Check if the self-illuminating tact switches are properly lit in green
as indicated in the drawing below.
PEAK
GUITAR
MIN
DISTORTION
MAX LINE MIC
TRIM
INSERT/GUITAR
UNBAL
BALBALBALBAL
INPUT A INPUT B INPUT C INPUT D
VOLUME
MIN MAX
PEAK
LINE
TRIM
MIC
UNBAL
POWER
UNBAL
MIC
TRIM
LINE
PEAK
UNBAL
MIC
TRIM
LINE
PEAK
MAX
MIN
1
R
L
100
SIMULATION SIMULATION
AMP
MIC
010
LR
010
LR
23
RL
100
4 8
010
LR
7
6
RL
100
RL
100
010
LR
5
MAX
MIN
MASTER
REC SELECT
RECORD STOP PLAY
REWIND F FWD
UNDO/REDO
STORE
LOCATE REC END
LOCATEABS ZERO
A-B PLAY
BOUNCE
MASTERING
BRIGHT
15/16 > STEREO WAV FILE
NATURAL
POWERFUL
B / OUTA / INPLAY MODEAUTO PUNCH
LOCATE
EFFECT
DELAYPLATEHALLROOM BOUNCE MODE
CONTRAST
TIMEBASE SELECT
RHYTHM GUIDE DIRECT LOCATE
EFFECT SEND
PAN
INPUT EQ
TO STEREO BUSS LEVEL
9/10 11/12 13/14 15/16
ABC1 DEF2 GHI3 JKL4 MNO5 YZ9PQR6 +-_0STU7 VWX8 DELETE
MENU / ENTER
MIN MAX
MIN MAX
REVERB / DELAY TIME
LSTEREO OUT R
1AUX OUT 2
1PHONES 2
DYNAMIC BRIT STACK
CONDENSER US METAL
TUBE 60'S COMBO
INPUT A INPUT B INPUT C INPUT D
PEAK
GUITAR
MIN
DISTORTION
MAX LINE MIC
TRIM
INSERT/GUITAR
UNBAL
BALBALBALBAL
INPUT A INPUT B INPUT C INPUT D
VOLUME
MIN MAX
PEAK
LINE
TRIM
MIC
UNBAL
POWER
UNBAL
MIC
TRIM
LINE
PEAK
UNBAL
MIC
TRIM
LINE
PEAK
MAX
MIN
1
R
L
100
SIMULATION SIMULATION
AMP
MIC
010
LR
010
LR
23
RL
100
4 8
010
LR
7
6
RL
100
RL
100
010
LR
5
MAX
MIN
MASTER
REC SELECT
RECORD STOP PLAY
REWIND F FWD
UNDO/REDO
STORE
LOCATE REC END
LOCATEABS ZERO
A-B PLAY
BOUNCE
MASTERING
BRIGHT
15/16 > STEREO WAV FILE
NATURAL
POWERFUL
B / OUTA / INPLAY MODEAUTO PUNCH
LOCATE
EFFECT
DELAYPLATEHALLROOM BOUNCE MODE
CONTRAST
TIMEBASE SELECT
RHYTHM GUIDE DIRECT LOCATE
EFFECT SEND
PAN
INPUT EQ
TO STEREO BUSS LEVEL
9/10 11/12 13/14 15/16
ABC1 DEF2 GHI3 JKL4 MNO5 YZ9PQR6 +-_0STU7 VWX8 DELETE
MENU / ENTER
MIN MAX
MIN MAX
REVERB / DELAY TIME
LSTEREO OUT R
1AUX OUT 2
1PHONES 2
DYNAMIC BRIT STACK
CONDENSER US METAL
TUBE 60'S COMBO
INPUT A INPUT B INPUT C INPUT D

20
& Service Manual
6) After checking, press the [MENU/ENTER] dial to proceed the next
Display Test. The next test is to check if the tact switches on the
MR16 top panel except the POWER SW is in good contact. If the tact
switch is pressed, the corresponding asterisk mark on the MR16 LCD
will go out. If not, the tact switch might be worn out and be replaced.
After all the tact switches are confirmed to be in good contact, the
display on the right will appear on the MR16 LCD.
5) After checking, press the [MENU/ENTER] dial to proceed the next
Display Test. The next test is to check if the self-illuminating tact
switches are lit in umber.
Check if the self-illuminating tact switches are properly lit in orange
as indicated in the drawing below.
PEAK
GUITAR
MIN
DISTORTION
MAX LINE MIC
TRIM
INSERT/GUITAR
UNBAL
BALBALBALBAL
INPUT A INPUT B INPUT C INPUT D
VOLUME
MIN MAX
PEAK
LINE
TRIM
MIC
UNBAL
POWER
UNBAL
MIC
TRIM
LINE
PEAK
UNBAL
MIC
TRIM
LINE
PEAK
MAX
MIN
1
R
L
100
SIMULATION SIMULATION
AMP
MIC
010
LR
010
LR
23
RL
100
4 8
010
LR
7
6
RL
100
RL
100
010
LR
5
MAX
MIN
MASTER
REC SELECT
RECORD STOP PLAY
REWIND F FWD
UNDO/REDO
STORE
LOCATE REC END
LOCATEABS ZERO
A-B PLAY
BOUNCE
MASTERING
BRIGHT
15/16 > STEREO WAV FILE
NATURAL
POWERFUL
B / OUTA / INPLAY MODEAUTO PUNCH
LOCATE
EFFECT
DELAYPLATEHALLROOM BOUNCE MODE
CONTRAST
TIMEBASE SELECT
RHYTHM GUIDE DIRECT LOCATE
EFFECT SEND
PAN
INPUT EQ
TO STEREO BUSS LEVEL
9/10 11/12 13/14 15/16
ABC1 DEF2 GHI3 JKL4 MNO5 YZ9PQR6 +-_0STU7 VWX8 DELETE
MENU / ENTER
MIN MAX
MIN MAX
REVERB / DELAY TIME
LSTEREO OUT R
1AUX OUT 2
1PHONES 2
DYNAMIC BRIT STACK
CONDENSER US METAL
TUBE 60'S COMBO
INPUT A INPUT B INPUT C INPUT D
PEAK
GUITAR
MIN
DISTORTION
MAX LINE MIC
TRIM
INSERT/GUITAR
UNBAL
BALBALBALBAL
INPUT A INPUT B INPUT C INPUT D
VOLUME
MIN MAX
PEAK
LINE
TRIM
MIC
UNBAL
POWER
UNBAL
MIC
TRIM
LINE
PEAK
UNBAL
MIC
TRIM
LINE
PEAK
MAX
MIN
1
R
L
100
SIMULATION SIMULATION
AMP
MIC
010
LR
010
LR
23
RL
100
4 8
010
LR
7
6
RL
100
RL
100
010
LR
5
MAX
MIN
MASTER
REC SELECT
RECORD STOP PLAY
REWIND F FWD
UNDO/REDO
STORE
LOCATE REC END
LOCATEABS ZERO
A-B PLAY
BOUNCE
MASTERING
BRIGHT
15/16 > STEREO WAV FILE
NATURAL
POWERFUL
B / OUTA / INPLAY MODEAUTO PUNCH
LOCATE
EFFECT
DELAYPLATEHALLROOM BOUNCE MODE
CONTRAST
TIMEBASE SELECT
RHYTHM GUIDE DIRECT LOCATE
EFFECT SEND
PAN
INPUT EQ
TO STEREO BUSS LEVEL
9/10 11/12 13/14 15/16
ABC1 DEF2 GHI3 JKL4 MNO5 YZ9PQR6 +-_0STU7 VWX8 DELETE
MENU / ENTER
MIN MAX
MIN MAX
REVERB / DELAY TIME
LSTEREO OUT R
1AUX OUT 2
1PHONES 2
DYNAMIC BRIT STACK
CONDENSER US METAL
TUBE 60'S COMBO
INPUT A INPUT B INPUT C INPUT D