Sony DPP-SV55 Service Manual ▷ View online
5-6
DPP-SV55 V1 (UC, CE)
5-3. Mechanical Troubleshooting
Troubles
Possible causes
Remedies
Paper feed failure due to a wear of paper
Replace the K frame assembly.
feed mechanical block.
Paper is not set in the correct position of
Set paper in the correct position.
the paper feed tray.
Detection error of the PE sensor
Check the connection of the PE sensor connector.
Replace the PE-41 board.
Paper is not set in the correct position of
Set paper in the correct position.
the paper feed tray.
Detection error of the JD sensor
Check the connection of the JD sensor connector.
Replace the JD-41 board.
Paper is ejected as blank paper.
Mismatch between paper and ribbon
Use matching paper and ribbon.
Paper is torn off along perforation before
printing.
printing.
Jamming of ink ribbon or paper
Used ribbon was rewound and reused.
After removing the ink ribbon, replace the T-reel
occurs in the unit.
Printed paper was reused.
assembly (because the T-reel assembly may be
Ribbon cartridge cannot be
Paper other than specified was used.
damaged due to jamming).
removed.
Upgrade the firmware to the latest version.
Troubles resulting from specific parts
Refer to the technical memo
White spots or hitting traces
Foreign substance adheres to the roller.
Remove the mechanical deck block and perform the
appear at pitch intervals in the
cleaning of roller.
printing direction, etc.
18.8 mm interval: Pinch roller
20.4 mm interval: Capstan roller
37.7 mm interval: Platen roller
Remove the foreign substance adhered to the
capstan roller using a gummed tape, etc.
Remove the foreign substance adhered to the pinch
roller and platen roller using a cloth dampened with
ethanol.
20.4 mm interval: Capstan roller
37.7 mm interval: Platen roller
Remove the foreign substance adhered to the
capstan roller using a gummed tape, etc.
Remove the foreign substance adhered to the pinch
roller and platen roller using a cloth dampened with
ethanol.
White streaks or scratches
Foreign substance adheres to the surface
Remove the thermal head and remove the foreign
appear in the printing direction.
of thermal head.
substance adhered to the surface using a cloth
dampened with ethanol.
dampened with ethanol.
“No paper” is displayed although
the paper is set in the paper feed
tray.
the paper is set in the paper feed
tray.
Multiple sheets of paper are fed
and jammed as blank paper.
and jammed as blank paper.
A sheet of paper is fed and
jammed in the unit as blank paper.
jammed in the unit as blank paper.
5-7
DPP-SV55 V1 (UC, CE)
5-4. Upgrade
n
Download the latest firmware and obtain the technical memo from the following URL.
Download the latest firmware and obtain the technical memo from the following URL.
URL (Japanese)
→
http://43.7.166.43/?lang=jp&uid=
URL (English)
→
http://43.7.166.43/?lang=en&uid=
1. Firmware
The firmware of the DDP-SV55 is stored in IC102 (flash memory) on the DK-41 board.
The firmware can be upgraded using a PC card by employing flash memory for program storage memory.
The firmware can be upgraded using a PC card by employing flash memory for program storage memory.
2. Upgrade
Upgrade when requiring the improvement in a function (the version up of firmware).
n
Be sure to upgrade the firmware version in the following cases.
. After replacing the DK-41 board.
. After replacing IC102 on the DK-41 board.
Be sure to upgrade the firmware version in the following cases.
. After replacing the DK-41 board.
. After replacing IC102 on the DK-41 board.
5-8
DPP-SV55 V1 (UC, CE)
3. Upgrading method
1.
Copy the latest firmware to the root directory of a PC card.
n
For the PC card, the memory stick in which a memory stick PC card adaptor is used causes no
n
For the PC card, the memory stick in which a memory stick PC card adaptor is used causes no
problem.
2.
Insert the PC card containing the latest firmware into the PC card slot of a printer and connect the
power cord to the printer. (The power LED then lights in red.)
3.
Press the POWER key while pressing the MENU and PRINT keys simultaneously.
4.
Release the keys when “ALL” and “DPOF” LEDs light and when the buzzer “beeps”.
5.
The firmware is upgraded in the order below.
(1) “ALL SELECT” LED blinks.
A file is read from the PC card.
(2) “Memory stick”, “PC card”, and “personal computer” LEDs blink. (“ALL SELECT” and “DPOF”
LEDs light.)
The flash memory is cleared.
(3) “Memory stick”, “PC card”, and “personal computer” LEDs blink. (“ALL SELECT” and “DPOF”
LEDs go off.)
The flash memory is in the write state.
The flash memory is in the write state.
(4) “Memory stick”, “PC card”, and “personal computer” LEDs blink. (Only “ALL SELECT” LEDs
lights.)
The flash memory is in the verification state.
(5) “ALL SELECT” and “DPOF” LEDs blink alternately. Upgrading is completed.
n
Do not pull out the power cord during upgrading. It takes approximately 3 minutes to be completed.
Do not pull out the power cord during upgrading. It takes approximately 3 minutes to be completed.
6.
After completion is confirmed, disconnect the power cord from the printer and take out the PC card
from the printer.
from the printer.
7.
Restart the printer in the service mode.
8.
Confirm that a yellow frame exists in “test1” and press the ENTER key.
9.
Press the Arrow keys (
↑
and
↓
), move the yellow frame to “Check Sum:”, and press the ENTER key.
n
After the “Check Sum value” is displayed on the monitor screen, confirm that the value is the same as
for a technical memo.
After the “Check Sum value” is displayed on the monitor screen, confirm that the value is the same as
for a technical memo.
10. After pressing the ENTER key (
↑
and
↓
), press the Arrow keys and move the yellow frame to
“Test1”. Select “Exit” using Arrow keys (
←
and
→
) and press the ENTER key.
Screen example of check sum value
Check Sum value
Color bar
EEPROM
Set
Default
Release:
Nov/22/2000_17:58:14
CLUT:
2000/09/08_15:05:12
GAMMA:
2000/10/15_21:59:04
Check Sum:
Ox DOCCD8C
Test1
Test2
Test3
Test4
Test5
Test6/7
Exit
DPP-SV55 V1 (UC, CE)
SAFETY CHECK-OUT
After correcting the original service problem,
perform the following safety checks before
releasing the set to the customer :
perform the following safety checks before
releasing the set to the customer :
Check the metal trim, “metallized” knobs, screws,
and all other exposed metal parts for AC
leakage. Check leakage as described below.
and all other exposed metal parts for AC
leakage. Check leakage as described below.
LEAKAGE TEST
The AC leakage from any exposed metal part to
earth ground and from all exposed metal parts to
any exposed metal part having a return to
chassis, must not exceed 3.5 mA. Leakage
current can be measured by any one of three
methods.
earth ground and from all exposed metal parts to
any exposed metal part having a return to
chassis, must not exceed 3.5 mA. Leakage
current can be measured by any one of three
methods.
1. A commercial leakage tester, such as the
Simpson 229 or RCA WT-540A. Follow the
manufacturers’ instructions to use these
instruments.
manufacturers’ instructions to use these
instruments.
2. A battery-operated AC milliammeter. The
Data Precision 245 digital multimeter is
suitable for this job.
suitable for this job.
3. Measuring the voltage drop across a resistor
by means of a VOM or battery-operated AC
voltmeter. The “limit” indication is 5.25 V, so
analog meters must have an accurate low-
voltage scale. The Simpson 250 and Sanwa
SH-63Trd are examples of a passive VOM
that is suitable. Nearly all battery operated
digital multimeters that have a 20 V AC range
are suitable. (See Fig. A)
voltmeter. The “limit” indication is 5.25 V, so
analog meters must have an accurate low-
voltage scale. The Simpson 250 and Sanwa
SH-63Trd are examples of a passive VOM
that is suitable. Nearly all battery operated
digital multimeters that have a 20 V AC range
are suitable. (See Fig. A)
To Exposed Metal
Parts on Set
Parts on Set
Fig A. Using an AC voltmeter to check AC leakage.
AC
voltmeter
(5.25V)
voltmeter
(5.25V)
Earth Ground
0.15
µ
F
1.5 k
Z
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