Denon DCD-F107 Service manual

SERVICE MANUAL

MODEL JP E3 E2 EK K2A E1C E1K EUT

Ver. 4

Please refer to the MODIFICATION NOTICE.

DCD-F107

COMPACT DISC PLAYER

For purposes of improvement, specications and design are subject to change without notice.

•

Please use this service manual with referring to the operating instructions without fail.

•

Some illustrations using in this service manual are slightly different from the actual set.

•

D&M Holdings Inc.

S0164-1V04DM/DG1010

WARNING: Violators will be prosecuted to the maximum extent possible.

SAFETY PRECAUTIONS

The following check should be performed for the continued protection of the customer and service technician.

LEAKAGE CURRENT CHECK

Before returning the unit to the customer, make sure you make either (1) a leakage current check or (2) a line to chassis resistance check. If the leakage current exceeds 0.5 milliamps, or if the resistance from chassis to either side of the power cord is less than 460 kohms, the unit is defective.

LASER RADIATION

Do not stare into beam or view directly with optical instruments, class 3A laser product.

CAUTION

Please heed the points listed below during servicing and inspection.

◎ Heed the cautions!

Spots requiring particular attention when servicing, such as the cabinet, parts, chassis, etc., have cautions indicated on labels or seals. Be sure to heed these cautions and the cautions indicated in the handling instructions.

◎ Caution concerning electric shock!

(1) An AC voltage is impressed on this set, so touching in-

ternal metal parts when the set is energized could cause electric shock. Take care to avoid electric shock, by for example using an isolating transformer and gloves when servicing while the set is energized, unplugging the power cord when replacing parts, etc.

(2)There are high voltage parts inside. Handle with extra

care when the set is energized.

◎ Caution concerning disassembly and

assembly!

Though great care is taken when manufacturing parts from sheet metal, there may in some rare cases be burrs on the edges of parts which could cause injury if fingers are moved across them. Use gloves to protect your hands.

◎ Inspect for safety after servicing!

Check that all screws, parts and wires removed or disconnected for servicing have been put back in their original positions, inspect that no parts around the area that has been serviced have been negatively affected, conduct an insulation check on the external metal connectors and between the blades of the power plug, and otherwise check that safety is ensured.

(Insulation check procedure) Unplug the power cord from the power outlet, disconnect the antenna, plugs, etc., and turn the power switch on. Using a 500V insulation resistance tester, check that the insulation resistance between the terminals of the power plug and the externally exposed metal parts (antenna terminal, headphones terminal, microphone terminal, input terminal, etc.) is 1MΩ or greater. If it is less, the set must be inspected and repaired.

CAUTION

Concerning important safety

parts

◎ Only use designated parts!

The set's parts have specific safety properties (fire resistance, voltage resistance, etc.). For replacement parts, be sure to use parts which have the same properties. In particular, for the important safety parts that are marked z on wiring diagrams and parts lists, be sure to use the designated parts.

◎ Be sure to mount parts and arrange

the wires as they were originally!

For safety reasons, some parts use tape, tubes or other insulating materials, and some parts are mounted away from the surface of printed circuit boards. Care is also taken with the positions of the wires inside and clamps are used to keep wires away from heating and high voltage parts, so be sure to set everything back as it was originally.

Many of the electric and structural parts used in the set have special safety properties. In most cases these properties are difficult to distinguish by sight, and using replacement parts with higher ratings (rated power and withstand voltage) does not necessarily guarantee that safety performance will be preserved. Parts with safety properties are indicated as shown below on the wiring diagrams and parts lists is this service manual. Be sure to replace them with parts with the designated part number.

(1) Schematic diagrams ... Indicated by the z mark. (2) Parts lists ... Indicated by the z mark.

Using parts other than the designated parts could result in electric shock, fires or other dangerous situations.

DCD-F107

DIMENSION

DCD-F107

WIRE ARRANGEMENT

If wire bundles are untied or moved to perform adjustment or parts replacement etc.,be sure to rearrange them neatly as they were originally bundled or placed afterward. Otherwise, incorrect arrangement can be a cause of noise generation.

Wire arrangement viewed from the top

Front Panel side

Back Panel side

DCD-F107

DISASSEMBLY

TOP COVER

LENAPRAERSNARTREWOPROOD

Refer to "DISASSEMBLY 1.DOOR" Refer to "EXPLODED VIEW" Refer to "EXPLODED VIEW"

Refer to "EXPLODED VIEW" LENAPRAERSNARTREWOP

)01M:WEIVDEDOLPXEfo.oN.feR()3C:WEIVDEDOLPXEfo.oN.feR(ROOD

(Ref. No. of EXPLODED VIEW : P1)

AUDIO PCB

FRONT PANEL ASSY

Refer to "EXPLODED VIEW"

Refer to "DISASSEMBLY 2.FRONT PANEL ASSY" INPUT PCB

Refer to "EXPLODED VIEW" (Ref. No. of EXPLODED VIEW : C7)

FRONT PCB

(Ref. No. of EXPLODED VIEW : C1)

POWER PCB

㩷

Refer to "EXPLODED VIEW"

MECHANISM

POWER PCB

Refer to "DISASSEMBLY

㩷

(Ref. No. of EXPLODED VIEW : C6)

3.MECHANISM"

Refer to "EXPLODED VIEW"

CD MECHANISM ASSY

(Ref. No. of EXPLODED VIEW : C5)

CD MAIN PCB

Refer to "EXPLODED VIEW"

CD MAIN PCB

(Ref. No. of EXPLODED VIEW : C4)

The viewpoint of each photograph (photography direction)

［View from above］

Front side

Direction of photograph: A

• Disassemble in order of the arrow of the figure of following flow.

• In the case of the re-assembling, assemble it in order of the reverse of the following flow.

• In the case of the re-assembling, observe "attention of assembling" it.

About the photos used for descriptions in the “DISASSEMBLY” section.

• The direction from which the photographs used herein were photographed is indicated at "Direction of photograph: ***" at the left of the respective photographs.

• Refer to the table below for a description of the direction in which the photos were taken.

• Photographs for which no direction is indicated were taken from above the product.

DCD-F107

1. DOOR

TOP COVER

DOOR

→

Proceeding :

Chucking plate

Drive gear

CD tray

DOOR

(1) Take off the Chucking plate after removing screws.

(2) Open the CD tray by turning the Drive gear clockwise.

(3) Detach the DOOR.

DCD-F107

2. FRONT PANEL ASSY

TOP COVER

DOOR

→

FRONT PANEL ASSY

→

Proceeding :

View from bottom

CN97

cut

FFC Cable

CN52

cut

Please refer to "EXPLODED VIEW" for the disassembly method of each PCB included in FRONT PANEL ASSY.

(1) Remove the screws.

(2) Cut the clamp bands, disconnect the connector wires and FFC Cable.

DCD-F107

3. CD MECHANISM ASSY

Proceeding : CD MECHANISM ASSY

→

TOP COVER

DOOR

→

FRONT PANEL ASSY

→

Direction of photograph: A

Connector wires

Soldering place

Direction of photograph: A

FFC Cable

Laser short-circuit

(1) Cut the clamp bands, disconnect the connector wires. Remove the screws.

(2) Disconnect the connector wires.

(3) Laser short-circuit in Pick-up of CD MECHANISM, then disconnect the FFC Cable.

DCD-F107

DISASSEMBLY OF MECHANIC

Chucking yoke

Chucking plate

Chucking pulley

Screws

Mugnet

(Follow the procedure below in reverse order when reassembling.)

Caution : The optical pickup can damaged by sassily by static electricity charged on human body. Take necessary anti-static

measures when repairing around the optical pickup.

1. Chucking plate

(1) Remove 2 top screws, then detach the Chucking plate.

(2) Detaching the Chucking pulley and chucking yoke by removing the 3 hooks, when abandoning CD MECHA ass’y.

2. CD tray

When abandoning CD MECHA ass’y, please detach the CD tray.

(1) Detach the Sw pin on the CD tray.

(2) Open the CD tray by turning the Drive gear clockwise.

(3) Open the Stopper as shown in the fig., then detach CD tray.

Stopper

CD tray



Drive gear

Stopper

Sw pin

DCD-F107

Note Handling and Replacement of the Laser pick-up

1. Protection of the LD

Short a part of the LD circuit by soldering. After connection to a circuit, remove the short solder.

2. Precautions when handling the laser CD mechanism

• Handle the laser pick-up so that it is not exposed to dust.

• Do not leave the laser pick-up bare. Be sure to cover it.

• If dust adheres on lens of the pick-up, blow it off with a blower brush.

• Do not shock the laser pick-up.

• Do not watch the light of the laser pick-up.

3. Cautions on assembling and adjustment

• Be sure that to the bench, jig, head of soldering iron (with ceramic) and measuring instruments are well grounded.

• Workers who handle the laser pick-up must be grounded.

• The finished mechanism (prior to anchoring in the set) should be protected against static electricity and dust. The mechanism must be stored that damaging outside forces are not received.

• When carrying the finished mechanism, hold it by the chassis body

• For proper operation, storage and operating environment should not contain corrosive gases. For example H CI2 etc. In addition storage environment should not have materials that emit corrosive gases especially from silicic, cyanic, formalin and phenol group. I the mechanism or the set, existence of corrosive gases may cause no rotation in motor.

2S, SO2, NO2,

4. Determining whether the laser pick-up is defective

•

Measure the waveform at RFO-VC on "MCU PCB Unit ". ( For measuring points and waveforms, see pages 26, 27.)

• The laser pick-up is OK if the amplitude level of the measured RFO waveform is between 0.4 and 1.1 Vp-p, defective otherwise.

Protective soldering place for laser diode.

DCD-F107

Diagnostics of optical pickup and replacing traverse unit d

/C: XXXmA/YYYmA

ASER CURRENT

Disc no read, unsteady playback, etc.

Laser drive current (Iop) check

Present value exceeds the initial value by 1.5 times

Traverse Unit replacing

Laser current (Iop) memorizing after replacement

Make failure diagnostics of the Optical Pickup as follows. If the laser drive current (Iop) becomes more than 1.5 times of the initial value, the Optical Pickup should be replaced. The laser drive current initial value is checked by "Iop checked Method" of next page. In case of replacing the Pickup, change the whole part of the Traverse Unit. No mechanical adjustment is necessary after the replacement.

Laser drive current initial value:

･13 flashing

XXX : Initial value : Stored data (EEPROM stored value) YYY : Current value

DCD-F107

SPECIAL MODE

No Key name Function Display

• AC is turned on while pressing the 5 and 2 button

Service mode

same time on DCD-F107.(Model name display)

DCD-F107

Version No. of

1.1

main μ-com

Display mode

Version No. of

1.2

USB μ-com

Display mode

1.3 FLD check mode

2 CD test mode

2.1 Disc loading

• Press the 9 button.

• Press the 9 button while version No. of main

μ-com is displayed.

• When display is version No. of USB μ-com and

the 9 button is pressed, turn on the entire display is flashing with an interval of about 1 second.

• Press the 9 button again in the turn on each

grid of FLD. (Each grid is displayed at interval of 1 second.)

• AC is turned on while pressing the 5 and 2 button

same time on DCD-F107.(Entering the Service mode)

• Press the 2 and

version display, FLD check mode and heat runmode.(CD TEST MODE display)

• Press the DISC/USB button continuously for over 3 seconds to display the version number of main

μ-com.

• Press the 5 button to open the tray.

• Set a disc on the tray, then press the 5 button again to close the tray.

• Press the steps.

q LD ON (with servo still stopped)

13 button. Execute the following

13 button same time while

Ver xxxx

"****" : Version number of main μ-com

USB_Ver ****

"****" : Version number of USB μ-com

13 flashing

00 CD TEST MODE

・13 flashing

2.2 Servo check

w FOCUS ON (disc rotation, tracking off)

If no disc loaded, retry then stop.

e CLV ON

DCD-F107

01 LD ON

02 Focus ON

03 CLV ON

2.2 Servo check

2.3

Key name

Pickup

movement

Function Display

r TRACKING ON

t SUB CODE readout (playback sound output)

• The BER (Block Error Rate) generated in 1 second's time is displayed on the upper tier of the display.

• The playback position (IN/MID/OUT) can be changed by pressing the 8 or 9 button.

• The count of the errors that could not be corrected with the C1 error correction system is displayed.

y When display is as in t and the

pressed, conduct BER (Block Error Rate) display for 2 seconds.

• The BER (Block Error Rate) generated in 10 second's time is displayed of the display.

bPress

second to switch directly to SUB CODE readout in step

・In the stop mode, pickup moves in REV (inwards)

or FWD (outwards) direction when 8 or 9 button pressed.

・When 8 button pressed, move to stop

operation after detection that inner switch has turned on.

・Pickup movement stops when button released.

(Pickup moves while button is pressed.)

13 button continuously for over 1

13 button is

04 Tracking ON

[IN]

NERR######

05 @@

[MID]

ID ERR ######

05 @@

[OUT]

UT ERR ######

05 @@

###### : B.E.R., @@ : T.No, XX:XX : Time

PP ERR ######

XX:XX

ERR *** ***

PPP : Playback position (IN/MID/OUT)

###### : 1

Continuous display of previous time

second's B.E.R.

, *****:

10 second's B.E.R.

2.4 Stop

2.5 All servo on

・When 2 button is pressed, play operation and

servo stop.

・After stopping, conduct reading of auto adjust

values.

・When 2 and 5 button is pressed, all servos turn

on, auto adjustment is performed and switch to playback operation. (Playback sound output)

(NOTE)When the 2 button is pressed for over 1

second while the laser turns on and the laser current is measured.

・13 flashing

00 CD TEST MODE

・13 flashing

@@ : T.No, XX:XX : Time

XX:XX

DCD-F107

Key name

Function Display

Laser current is

2.6 display

・When the 2 button is pressed for over 1 second

while the DCD-F107 is in the stop mode, the laser turns on and the laser current is measured.

・The laser drive current undergoes A/D

conversion for calculation. Decimal values are discarded.

・The first current value is measured 3 seconds

after the laser turns on.

・The current value is updated every 3 seconds. ・Press the 2 button, CD test mode display (2)

reappears.

・Stored data is not cleared, even when the DCD-

F107 is reset.

q Overwriting the stored data

・When the

seconds while the laser current is displayed, the current value is stored in the EEPROM (overwriting the stored data).

・Once rewriting is completed, the display in 2.6

reappears.

・Rewriting is performed upon shipment from the

factory and when the mechanism is replaced.

・Press the 2 button after executing the servo auto

adjustment.

・When 9 button is pressed, the adjustment

values are displayed in the following order.

q FOCUS BALANCE

w FOCUS GAIN

13 button is pressed for over 5

･ 13 flashing

/C: XXXmA/YYYmA

ASER CURRENT

XX : Stored data : EEPROM Stored value YY : Current value

TORED

ASER CURRENT

・13 flashing

OCUS BALANCE

XX : Adjustment value

Adjustment value

2.7 display

e TRACKING BALANCE

r TRACKING GAIN

tFOCUS OFFSET

y TRACKING OFFSET

OCUS GAIN

XX : Adjustment value

RACKING BALANCE

XX : Adjustment value

RACKING GAIN

XX : Adjustment value

OCUS OFFSET

XX : Adjustment value

RACKING OFFSET

XX : Adjustment value

DCD-F107

Key name

Function Display

Adjustment value

2.7 display

Accumulated

2.8

laser on time

display

u RFRP

i Return to q.

(Note)If auto adjustment is not completed, proper

values are not displayed.

・When the DISC/USB and 5 button is pressed

while the DCD-F107 is in the stop mode, the accumulated laser on time is displayed.

・The laser drive times are added and the result is

displayed.

・One count corresponds to 10 minutes. (Values

under 10 minutes are discarded.)

・Count values are stored in the EEPROM every 10

minutes.

・The accumulated laser on time is displayed in

hours.

・Laser ON/OFF is monitored and counted. ・Press the 2 button, CD test mode display (2)

reappears.

・The count values are not cleared, even when the

set is reset.

・Minimum display specification

• No. digits stored in EPROM: 4, 0xFFFF

• No. digits displayed: 5

• When the time exceeds 10922 hours, the stored data is not updated and the value is fixed to 0xFFFF. (The display is fixed to 10922 hours.)

FRP

XX : Adjustment value

・13 flashing

XXXX hour

ASER ON TIME

CD heat run

mode

q Count value is reset

・When the

seconds while the accumulated laser on time is displayed, the count value is reset.

・After resetting is completed, the display in 2.6

(00000 hours on the top line) reappears.

・Count value is reset upon shipment from the

factory and when the mechanism is replaced.

・AC is turned on while pressing the 5 and 2 button

same time on DCD-F107.

・Switches to mode according to button input. ・Press the reverse button to switch the mode while

displaying the version of the main μcom. (Normal heat run mode, Heat run short mode, Automatic mounting mode.) d

・If an error occurs, display the error and stop

operation at that point.

・Number of operations held. ・While heat run, the operation of each button is not

valid except the ON/STANDBY button and pressing the 5 and 2 button same time.

13 button is pressed for over 5

LEAR

ASER ON TIME

DCD-F107

Key name

Function Display

Normal heat run

3.1 mode

・Press the

displayed or H.R.NORMAL is displayed.

・Count this as the 0th heat run repetition.

q Play from the first to last track on disc.

w After disc playback has finished, move pickup

to innermost position and open tray.

e When loader open status detected, close tray

again, re-read TOC and start playback from the first track on the disc.

r The heat run repetition no. is incremented

(increased by 1) when the tray is opened. ※ If the 2 and 5 button is pressed while operat-

13 button while name of the model is

ing, number of heat run is displayed for 3 seconds.

・Model Name display

・H.R.NORMAL display

.R.NORMAL

・Normal heat run mode

Normal display except when 1 light, 3 flashing

q Normal display except when 1 light, 3 flashing

CD XXXX

XXXX : No. of heat run repetitions

e Normal display except when 1 light, 3 flashing

CD XXXX

XXXX : No. of heat run repetitions

Heat run Short

3.2 mode

t Conduct q to e repeatedly.

・Press the

H.R.SHORT is displayed.

・Count this as the 0th heat run repetition.

q Play the last track only on disc.

w After disc playback has finished, move pickup

to innermost position and open tray.

e When loader open status detected, close tray

again, re-read TOC and start playback from the first track on the disc.

r The heat run repetition no. is incremented

(increased by 1) when the tray is opened.

※ If the 2 and 5 button is pressed while oper-

13 button while name of the

ating, number of heat run is displayed for 3 seconds.

・H.R.SHORT display

.R.SHORT

・Heat run Short mode

Normal display except when 1 light, 3 light

q Normal display except when 1 light, 3 light

CD XXXX

XXXX : No. of heat run repetitions

e Normal display except when 1 light, 3 light

CD XXXX

XXXX : No. of heat run repetitions

t Conduct q to e repeatedly.

DCD-F107

Key name

Function Display

Automatic

3.3 mounting mode

3.4 Error display

・Press the

H.R.CHACKING is displayed.

・Count this as the 0th heat run repetition.

q Play the last track only on disc.

w The heat run repetition no. is incremented

(increased by 1) when the tray is opened. ※ If the 2 and 5 button is pressed while oper-

ating, number of heat run is displayed for 3 seconds.

e Conduct q repeatedly.

E1-00 : Disc cannot be detected

E1-01 : Tracking offset adjustment not possible

E1-02 : Focus offset adjustment not possible

E2-00 : Focus servo dropped during playback.

E2-01 : Focus servo dropped during searching.

E2-03 : Focus servo dropped during TOC reading.

E2-05 : Focus servo dropped during manual

E2-10 : Subcode can no longer be read during

E2-11 : Subcode can no longer be read during

E2-12 : Subcode can no longer be read during

E2-14 : Subcode cannot be read during pause

E2-15 : Subcode cannot be read during manual

E3-00 : TOC could not be read within specified

E3-01 : PVD/SVD analysis could not be

E4-04 : Search time out

E4-05 : Error in communications with CD decoder

E5-00 : Inner switch not on

E6-00 : Inner switch not off

E8-00 : Tray is not opened by the specified time.

E8-01 : Tray is not closed by the specified time.

E9-01 : Other error

13 button while name of the

search.

playback

searching

TOC reading

time

completed within specified time

・H.R.CHACKING display

.R.CHACKING

・Heat run short mode

Normal display except when 1 flashing, 3 flashing

qNumber of heat run is display

CD XXXX

XXXX : No. of heat run repetitions

・READING, CLOSEdisplay

Normal display except when 1 flashing, 3 flashing

wNumber of heat run is display

CD XXXX

XXXX : No. of heat run repetitions

・

13 with mode light or flashing

CD EX-XX

X-XX : Error cord

DCD-F107

Key name

Function Display

3.4 Error display

Main μ-com

Version up

mode

q Number of heat run is display

・Press the 9 button while the error is displayed. ・ No. heat runs is displayed for 5 seconds, the error

display reappears.

w The track no. and time when the error occurred is

displayed

・Press the 8 button while the error is displayed. ・ The track no. and time when the error occurred is

displayed for 5 seconds, then error display reappears.

・AC is turned on while pressing the 5 and 2 button

same time on DCD-F107.(Entering the Service mode)

･ While displaying model name, when 2 and the

ON/STANDBY button are pressed simultaneously, the tray opens.

• If an the 5 or

closed, a disc will be loaded and Version up will be started.

• " FileError" is displayed when not found upgrade file and the tray is opened.

13 button is pushed and a tray is

13 with mode light or flashing

CD XXXX

XXXX : No. of heat run repetitions

・Error display reappears after 5 seconds. See 3.4.

13 with mode light or flashing.

CD 01

・Error display reappears after 5 seconds. See 3.4.

YSTEM VUP ALL

etDisc -> Close

q During a file search

YSTEM VUP ALL

ileSearch

w During a file check

01:47

4.1 Start version up

4.2 End version up

Cold start

(Initialize)

・After Version UP is completed, a tray is opened

and it stops in

・AC is turned on while pressing the 5 and 9

button same time on DCD-F107.

・The system is reset, and once this is completed

the unit is set to the normal mode.

DIMMER : 100% DISC/USB : DISC REMOTE/BROWSE : REMOTE

・The laser current initial value and laser

accumulated on time is not cleared.

YSTEM VUP ALL

ileCheck

e During deletion

YSTEM VUP ALL

rasig

r Writing

YSTEM VUP ALL

riting

t When a file is not found

YSTEM VUP ALL

ileError

YSTEM VUP ALL

omplete

INITIALIZE

DCD-F107

Key name

USBμ-com

Version up

mode

Function Display

・AC is turned on while pressing the 5 and 2 button

same time on DCD-F107.(Entering the Service mode)

･ While displaying model name, when 9 and the

ON/STANDBY button are pressed simultaneously, the tray opens.

• If an the 5 or closed, a disc will be loaded and Version up will be started.

• "FileError" is displayed when not found upgrade file and the tray is opened.

13 button is pushed and a tray is

OLERO VUP

etDisc -> Close

q During a file search

YSTEM VUP ALL

ileSearch

w During a file check

YSTEM VUP ALL

ileCheck

e During deletion

6.1 Start version up

6.2 End version up

EEPROM TEST

mode

・After Version UP is completed, a tray is opened

and it stops in

・Press POWER SW while simultaneously pressing

ON/STANDBY and DISC/US button.

・POWER LED lights to the orange (TEST start). ・After EEPROM TEST, in the case of OK, LED

lights to the green.

・After EEPROM TEST, in the case of NG, LED

lights to the red.

・Mode is cancelled with POWER OFF.

YSTEM VUP ALL

rasig

r Writing

YSTEM VUP ALL

riting

t When a file is not found

YSTEM VUP ALL

ileError

OLERO VUP

omplete

DCD-F107

Special mode transition diagram



Start

Ver UP

1/3 or

USB Ver UP mode

“Ver UP USB” display

9 +

ON/STANDBY



Start

Ver UP

1/3 or

Main Ver UP mode

“Ver UP Main” display

ON/STANDBY

Ver.display

USB μ-com

2+1/3

FL all light

The entire display is

flashing with an interval

of about 1 second.

5+2+AC_ONService mode

Model Name display

1/3

8 or 9

“DCD-F107”

Main μ-com

Ver.display

H.R.NORMAL display

1/3

2+1/3

CD test mode

FL tube

The display for each grid.

(It displays at intervals

of 1 second.)

Main Ver. display reappears.

2+1/3

H.R.SHORT display

1/3

H.R.CHACKING display

1/3

H.R.NORMAL operation

TOC read → playback

title-all of the disc. →

OPEN → CLOSE →

TOC read

It displays repeatedly.

DCD-F107

H.R.SHORT operation

TOC read → playback

title-end of the disc. →

OPEN → CLOSE →

TOC read

It displays repeatedly.

H.R.CHACKING operation

TOC read → OPEN →

CLOSE → TOC read

It displays repeatedly.

TROUBLE SHOOTING

FLOW CHART NO.1

The power cannot be turned on.

㸣

Is Power LED lit? 㸢No

㸣Yes

Is the +3.3V_NSW line voltage normal? 㸢No

㸣Yes

Is the +5_SYS line voltage normal? 㸢No

㸣Yes

Is the "H" level MCU Reset to Pin(77) of IC11? 㸢No

㸣Yes

Is normal state restored when once unplugged power cord is plugged again after several seconds?

㸣Yes

Check each voltage regulator circuit and service it if defective.

㸢No

FLOW CHART NO.2

+3.3V_D is not outputted.

㸣

Is +7V_DRV voltage supplied to Pin(1) of IC93? 㸢No

Check if there is any leak or short-circuiting rectifier circuit of SUB Power transformer, and service it if defective. (T901,IC94,IC95,Q905-Q909,D930,D931,D934-D936)

Check IC11,IC12and the periphery circuit, and service it if defective.

Check if there is any leak or short-circuiting rectifier circuit of Power transformer, and service it if defective. (Main Trans,IC81,D917-D923)

㸣Yes

Check IC93 and the periphery circuit, and service it if defective.

FLOW CHART NO.3

The fluorescent display tube does not light up.

㸣

Is +3.3V_D. voltage supplied to Pins(37) of F701? 㸢No Check the +3.3V_D line and service it if defective.

㸣Yes

Is the voltage of approximately +42V supplied to Pin(38) of F701?

㸣Yes

Is the voltage of approximately +7V supplied to Pin(1),(43) of F701?

㸣Yes

Check the fluorescent display tube control signal of a microcomputer. (FL_RST,FL_CS,FL_CLK,FL_MDT)

㸢No

㸢No Check the FL1/FL2 line and service it if defective.

Check D924-927,Q904 and periphery circuit, and service it if defective.

DCD-F107

FLOW CHART NO.4

The key operation is not functioning.

㸣

Are the contact point and the installation state of the key switches (S701-S704,S706-S708) normal?

㸣Yes

When pressing each switches (S701-S704,S706S708), do the voltage of Pin (4),(5),(6),(99),(100) of IC11 decrease?

㸣Yes

Replace IC11.

㸢No

FLOW CHART NO.5

No operation is possible from the remote control unit.

㸣

Are the System Connector (DENON BUS) Cables nomal?

㸣Yes

Is +5V_SYS voltage supplied to Pin(8) of IC96? 㸢No

㸣Yes

Re-install the switches (S701-S704,S706-S708) correctly or replace the poor switch.

Check the switches (S701-S704,S706-S708) and their periphery, and service it if detective.

Check IC94 and the periphery circuit, and service it if defective.

Check Control Signal Pin(2) DBTXD,Pin(3) DBRXD of JK93,JK94

㸣Yes

Refer to DRA-F107 TROUBLESHOOTING_Remote Control

㸢No

FLOW CHART NO.6

The disc tray cannot be opened and closed.

㸣

Is the normal control voltage inputted to Pin(6) of IC11? Refer to "FLOW CHART NO.4" <The key operation is not functioning.>

㸣Yes

Check the line between CN23 and IC14, and service it if defective.

㸢No Replace the "OP/CL" button (S706).

Check IC96,IC11 and the periphery circuit, and service it if defective.

DCD-F107

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