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Internal Use Only
SERVICE MANUAL
MINI HI-FI SYSTEM
SERVICE MANUAL
MODEL: CM9960 (CM9960, CMS9960F)
MODEL: CM9960
(CM9960, CMS9960F)
CAUTION
BEFORE SERVICING THE UNIT, READ THE "SAFETY PRECAUTIONS"
IN THIS MANUAL.
P/NO : AFN77552475 AUGUST, 2016
CONTENTS
SECTION 1 ........ GENERAL
SECTION 2 ........ CABINET & MAIN CHASSIS
SECTION 3 ........ ELECTRICAL
SECTION 4 ........ MECHANISM (DP17T5)
SECTION 5 ........ REPLACEMENT PARTS LIST
1-1
SECTION 1
SUMMARY
CONTENTS
SERVICING PRECAUTIONS ............................................................................................................................ 1-3
ESD PRECAUTIONS ......................................................................................................................................... 1-5
HIDDEN KEY MODE ......................................................................................................................................... 1-6
SERVICE INFORMATION FOR EEPROM ........................................................................................................ 1-7
PROGRAM DOWNLOAD GUIDE...................................................................................................................... 1-8
SPECIFICATIONS ........................................................................................................................................... 1-11
1-2
SERVICING PRECAUTIONS
NOTES REGARDING HANDLING OF THE PICK-UP
1. Notes for transport and storage
1) The pick-up should always be left in its conductive bag until immediately prior to use.
2) The pick-up should never be subjected to external pressure or impact.
Storage in conductive bag Drop impact
2. Repair notes
1) The pick-up incorporates a strong magnet, and so should never be brought close to magnetic materials.
2) The pick-up should always be handled correctly and carefully, taking care to avoid external pressure and
impact. If it is subjected to strong pressure or impact, the result may be an operational malfunction and/or
damage to the printed-circuit board.
3) Each and every pick-up is already individually adjusted to a high degree of precision, and for that reason
the adjustment point and installation screws should absolutely never be touched.
4) Laser beams may damage the eyes!
Absolutely never permit laser beams to enter the eyes!
Also NEVER switch ON the power to the laser output part (lens, etc.) of the pick-up if it is damaged.
NEVER look directly at the laser beam, and don't allow
contact with fingers or other exposed skin.
5) Cleaning the lens surface
If there is dust on the lens surface, the dust should be cleaned away by using an air bush (such as used
for camera lens). The lens is held by a delicate spring. When cleaning the lens surface, therefore, a cot-
ton swab should be used, taking care not to distort lens.
Pressure
Magnet
Pressure
How to hold the pick-up
Cotton swab
Conductive Sheet
6) Never attempt to disassemble the pick-up.
Spring has excess pressure. If the lens is extremely dirty, apply isopropyl alcohol to the cotton swab.
(Do not use any other liquid cleaners, because they will damage the lens.) Take care not to use too much
of this alcohol on the swab, and do not allow the alcohol to get inside the pick-up.
1-3
NOTES REGARDING COMPACT DISC PLAYER REPAIRS
1. Preparations
1) Compact disc players incorporate a great many ICs as well as the pick-up (laser diode). These components
are sensitive to, and easily affected by, static electricity. If such static electricity is high voltage, components
can be damaged, and for that reason components should be handled with care.
2) The pick-up is composed of many optical components and other high-precision components. Care must be
taken, therefore, to avoid repair or storage where the temperature or humidity is high, where strong magne-
tism is present, or where there is excessive dust.
2. Notes for repair
1) Before replacing a component part, first disconnect the power supply lead wire from the unit
2) All equipment, measuring instruments and tools must be grounded.
3) The workbench should be covered with a conductive sheet and grounded.
When removing the laser pick-up from its conductive bag, do not place the pick-up on the bag. (This is
because there is the possibility of damage by static electricity.)
4) To prevent AC leakage, the metal part of the soldering iron should be grounded.
5) Workers should be grounded by an armband (1 M)
6) Care should be taken not to permit the laser pick-up to come in contact with clothing, in order to prevent
static electricity changes in the clothing to escape from the armband.
7) The laser beam from the pick-up should NEVER be directly facing the eyes or bare skin.
Armband
Resistor
(1 M)
Resistor
Conductive
(1 M)
Sheet
1-4
ESD PRECAUTIONS
Electrostatically Sensitive Devices (ESD)
Some semiconductor (solid state) devices can be damaged easily by static electricity. Such components
commonly are called Electrostatically Sensitive Devices (ESD). Examples of typical ESD devices are integrated
circuits and some field-effect transistors and semiconductor chip components. The following techniques should
be used to help reduce the incidence of component damage caused by static electricity.
1. Immediately before handling any semiconductor component or semiconductor-equipped assembly, drain off
any electrostatic charge on your body by touching a known earth ground. Alternatively, obtain and wear a
commercially available discharging wrist strap device, which should be removed for potential shock reasons
prior to applying power to the unit under test.
2. After removing an electrical assembly equipped with ESD devices, place the assembly on a conductive surface
such as aluminum foil, to prevent electrostatic charge buildup or exposure of the assembly.
3. Use only a grounded-tip soldering iron to solder or unsolder ESD devices.
4. Use only an anti-static solder removal device. Some solder removal devices not classified as "anti-static" can
generate electrical charges sufficient to damage ESD devices.
5. Do not use freon-propelled chemicals. These can generate electrical charges sufficient to damage ESD
devices.
6. Do not remove a replacement ESD device from its protective package until immediately before you are
ready to install it. (Most replacement ESD devices are packaged with leads electrically shorted together by
conductive foam, aluminum foil or comparable conductive materials).
7. Immediately before removing the protective material from the leads of a replacement ESD device, touch the
protective material to the chassis or circuit assembly into which the device will by installed.
CAUTION : BE SURE NO POWER IS APPLIED TO THE CHASSIS OR CIRCUIT, AND OBSERVE ALL OTHER
SAFETY PRECAUTIONS.
8. Minimize bodily motions when handing unpackaged replacement ESD devices. (Otherwise harmless motion
such as the brushing together of your clothes fabric or the lifting of your foot from a carpeted floor can generate
static electricity sufficient to damage an ESD device).
CAUTION. GRAPHIC SYMBOLS
THE LIGHTNING FLASH WITH APROWHEAD SYMBOL. WITHIN AN EQUILATERAL TRIANGLE, IS
INTENDED TO ALERT THE SERVICE PERSONNEL TO THE PRESENCE OF UNINSULATED
"DANGEROUS VOLTAGE" THAT MAY BE OF SUFFICIENT MAGNITUDE TO CONSTITUTE A RISK OF
ELECTRIC SHOCK.
THE EXCLAMATION POINT WITHIN AN EQUILATERAL TRIANGLE IS INTENDED TO ALERT THE
SERVICE PERSONNEL TO THE PRESENCE OF IMPORTANT SAFETY INFORMATION IN SERVICE
LITERATURE.
1-5
HIDDEN KEY MODE
HIDDEN MODE ENTRANCE KEY EXIT KEY
Version Check Front `Stop' + Remote Control Key ` / ' for 5 s Remote Control Key ` / ' for 1.5 s
EEPROM Initial Front `Stop' + Remote Control Key ` ' for 5 s Auto Exit
Option EDIT Front `Stop' + Remote Control Key ` ' for 5 s Front `Stop' + Remote Control Key ` '
APD Test Display Front `Stop' + Remote Control Key `3' for 5 s Auto Exit
Clip Front `Stop' + Remote Control Key `Mute' for 5 s Auto Exit
Disc Lock
Front `Stop' + Remote Control Key `Stop' for 5 s Front `Stop' + Remote Control Key `Stop' for 5 s
On/ Off
Front `Stop' + Remote Control Key `Region EQ' for 5 s Front `Stop' + Remote Control Key `Region EQ' for 5 s
Power Disc Lock
or or
On/ Off
Front `Stop' + Front `Open' for 5 s Front `Stop' + Front `Open' for 5 s
Demo All Key Lock Front `Stop' + Remote Control Key `9' for 5 s Front `Stop' + Remote Control Key `9' for 5 s
Bluetooth Auto Power
Front/ Remote Control Key `Power' for 5 s Front/ Remote Control Key `Power' to SET `Power Off'
On/ Off
Child Safe
Volume 0 (Min) + Front `Enter' for 3 s Volume 0 (Min) + Front `Enter' for 3 s
On/ Off
1-6
SERVICE INFORMATION FOR EEPROM
POWER ON
It is possible at any function.
VFD "NO DISC" status (ex. It is possible at VFD "NO USB" status, too.)
This is an example.
Front `Stop' + Remote control ` '
DETECT NEW EEPROM
push same timing during 5 s (OPTION EDIT SCREEN)
NAME HEX
OPT0 00
FLD "OP00-....."
OPT1 00
OPT2 00
OPT3 00
OPT4 00
Move to appropriate position
OPT5 00
And make changes with remote control
OPT6 00
" , , / , REPEAT" key. OPT7 00
OPT8 00
OPT9 00
OPT10 00
Press `Stop' Key
OPT11 00
OPT12 00
OPT13 00
OPT14 00
VFD "WRITE OK"
Front `Stop' + Remote control ` '
push same timing during 5 s
VFD "E2P CLR"
Completed
1-7
PROGRAM DOWNLOAD GUIDE
1. MAIN MCS PROGRAM (MAIN MCS CHIP)
Download program file name must be HG690_CM9960_YYMMDDX.bin
If security program(Water Wall) is activated on PC, you must save the file to the USB storage device and disable
the security software, then download the file to your set. Downloading file proceeds at USB1 function.
Caution: When downloading the file, you should neither unplug the USB device, change to the other function,
nor power off the device. USB device must be unplugged when the downloading process is completed.
ON VFD DISPLAY SCREEN
1) (Fast) Format USB device.
2) Copy Firmware file to USB device.
NO USB
Insert USB device into USB A Port at USB1 function.
SEARCH
MAIN FIRMWARE
FINISH
AUTO POWER OFF
* The upgrade is 2 minutes progress.
1-8
2. SUB MCS PROGRAM (SUB MCS CHIP)
Download program file name must be HG620_CM9960_SUB_YYMMDDX.bin
If security program(Water Wall) is activated on PC, you must save the file to the USB storage device and disable
the security software, then download the file to your set. Downloading file proceeds at USB2 function.
Caution: When downloading the file, you should neither unplug the USB device, change to the other function,
nor power off the device. USB device must be unplugged when the downloading process is completed.
ON VFD DISPLAY SCREEN
1) (Fast) Format USB device.
2) Copy Firmware file to USB device.
NO USB
Insert USB device into USB B Port at USB2 function.
SEARCH
SUB FIRMWARE
FINISH
AUTO POWER OFF
* The upgrade is 2 minutes progress.
1-9
3. EQ PROGRAM
Download program file name must be EQ_PRG.BIN
If security program(Water Wall) is activated on PC, you must save the file to the USB storage device and disable
the security software, then download the file to your set. Downloading file proceeds at USB1 function.
Caution: When downloading the file, you should neither unplug the USB device, change to the other function,
nor power off the device. USB device must be unplugged when the downloading process is completed.
ON VFD DISPLAY SCREEN
1) (Fast) Format USB device.
2) Copy Firmware file to USB device.
NO USB
Insert USB device into USB A Port at USB1 function.
SEARCH
EQ UP
FINISH
AUTO POWER OFF
* The upgrade is 2 minutes progress.
1-10
SPECIFICATIONS