
e Holmberg Musical Clock
Model C-17
Owner’s Guide
Copyright © 2008 Holmberg Clockworks
All Rights Reserved
H C
P.O. Box 2275 ✴ Universal City ✴ Texas ✴ 78148
(830) 606-1838
email: mdonald@holmbergclockworks.com
www.holmbergclockworks.com

Owner’s Guide
A
Musical Clock
Model C-17
Custom Built in
and
Upgraded with overhaul and new electronics in
For
SN:

4 Model C-17 Owner’s Guide
Quickstart
Certicate of ownership
Unpacking
Introduction
Guarantee
Instrument Features
Menu Functions
Disclaimer
History of the Haydn Musical Clock
Musical Clock Library
Musical Clock Models
Page 5
Page 8
Page 4
Page 10
Page 11
Page 12
Page 13
Page 15
Page 58
Page 60
Page 66
Page 100
e Microcontroller
Table of Contents

The Holmberg Musical Clock 5
Unpacking
The Holmberg musical clock is
shipped in two parts: The instrument is packed in a wooden
shipping crate, with Phillips head
screws securing the cover; and the
organ pipes, are packed separately in a package which includes
the organ pipes and gloves for the
handling of the organ pipes.
Open the instrument case, and
remove enough foam packing to
allow for the removal of the instrument.
Remove all wrapping, and plug in
the Musical Clock. Open the control panel and turn on the power
switch.
Reach into the rear of the instrument and remove all foam packing. After that has been accomplished, slide the cardboard
packing free of the chime rods.
Insert the C cell battery into the
dial movement. The positive end
of the battery is indicated next to
the movement.
Typical packing crate

6 Model C-17 Owner’s Guide
Turn on the DEMO switch, and just let it play (blowing free air)
while you open the pipes and arrange them for their installation.
This will assure that all of the air channels are open, clean and
clear and will prevent debris from entering the organ during pipe
installation. (see gure on opposite page)
From the pipes box, using gloves, lay out the organ pipes. All of
the pipes are marked on their back side with the correct note.
Chime detail after the packing is removed
Picking a long pipe, noting the
marking and checking the pipe
layout in your Owner’s Guide,
you will see where it needs to be
placed in the instrument.
Be sure that the pipe you are installing is properly hooked before
you let go. The bodies for these
metal pipes are made by our pipe
maker in England, and repair and/
or replacement is lengthy.
With all of the pipes installed, turn
o the DEMO Switch, and press
the SELECT Switch until the display
shows TUNE.
Push the ENTER Switch twice, and
all will be ready to check the tuning. Please refer to the Turning
page in your Owner’s Guide.
Unpacking

The Holmberg Musical Clock 7
Model C-17 pipe layout diagram
Unpacking

8 Model C-17 Owner’s Guide
Quickstart
Thank you for your purchase of the
Holmberg musical clock. The following Owner’s Guide is a detailed
description of the many features of
the instrument. However, you may
wish to listen to your clock without
such a detailed reading of this
guide. The following will give you
a quick start:
Plug in the instrument.
Flip the power switch on the control panel to the ON position. It will
take a moments for the system to
initialize.
When Play Selection is visible on
the display, ip the black switch
to the on position. This will put the
instrument into the demonstration
mode and it will play continuously
until you turn this switch o.
You may also notice dancing musical notes on the display. This is
THe
Holmberg musical clock’s screen
saver.
Play Selection
Typical control panel

The Holmberg Musical Clock 9
Quickstart
Control panel screen saver

10 Model C-17 Owner’s Guide
Introduction
Holmberg musical clocks are contemporary versions
of historical mechanical organ clocks of the 17th
and 18th centuries.
The clocks are built by master organ builders,
father and son, trained in old world discipline and
tradition.
Automatic musical instruments incorporating organ ute pipes of exceptional quality have been
treasured for hundreds of years and today are
mostly found in museums and are coveted by
collectors. This quality is accomplished through
the use of hand selected hardwoods; design and
execution of the proper logarithmic scales for
organ pipe making; and artistic voicing, nishing
and tonal regulation.
Music specically composed for automatic musical instruments by some of the world’s greatest
composers (Handel, Haydn, Beethoven et al.)
often included ornamentation beyond the ability
of the average organist. Similarly, chest work and
mechanism to perform such complex music require speed and function beyond the capabilities
of the average pipe organ. The unique low pressure electro-pneumatic design of Holmberg chest
work responds easily to the demands of these
composers. The Holmberg music al clock sets new
standards of engineering and reliability with 100
per cent hardwood construction, ne German
leathers, and expansion channeling.
Bringing all this together into a new instrument
with exibility and programmability beyond the
imagination of the early builders, we employ the
springs, escapements, gears, wheels, jewels, pins
and barrels of our time; the mighty microprocessor with solid state circuitry custom designed for
our digital microcontroller.
With the synergistic coupling of the work of great
composers, superb craftsmanship, 4/4 Westminster chimes and world class computer technology, we present the Holmberg musical clock.

The Holmberg Musical Clock 11
Guarantee
THe Holmberg musical clock is guaranteed to the original registered owner for a period of ve years from
the date of delivery, against any defect in material and/or workmanship, including any deviation from
the performance of said musical clock outlined in the owner’s guide identied with the serial number
matching the serial number of the musical clock.
The electronics that control the functions of the instrument carry the guarantee given us by the manufacturers, which is the industry standard of one year.
Holmberg clockworks agrees to correct any such defect in material and/or workmanship brought to its
attention within the stated period without cost to the original owner of record as follows: At the option
of Holmberg clockworks, any necessary repair will be made on the owner’s premises, or the owner will be
furnished with a proper shipping carton and instructions for return of the instrument to the factory for
service.
In either case, repairs will be made without cost to the
owner with the exception of shipping costs,
which need to be paid by the owner.
This guarantee is exclusive of tuning and normal care of the instrument and it does not include repairs
of any damage from abuse, mishandling, re, water, or like damage, or damage from tampering by
unqualied persons.

12 Model C-17 Owner’s Guide
Instrument Features
Compass of 27 Gedeckt Organ Pipes
Automatic electric motor and blower
Electro-pneumatic organ chest work
Solid chime rods with English magnet action
Custom dial with brass and glass bezel
Organ pipes tuned to standard A-440 v.p.s pitch
Hardwood construction
Power—115 volts/60 cycle - standard, 220 volts/50 cycle (export)

The Holmberg Musical Clock 13
The Microcontroller
The microcontroller that supervises the operation of your musical
clock is an advanced integrated
computer system. Its operating
system governs the time keeping functions of the clock, the
automatic playing of music and
chimes, and many subsidiary functions available to the owner, and
the system’s internal maintenance
functions.
The main components of the
microcontroller are:
Musical Clock microcontroller and Organ Interface
Microcontroller motherboard
Compact Flash Card
Pipe organ interface
32 character display
Control panel

14 Model C-17 Owner’s Guide
Select
Enter
Demo Button
Power Button
The Holmberg
Musical Clock
Note: The placement of the display, switches and buttons may vary depending on the model and design of the casework of the clock.
The Microcontroller
The music that comes with your
musical clock, and additional
music which may be purchased
later, is stored on an internal compact ash card which is already
installed in the clock. When power
is applied, the system will take a
few moments to initialize itself and
Play Selection will be visible on
the display. When this is true, the
system is functional. Nothing else
is required for the clock to automatically chime and play music at
designated intervals.
However, your instrument is capable of much, much, more. Other
sections of this guide will introduce
you to features that will allow you
to tailor the system to your own
desires.
To use the control panel simply
open the drawer or door, whichever your model happens to have,
and the control panel and display
will be visible.

The Holmberg Musical Clock 15
The Operating system of your
musical clock contains a menu of
commands for setting its various
performance characteristics. In
most cases, the Select key will display an option and the Enter key
will execute the displayed task.
For example, pressing the Select
key will display each function and
pressing the Enter key will activate
it. To help keep track of where you
are in the system’s menu, certain
commands are bracketed, such
as [Add]. This indicates that you
are using or setting the displayed
command.
The remainder of this section is a
description of these functions and
ample space is provided for your
own notes.
Menu Functions
Model C-17 Control Panel detail
While the clock is idle, you will notice dancing musical notes on the display.
Press Select or Enter and the current menu function is displayed. Press Select
until the desired function is displayed.

16 Model C-17 Owner’s Guide
Menu Functions
Play Selection
To choose a menu function, simply
press the select key until the desired function is displayed.
Note: A ‘’ in a function name
indicates that the function aects
the automatic operation of the
clock.
Function Description Function Description
Play Selection
Play a musical selection
Set Recital
Program recital mode selections
Recital Play
Play a recital program
Auto Set
Program auto settings
Play Chimes
Play chimes
Mute Set
Program organ and/or chimes mute settings
Time Set
Set curent time
Chimes Set
Turn chimes on or off
Set Volume
Select default musical library(s)
Order Set
Program ordering of muscal selections for auto and demo play
Set Selection
Change the next auto play selection
Music Frequency
Program frequency of auto play
Set Tempo
Change tempo for a musical selection
Clock Status
display current status of clock
Set Rank
1
Turn addional rank on or off
Tune
Play notes of pipe organ for tuning
notes
1 Availiable on multi-rank models
Software Functions Menu

The Holmberg Musical Clock 17
Play Selection
Play Selection
Haydn #12
Haydn #1
Playing...
Press Enter to choose Play Selection
Press Select to display a musical
selection. Continuing to press the
Select key will cycle through the
current default music library.
Press Enter to play the selection
that you have chosen.
Play a musical composition from
the current musical library. This
function will allow you to select a
composition and play it. See Set
Volume to change the current
music library.

18 Model C-17 Owner’s Guide
Recital Play
Recital Play
Haydn #7
Playing...
Press Enter to play a recital. To
learn more about programming
a recital, see the Set Recital function.
The system plays the pieces that
have been programmed for the
recital.
Note: Any musical compositions
may be programed as a recital,
however certain musical pieces
in the music library are considered multi-piece works, such as a
3-movement sonata, as noted in
the music library pages.
This function will play a pre-programmed recital

The Holmberg Musical Clock 19
Play Chimes
Play Chimes
Playing Chimes...
Press Enter to play the chimes.
Plays the Full 4/4 Westminster tune
and strikes the current hour.
Play chimes and strike current hour.

20 Model C-17 Owner’s Guide
Time Set
Time Set
Press Enter to set the current time.
Press the Select key until the desired command is displayed.
Note: The role of the Select and Enter buttons of the time setting function is he exception to the rule.
In general, the select key displays a command or options and the Enter key conrms or sets it. However because of the complexity of time setting where only two buttons are available a nd dierent
mode of operation is necessary. In setting the time, the Select key changed a value in the current
time, such as: hour, minute, AM/PM, or Adjustment and the Enter key displays a command.
Time setting is accomplished
through the following commands:
Set Hour
Set Minute
Set AM/PM
Adjust
Exit
06:15 PM 0
Set Minute
Set system time.

The Holmberg Musical Clock 21
Time Set
Command: Set Hour
06:15 PM 0
Set Hour
Press the Enter key to display the
Set Hour command.
Press the Select key to change the
current hour.
THe Holmberg musical
clock oers a twelve-hour clock.
Pressing the select key will cycle
through the hours 1-12. AM/PM is
set separately.
Command: Set Minute
Press the Enter key to display the
Set Minute command.
06:15 PM 0
Set Hour
12:15 PM 0
Set Hour

22 Model C-17 Owner’s Guide
Time Set
Press the Select key to change the
current minute. The range of minutes to set is 0-59.
Command: Set AM/
PM
06:15 PM 0
Set AM/PM
Press the Enter key to display the
Set AM/PM command.
Press the Select key to change the
current AM/PM.
12:39 PM 0
Set Hour
12:15 AM 0
Set AM/PM

The Holmberg Musical Clock 23
Time Set
Command: Adjust
06:15 PM 0
Adjust
Press the Enter key to display the Adjust command. This command sets a time adjustment that may be
necessary for your clock. This adjustment will allow you to adjust the time in minutes per month. If you
should notice that the controller gains or looses time, just enter this additive adjustment. For example,
if your clock looses 6 minutes per month, set the adjust to positive 6. If the clock gains 5 minutes, set
the adjust value to –5. It may take a little experimentation to determine a good value for your clock.
Press the Select key to change the
current time adjustment.
12:15 AM -5
Adjust

24 Model C-17 Owner’s Guide
Time Set
Command: Exit
06:15 PM 0
Exit
06:15 PM 0
Exit
Press the Enter key to display the
Exit command.
Press Select to exit the the time setting function. The system time and
and the time adjustment value will
be set to the displayed values.

The Holmberg Musical Clock 25
Set Volume
Set Volume
Set the current music volume(s).
The
Holmberg musical clock is ordered with one or more volumes
of music that is stored on the compact ash card. The Set Volume
function allows the owner to set
the current volume(s) from which
the system will choose music to
play. For example: Suppose the
clock is delivered with Haydn,
Press Enter to set the current
Volume(s) from the music library.
The Set Volume function has several commands to make it easier
to program the current volumes.
They are:
List
Add
New
Status
Handel, and Christmas Hymns. The owner may wish to play the
Christmas Hymns only during the Christmas season, so the owner
would use this function to change the way in which the system
chooses its musical selections.
The following is a detailed description of each command of Set
Volume:
List: This will display volumes that are current. Press Select to display the next volume name. Press Enter to quit the list function.
Add: This will add volumes to the current volume list. Press Select
until the wanted volume is displayed. Press Enter.
New: This will erase the current volume list. Press Enter.

26 Model C-17 Owner’s Guide
Status: This will display the number of volumes in the current volume list. Press Enter.
Quit: This will exit the Set Volume function. Press Enter.
This function is critical to the correct operation of the clock.
Should the clock loose power during the operation of this function the clock may be left in an unstable state. Any of the operations that play musical selections, such as autoplay and demo
play depend on the settings of the Set Volume function. If this
should occur, simply repeat the Set Volume procedure and
choose the New sub-command. This will over-write any erroneous settings.
A typical example of a session to create a new volume list could
include:
New, To create a new volume list
Add, To add Haydn volume 1
Add, To add Haydn volume 2
Add, To add Handel volume 2
Quit, This creates the new current volume for the clock.
Set Volume

The Holmberg Musical Clock 27
In the following illustrations, it will
be assumed that THe Holmberg
musical clock is installed with the
following volumes of music: Haydn
volume 1, Haydn volume 2, Handel
volume 1, Christmas volume 1.
Set Volume
List
New
[List]
Christmas vol 1
Press the Select key until the appropriate command is displayed.
Press Enter to choose the command that is displayed on the LCD.
Press Select to display a volume
name from the current default
volumes list. This is a good way to
verify the clock’s current playable
volumes. Notice that the List command is in brackets to remind you
of the current command.
Command: List
The following section illustrates
each command of the Set Volume
function.

28 Model C-17 Owner’s Guide
Set Volume
[Add]
Handel vol 1
[List]
Haydn vol 1
Press Select to display a volume
name from the clock’s music library which will be added to the
default volume list. Notice that
the Add command is in brackets
to remind you of the current command.
Press the Enter key to quit the List
command.
Press the Enter key to add the
displayed volume to the clock’s
volume list.
Command: Add
[Add]
Haydn vol 2

The Holmberg Musical Clock 29
Set Volume
[ok]
The display will respond with a
message conrming the the volume has been added. Press
Select to go on to the next command.
New
[ok]
Press Select to create a new list.
Any previous volumes in the list will
be deleted.
The system responds with a message conrming that a New volume list has been created. This is
a blank list at this point so you are
new ready to add volumes to the
list.
Command: New

30 Model C-17 Owner’s Guide
Set Volume
Quit
The Status command reports the
number of volumes current programmed into the default list.
Press Enter to exit this command.
Press Enter to quit the Set Volume
function.
Command: Status
Command: Quit
[Status]
Current: 2