Denon DVD-1920 Service Manual

For Europe model
Ver. 2
SERVICE MANUAL
Please refer to the MODIFICATION NOTICE.
MODEL DVD-1920
DVD AUDIO-VIDEO / SUPER AUDIO CD PLAYER
注 意
サービスをおこなう前に、このサービスマニュアルを 必ずお読みください。本機は、火災、感電、けがなど に対する安全性を確保するために、さまざまな配慮を おこなっており、また法的には「電気用品安全法」に もとづき、所定の許可を得て製造されております。 従ってサービスをおこなう際は、これらの安全性が維 持されるよう、このサービスマニュアルに記載されて いる注意事項を必ずお守りください。
For purposes of improvement, specifications and design are subject to change without notice.
Some illustrations using in this service manual are slightly different from the actual set.
Denon Brand Company, D&M Holdings Inc.
TOKYO, JAPAN
本機の仕様は性能改良のため、予告なく変更すること があります。 補修用性能部品の保有期間は、製造打切後8年です。
修理の際は、必ず取扱説明書を参照の上、作業を行っ てください。
本文中に使用しているイラストは、説明の都合上現物 と多少異なる場合があります。
X0257 V.02 DE/CDM 0509
DVD-1920

TABLE OF CONTENTS

SPECIFICATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
LASER BEAM SAFETY PRECAUTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
IMPORTANT SAFETY PRECAUTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
STANDARD NOTES FOR SERVICING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
CABINET DISASSEMBLY INSTRUCTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
HOW TO INITIALIZE THE DVD PLAYER. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
FIRMWARE RENEWAL MODE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
TROUBLESHOOTING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
BLOCK DIAGRAMS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
SCHEMATIC DIAGRAMS / CBA'S AND TEST POINTS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .31
WAVEFORMS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45
WIRING DIAGRAM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46
LEAD IDENTIFICATIONS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47
EXPLODED VIEWS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48
PARTS LIST . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50
Manufactured under license from Dolby Laboratories. “Dolby” and the double-D symbol are trademarks of Dolby Laboratories.
2
DVD-1920

SPECIFICATIONS

Item Conditions Unit Nominal Limit
1. Video Output 75 load Vpp 1.0 ± 0.1
2. Optical Digital Out dBm -18
3. Audio (PCM)
3-1. Output Level 1 kHz, 0 dB, 47k load Vrms 2.0
3-2. S/N 47k load dB 115
3-3. Freq. Response
DVD fs = 48 kHz ± 0.5 dB, 47k load Hz 20 ~ 22 k
CD fs = 44.1 kHz ± 0.5 dB, 47k load Hz 20 ~ 20 k
3-4. THD+N
DVD 1 kHz, 0 dB, 47k load % 0.004
CD 1 kHz, 0 dB, 47k load % 0.004
Notes:
1. All Items are measured without pre-emphasis unless otherwise specified.
2. Power supply: 200 - 240 V, 50 Hz
3. Ambient Temperature: 5 °C - 40 °C
2
2
3
DVD-1920

LASER BEAM SAFETY PRECAUTIONS

This DVD player uses a pickup that emits a laser beam.
Do not look directly at the laser beam coming from the pickup or allow it to strike against your skin.
The laser beam is emitted from the location shown in the figure. When checking the laser diode, be sure to keep your eyes at least 30 cm away from the pickup lens when the diode is turned on. Do not look directly at the laser beam.
CAUTION: Use of controls and adjustments, or doing procedures other than those specified herein, may result in hazardous radiation exposure.
Drive Mechanism Assembly
Laser Beam Radiation
Laser Pickup
Turntable
CAUTION- CLASS
-
TION WHEN OPEN. DO NOT VIEW
DIRECTLY WITH OPTICAL INSTRUMENTS
1M
LASER RADIA
-
Location: Top of DVD mechanism.
4

IMPORTANT SAFETY PRECAUTIONS

DVD-1920
Product Safety Notice
Some electrical and mechanical parts have special safety-related characteristics which are often not evi­dent from visual inspection, nor can the protection they give necessarily be obtained by replacing them with components rated for higher voltage, wattage, etc. Parts that have special safety characteristics are identified by a ! on schematics and in parts lists. Use of a substitute replacement that does not have the same safety characteristics as the recommended replacement part might create shock, fire, and/or other hazards. The Product’s Safety is under review contin­uously and new instructions are issued whenever appropriate. Prior to shipment from the factory, our products are carefully inspected to confirm with the recognized product safety and electrical codes of the countries in which they are to be sold. However, in order to maintain such compliance, it is equally impor­tant to implement the following precautions when a set is being serviced.
Precautions during Servicing
A. Parts identified by the ! symbol are critical for
safety. Replace only with part number specified.
B. In addition to safety, other parts and assemblies
are specified for conformance with regulations applying to spurious radiation. These must also be replaced only with specified replacements. Examples: RF converters, RF cables, noise block­ing capacitors, and noise blocking filters, etc.
C. Use specified internal wiring. Note especially:
1)Wires covered with PVC tubing
2)Double insulated wires
3)High voltage leads
D. Use specified insulating materials for hazardous
live parts. Note especially:
1)Insulation tape
2)PVC tubing
3)Spacers
4)Insulators for transistors
E. When replacing AC primary side components
(transformers, power cord, etc.), wrap ends of wires securely about the terminals before solder­ing.
F. Observe that the wires do not contact heat produc-
ing parts (heatsinks, oxide metal film resistors, fus­ible resistors, etc.).
G. Check that replaced wires do not contact sharp
edges or pointed parts.
H. When a power cord has been replaced, check that
5 - 6 kg of force in any direction will not loosen it.
I. Also check areas surrounding repaired locations.
J. Use care that foreign objects (screws, solder drop-
lets, etc.) do not remain inside the set.
K. Crimp type wire connector
The power transformer uses crimp type connectors which connect the power cord and the primary side of the transformer. When replacing the trans­former, follow these steps carefully and precisely to prevent shock hazards. Replacement procedure
1)Remove the old connector by cutting the wires at a point close to the connector.
Important: Do not re-use a connector. (Discard it.)
2)Strip about 15 mm of the insulation from the ends of the wires. If the wires are stranded, twist the strands to avoid frayed conductors.
3)Align the lengths of the wires to be connected. Insert the wires fully into the connector.
4)Use a crimping tool to crimp the metal sleeve at its center. Be sure to crimp fully to the complete clo­sure of the tool.
L. When connecting or disconnecting the internal
connectors, first, disconnect the AC plug from the AC outlet.
5
Safety Check after Servicing
Examine the area surrounding the repaired location for damage or deterioration. Observe that screws, parts, and wires have been returned to their original positions. Afterwards, do the following tests and con­firm the specified values to verify compliance with safety standards.
1. Clearance Distance
When replacing primary circuit components, confirm specified clearance distance (d) and (d’) between sol­dered terminals, and between terminals and surround­ing metallic parts. (See Fig. 1)
Table 1 : Ratings for selected area
AC Line Voltage Clearance Distance (d), (d’)
200 to 240 V
3 mm(d)
6 mm(d’)
DVD-1920
Chassis or Secondary Conductor
Primary Circuit Terminals
dd'
Fig. 1
Note: This table is unofficial and for reference only.
Be sure to confirm the precise values.
2. Leakage Current Test
Confirm the specified (or lower) leakage current between B (earth ground, power cord plug prongs) and externally exposed accessible parts (RF termi­nals, antenna terminals, video and audio input and output terminals, microphone jacks, earphone jacks, etc.) is lower than or equal to the specified value in the table below.
Measuring Method (Power ON) :
Insert load Z between B (earth ground, power cord plug prongs) and exposed accessible parts. Use an AC voltmeter to measure across the terminals of load Z. See Fig. 2 and the following table.
Table 2: Leakage current ratings for selected areas
AC Line Voltage Load Z Leakage Current (i)
200 to 240 V
2kRES.
Connected in
parallel
50k RES.
Connected in
parallel
i0.7mA AC Peak
i2mA DC
i0.7mA AC Peak
i2mA DC
Exposed Accessible Part
Z
One side of
B
Power Cord Plug Prongs
One side of power cord plug
Antenna terminals
A/V Input, Output
AC Voltmeter (High Impedance)
prongs (B) to:
RF or
Fig. 2
Note: This table is unofficial and for reference only. Be sure to confirm the precise values.
6

STANDARD NOTES FOR SERVICING

DVD-1920
Circuit Board Indications
1. The output pin of the 3 pin Regulator ICs is indicated as shown.
Top View
Out
2. For other ICs, pin 1 and every fifth pin are indicated as shown.
Pin 1
3. The 1st pin of every male connector is indicated as shown.
Pin 1
Input
In
Bottom View
5
10
Pb (Lead) Free Solder
When soldering, be sure to use the Pb free solder.
How to Remove / Install Flat Pack-IC
1. Removal
With Hot-Air Flat Pack-IC Desoldering Machine:
1. Prepare the hot-air flat pack-IC desoldering machine, then apply hot air to the Flat Pack-IC (about 5 to 6 seconds). (Fig. S-1-1)
Fig. S-1-1
Instructions for Connectors
1. When you connect or disconnect the FFC (Flexible Foil Connector) cable, be sure to first disconnect the AC cord.
2. FFC (Flexible Foil Connector) cable should be inserted parallel into the connector, not at an angle.
FFC Cable
Connector
CBA
* Be careful to avoid a short circuit.
2. Remove the flat pack-IC with tweezers while applying the hot air.
3. Bottom of the flat pack-IC is fixed with glue to the CBA; when removing entire flat pack-IC, first apply soldering iron to center of the flat pack-IC and heat up. Then remove (glue will be melted). (Fig. S-1-6)
4. Release the flat pack-IC from the CBA using tweezers. (Fig. S-1-6)
CAUTION:
1. The Flat Pack-IC shape may differ by models. Use an appropriate hot-air flat pack-IC desoldering machine, whose shape matches that of the Flat Pack-IC.
2. Do not supply hot air to the chip parts around the flat pack-IC for over 6 seconds because damage to the chip parts may occur. Put masking tape around the flat pack-IC to protect other parts from damage. (Fig. S-1-2)
7
DVD-1920
3. The flat pack-IC on the CBA is affixed with glue, so be careful not to break or damage the foil of each pin or the solder lands under the IC when removing it.
Hot-air Flat Pack-IC Desoldering
CBA
Masking Tape
Tweezers
Machine
Flat Pack-IC
Fig. S-1-2
With Soldering Iron:
1. Using desoldering braid, remove the solder from all pins of the flat pack-IC. When you use solder flux which is applied to all pins of the flat pack-IC, you can remove it easily. (Fig. S-1-3)
Flat Pack-IC
2. Lift each lead of the flat pack-IC upward one by one, using a sharp pin or wire to which solder will not adhere (iron wire). When heating the pins, use a fine tip soldering iron or a hot air desoldering machine. (Fig. S-1-4)
Desoldering Braid
Soldering Iron
Fig. S-1-3
Sharp Pin
Fine Tip Soldering Iron
3. Bottom of the flat pack-IC is fixed with glue to the CBA; when removing entire flat pack-IC, first apply soldering iron to center of the flat pack-IC and heat up. Then remove (glue will be melted). (Fig. S-1-6)
4. Release the flat pack-IC from the CBA using tweezers. (Fig. S-1-6)
Fig. S-1-4
8
DVD-1920
With Iron Wire:
1. Using desoldering braid, remove the solder from all pins of the flat pack-IC. When you use solder flux which is applied to all pins of the flat pack-IC, you can remove it easily. (Fig. S-1-3)
2. Affix the wire to a workbench or solid mounting point, as shown in Fig. S-1-5.
3. While heating the pins using a fine tip soldering iron or hot air blower, pull up the wire as the solder melts so as to lift the IC leads from the CBA contact pads as shown in Fig. S-1-5.
4. Bottom of the flat pack-IC is fixed with glue to the CBA; when removing entire flat pack-IC, first apply soldering iron to center of the flat pack-IC and heat up. Then remove (glue will be melted). (Fig. S-1-6)
5. Release the flat pack-IC from the CBA using tweezers. (Fig. S-1-6)
Note: When using a soldering iron, care must be
taken to ensure that the flat pack-IC is not being held by glue. When the flat pack-IC is removed from the CBA, handle it gently because it may be damaged if force is applied.
Hot Air Blower
2. Installation
1. Using desoldering braid, remove the solder from the foil of each pin of the flat pack-IC on the CBA so you can install a replacement flat pack-IC more easily.
2. The “
3. Solder all pins of the flat pack-IC. Be sure that
” mark on the flat pack-IC indicates pin 1.
(See Fig. S-1-7.) Be sure this mark matches the 1 on the PCB when positioning for installation. Then presolder the four corners of the flat pack-IC. (See Fig. S-1-8.)
none of the pins have solder bridges.
Example :
Pin 1 of the Flat Pack-IC is indicated by a " " mark.
Fig. S-1-7
To Solid Mounting Point
CBA
Tweezers
Iron Wire
Soldering Iron
Fig. S-1-5
Fine Tip Soldering Iron
Flat Pack-IC
or
Presolder
Flat Pack-IC
CBA
Fig. S-1-8
Fig. S-1-6
9
Instructions for Handling Semi­conductors
Electrostatic breakdown of the semi-conductors may occur due to a potential difference caused by electrostatic charge during unpacking or repair work.
1. Ground for Human Body
Be sure to wear a grounding band (1 M) that is properly grounded to remove any static electricity that may be charged on the body.
2. Ground for Workbench
Be sure to place a conductive sheet or copper plate with proper grounding (1 M) on the workbench or other surface, where the semi-conductors are to be placed. Because the static electricity charge on clothing will not escape through the body grounding band, be careful to avoid contacting semi-conductors with your clothing.
DVD-1920
<Incorrect>
<Correct>
CBA
Grounding Band
1M
1M
CBA
Conductive Sheet or Copper Plate
10

CABINET DISASSEMBLY INSTRUCTIONS

1. Disassembly Flowchart
This flowchart indicates the disassembly steps to gain access to item(s) to be serviced. When reassembling, follow the steps in reverse order. Bend, route, and dress the cables as they were originally.
[1] Top Cover
[2] Front Unit
[3] Tray Panel
[6] Rear Panel
[7] DVD Main CBA Unit
[4] Function CBA
[5] Front Assembly
ID/
Loc.
No.
[13]
[14]
[15]
Part
Loader Base
Power PCB Holder
Main PCB Holder
DVD-1920
Removal
Remove/*Unhook/
Fig.
No.
D8 4(S-11) ---
D8 2(S-12) ---
D8 (S-13) ---
Unlock/Release/
Unplug/Desolder
Note
[10] DVD Mechanism
[8] 5.1ch Amp CBA
[9] Jack PCB Holder
[13] Loader Base
[15] Main PCB Holder
[11] LED CBA
[12] AV CBA
[14] Power PCB Holder
2. Disassembly Method
ID/
Loc.
No.
[1] Top Cover D1 5(S-1) ---
[2] Front Unit D2
[3] Tray Panel D2 *2(L-4) 1
[4]
[5]
Part
Function CBA
Front Assembly
Fig.
No.
*2(L-1), *2(L-2), *3(L-3), *CN2001
D3 6(S-2) ---
D3 ---------- ---
Removal
Remove/*Unhook/
Unlock/Release/
Unplug/Desolder
Note
1
(1)
Note:
(1) Identification (location) No. of parts in the figures
(2) Name of the part
(3) Figure Number for reference
(4) Identification of parts to be removed, unhooked,
unlocked, released, unplugged, unclamped, or desoldered. P = Spring, L = Locking Tab, S = Screw, CN = Connector * = Unhook, Unlock, Release, Unplug, or Desolder e.g. 2(S-2) = two Screws (S-2), 2(L-2) = two Locking Tabs (L-2)
(5) Refer to “Reference Notes.”
(2)
(3)
(4)
(5)
About tightening screws
When tightening screws, tighten them with the following torque.
Screws Torque
(S-1), (S-2), (S-3), (S-4), (S-5), (S-6A), (S-7), (S-8), (S-9), (S-10), (S-11), (S-12), (S-13)
(S-6B) 0.38 ± 0.04 N·m
0.45 ± 0.05 N·m
[6] Rear Panel D4 9(S-3), (S-4), (S-5) ---
2(S-6A), (S-6B),
DVD Main
[7]
CBA Unit
5.1ch Amp
[8]
CBA
Jack PCB
[9]
Holder
DVD
[10]
MechanismD5D6
[11] LED CBA D7 *CN2102 ---
[12] AV CBA D7 4(S-9), (S-10) ---
*CN201, *CN301,
D5
*CN401, *CN601, *CNS01
D5 (S-6), 2(L-5), *CN7101 ---
D5 2(S-7) ---
4(S-8)
2
2 3
11
Reference Notes
1. CAUTION 1: Locking Tabs (L-1), (L-2), (L-3) and (L-4) are fragile. Be careful not to break them.
1) Release two Locking Tabs (L-1), then release
two Locking Tabs (L-2).
2) Release three Locking Tabs (L-3).
3) Disconnect connector CN2001 and remove the
Front Assembly.
2. CAUTION 2: Electrostatic breakdown of the laser diode in the optical system block may occur as a potential difference caused by electrostatic charge accumulated on cloth, human body etc., during unpacking or repair work. To avoid damage of pickup follow next procedures.
1) Short the three short lands of FPC cable with
solder before removing the FFC cable (CN201) from it. If you disconnect the FFC cable (CN201), the laser diode of pickup will be destroyed. (Fig. D5)
2) Disconnect Connectors (CN301), (CN401),
(CN601) and (CNS01). Remove two screws (S-6A) and (S-6B), and lift the DVD Main CBA Unit. (Fig. D5)
3. CAUTION 3: When reassembling, confirm the FFC cable (CN201) is connected completely. Then remove the solder from the three short lands of FPC cable. (Fig. D5)
(L-2)
(L-1)
(L-3)
[4] Function CBA
DVD-1920
[3] Tray Panel
(L-4)
(L-4)
(L-1)
CN2001
(L-2)
[2] Front Unit
Fig. D2
(S-2)
(S-2)
[1] Top Cover
(S-1)
(S-1)
(S-1)
Fig. D1
[5] Front Assembly
[6] Rear Panel
(S-3)
(S-5)
(S-3)
Fig. D3
(S-4)
(S-3)
12
Fig. D4
DVD-1920
[8] 5.1ch Amp CBA
[9] Jack PCB Holder
(L-5)
Short the three short lands by soldering. (Either of two places.)
(S-6)
CN7101
[7] DVD Main CBA Unit
(S-7)
CNS01
(S-6B)
CN201
A
(S-6A)
CN601
CN301
CN401
[11] LED CBA
CN2102
(S-11)
[14] Power PCB Holder
(S-12)
(S-9)
(S-9)
(S-10)
[12] AV CBA
Fig. D7
(S-11)
[13] Loader Base
[15] Main PCB Holder
Connector
(S-8)
(S-13)
View for A
Fig. D5
(S-8)
Fig. D8
[10] DVD Mechanism
Fig. D6
13
3. How to Eject Manually
1. Remove the Top Cover.
2. Rotate the roulette in the direction of the arrow as shown below.
Rotate this roulette in the direction of the arrow
A
DVD-1920
View for A
14

HOW TO INITIALIZE THE DVD PLAYER

To put the program back at the factory-default, initialize the DVD player as the following procedure.
1. Press [1], [2], [3], [4], and [DISPLAY] buttons on the remote control unit in that order. Fig. a appears on the screen.
"
" differ depending on the models.
*******
MODEL : *******
Version Region
: *.**
: *
EXIT: POWEREEPROM CLEAR : CLEAR
Fig. a
"
" differ depending on the models.
*******
2. Press [CLEAR] button on the remote control unit. Fig. b appears on the screen.
DVD-1920
MODEL : *******
Version Region
: *.**
: *
EXIT: POWEREEPROM CLEAR : CLEAR
EEPROM CLEAR : OK
Fig. b
When “OK” appears on the screen, the factory default will be set.
3. To exit this mode, press [POWER OFF] button.
15

FIRMWARE RENEWAL MODE

DVD-1920
1. Turn the power on and remove the disc on the tray.
2. To put the DVD player into version up mode, press [9], [8], [7], [6], and [SEARCH MODE] buttons on the remote control unit in that order. The tray will open automatically. Fig. a appears on the screen and Fig. b appears on the VFD.
"
" differ depending on the models.
*******
F/W Version Up Mode Model No : *******
Please insert a DISC
for F/W Version Up.
VERSION : *.**
EXIT: POWER
Fig. a Version Up Mode Screen
Fig. b VFD in Version Up Mode
The DVD player can also enter the version up mode with the tray open. In this case, Fig. a will be shown on the screen while the tray is open.
3. Load the disc for version up.
4. The DVD player enters the F/W version up mode automatically. Fig. c appears on the screen and Fig. d appears on the VFD. If you enter the F/W for different models, “Disc Error” will appear on the screen, then the tray will open automatically.
"
" differ depending on the models.
*******
"
" differ depending on the models.
*******
(*2)
F/W Version Up Mode
VERSION : ************.ab6 Completed
SUM : 7ABC
Model No : ******* VERSION : *.**
Fig. e Completed Program Mode Screen
Fig. f VFD upon Finishing the Programming Mode (Example)
At this time, no button is available.
6. Remove the disc on the tray.
7. Unplug the AC cord from the AC outlet. Then plug it again.
8. Turn the power on by pressing the [POWER ON] button and the tray will close.
9. Press [1], [2], [3], [4], and [DISPLAY] buttons on the remote control unit in that order. Fig. g appears on the screen.
"
" differ depending on the models.
*******
MODEL : *******
Version Region
: *.**
: *
(*1)
F/W Version Up Mode Model No : *******
VERSION : ************.ab6 Reading...
VERSION : *.**
Fig. c Programming Mode Screen
Fig. d VFD in Programming Mode (Example)
The appearance shown in (*1) of Fig. c is described as follows:
No. Appearance State
1 Reading... Sending files into the memory
2 Erasing... Erasing previous version data
3 Programming... Writing new version data
5. After programming is finished, the tray opens automatically. Fig. e appears on the screen and the checksum in (*2) of Fig. e appears on the VFD (Fig. f).
EXIT: POWEREEPROM CLEAR : CLEAR
Fig. g
10. Press [CLEAR] button on the remote control unit. Fig. h appears on the screen.
"
" differ depending on the models.
*******
MODEL : *******
Version Region
: *.**
: *
EXIT: POWEREEPROM CLEAR : CLEAR
EEPROM CLEAR : OK
Fig. h
When “OK” appears on the screen, the factory default will be set. Then the firmware renewal mode is complete.
11. To exit this mode, press [POWER OFF] button.
16
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