Philips CDR600/00/17 Скачать руководство пользователя страница 38 | Manualshive

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Diagnostic Software

GB 34

CDR600

6.

6.3 Electrical service diagnostics

Figure 6-2

6.3.1 Description

The intention of the electrical service diagnostics is to show the
software versions present in the player and to direct the dealer
towards defective internal units. The units are : the CDR main
board, the CDR loader, the CD loader in case of a CDR775 and
the keyboard/display board. A sequence of tests is executed
automatically. Some of the tests can be aborted or skipped
without the result being taken into account. External tools or
disassembly of the unit is not necessary to get the diagnostic
information. Pressing keys [PLAY/PAUSE] and [F FWD]
simultaneously while switching on the unit, starts the test.
Switching off the unit ends the test.

6.3.2 Requirements to perform the test

• Working keyboard to start up the test.
• Working local display to check the output messages.
• A CD-DA disc with a minimum of 3 tracks in all trays to

perform the disc test.

6.3.3 Description of the tests

Player information
In this part of the test the following important information can be
checked without removing the cover :
• Recorder ID.
• SW-version back end of player.
• SW-version CDR loader.
• SW-version CD loader (only for CDR775).

CDR MAIN
BOARD TEST

ELECTRICAL SERVICE DIAGNOSTICS

(software versions, test for defective components)

PLAYER
INFORMATION

YES

NO

Tests OK?

If power ON,

switch power OFF

Load CD-DA disc (SBC444A)

Press <PLAY> + <F FWD>

simultaneously and switch ON unit

Display :

"PLAYER ID"
"SW VERSION BACK END"
"SW VERSION CDR LOADER"

(CDR775

"SW VERSION CD LOADER"

)

Display :

"DTST1"

DRAM test (7702)

Display :

"DTST2"

FLASH CHECKSUM test (7702)

Display :

"DTST3"

FLASH ERASE test (7702)

Display :

"DTST4"

CODEC test (7702)

Display :

"DTST5"

CDR LOADER
COMMUNICATION test

Display :

"DTST6"

*

CD LOADER
COMMUNICATION test

PASS OR FAIL

PASS OR FAIL

PASS OR FAIL

PASS OR FAIL

PASS OR FAIL

PASS OR FAIL

Display :

"DERRn"

n = failed test

Display next
failed test

ABORT TEST

Press <F FWD>

ABORT TEST

Press <F FWD>

ABORT TEST

Press <F FWD>

ABORT TEST

Press <F FWD>

ABORT TEST

Press <F FWD>

LOADER TESTS

Display shows current disc time

CDR LOADER TEST
CD-DA disc must be loaded

ABORT TEST

Press <F FWD>

YES

NO

Test OK?

Display :

"BERR1"

or

"NO CDDA"

or

"NO DISC"

Display shows current disc time

CD LOADER TEST *
CD-DA disc must be loaded

YES

NO

Test OK?

Display :

"BERR2"

or

"NO CDDA"

or

"NO DISC"

* FOR CDR775 ONLY

ABORT TEST

Press <F FWD>

Press <F FWD>

Display segments blink at f=1kHz

DISPLAY TEST

Press <F FWD>

DISPLAY TEST

Press <F FWD>

Display shows name of pressed keys

KEYBOARD & RC TEST

KEYBOARD &
RC TEST

To end test, switch OFF unit

* FOR CDR775 ONLY

CL 96532076_014.eps

290799

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Содержание CDR600/00/17

Страница 1: ...al photocopying or otherwise without the prior permission of Philips CDR602 00S TABLE OF CONTENTS SERVICING For servicing CDR600 and CDR602 the set can be divided into two parts 1 Except for the CD R W module all workshops can repair the set on component level The Switched Mode Power Supply unit is available as a sparepart but can also be repaired on component level 2 The CD R W module can only be...

Страница 2: ...dB between 20Hz and 20kHz typical 93dB S N ratio A weighted 98dB typical 102dB S N ratio unweighted 93dB typical 95dB Dynamic range 92dB at 1kHz typical 96dB 90dB between 20Hz and 20kHz typical 96dB THD N 82dB between 20Hz and 20kHz typical 88dB 1 3 2 Cinch analog input output monitor path Measured with Audio precision system one Input voltage is 500Vrms Output voltage 2Vrms 2dB 0dB signal Frequen...

Страница 3: ...de levensduur drastisch doen verminderen Zorg ervoor dat u tijdens reparatie via een polsband met weerstand verbonden bent met hetzelfde potentiaal als de massa van het apparaat Houd componenten en hulpmiddelen ook op ditzelfde potentiaal I AVVERTIMENTO Tutti IC e parecchi semi conduttori sono sensibili alle scariche statiche ESD La loro longevita potrebbe essere fortemente ridatta in caso di non ...

Страница 4: ...Warnings and Servicing Hints GB 4 CDR600 2 SERVICING HINTS In the set chip components have been applied For disassembly and assembly check the figure below ...

Страница 5: ...Warnings and Servicing Hints GB 5 CDR600 2 ...

Страница 6: ...rsor control in Menu Prog review mode EASY JOG rotate previous next track Play and Program mode recording level control recording selects settings menu on ENTER push plays selected tracks selects settings in menu mode programs track numbers STORE MENU enters Menu mode stores Menu settings CANCEL DELETE deletes tracks from a program deletes text in Menu mode returns to a higher level in the menu PH...

Страница 7: ...ecording ANALOG analog input selected OPTICAL I optical input I selected for external recording DIGITAL I digital input I selected for external recording SYNC synchronized recording active MANUAL manual recording active DISPLAY messages Messages as listed and explained here may appear on the display for your guidance General READING reading disc information OPEN opening tray CLOSE closing tray NO ...

Страница 8: ...ORD to start manual recording finalizing or erasing START SOURCE to start synchronized recording from a source e g CD player FINALIZED CD when trying to record on a finalized CDR or a prerecorded CD UNFINALIZE PRESS ENTER when trying to record on a finalized CDRW PROF SOURCE when a professional source is connected Play PROGRAM program mode selected ALBUM TITLE will be followed by album title TRACK...

Страница 9: ...r erasing must be given with ENTER key ERASE ALL OK when confirmation for erasing must be given with ENTER key ERASE MEMORY when waiting for confirmation for erasing a disc MEMORY VIEW when selecting text review per unfinalized disc in memory MEMORY EMPTY when REVIEW is selected while no text is in memory AUTO TRACK when selecting auto track increment ON or OFF ON AutoTrack increment on OFF AutoTr...

Страница 10: ...not use the CD recorder under extremely damp conditions If the CD recorder is placed in a cabinet make sure that a one inch space remains free on all sides of the CD recorder player for proper ventilation Important Do not position the CD recorder on top of other equipment that might heat it up e g receiver or amplifier Connections general For recording the following inputs are present Digital opti...

Страница 11: ...ource ANALOG Digital connections Direct digital coaxial connection This connection is required for direct recording from a digital coaxial source e g a CD player DVD DAT 1 Connect a digital coaxial cable between the DIGITAL IN socket on the set and the DIGITAL OUT socket of the digital source Recording can now be done via the digital coaxial input DIGITAL 1 Direct digital optical connection This c...

Страница 12: ...s voltage as shown on the type plate corresponds to your local mains voltage If it does not consult your dealer or service organisation 2 Make sure all connections have been made before switching on the mains supply 3 Plug the power cord supplied into the AC MAINS connector and the CD recorder then into the wall socket 4 Press ON OFF The CD recorder will switch on be displayed Notes If the CD reco...

Страница 13: ... plays CD RW or program in random order REPEAT repeat play Number alphabet keys 0 9 selects a track by number selects character for text input TRACK INCR ement increases track numbers during recording SCROLL activates scrolling of text over the display CDR selects CD recorder CD selects CD player can be used to control a separate Philips CD player 2 starts CD RW play O previous track Play and Prog...

Страница 14: ...nsert a CD CDR or CDRW in the appropriate recess in the tray label side up 3 Press OPEN CLOSE to close the tray see also Playing a CD CLOSE lights up followed by READING the display will show the type of disc that has been inserted 0 If a blank or partly recorded CDR or unfinalized CDRW is inserted the CD recorder will calibrate the disc for optimum recording During this process the display will f...

Страница 15: ...e recording procedure is the same for CDRs and CDRWs 0 CD text cannot be recorded from an external CD player Text information is not available on the output of the CD player 0 There must be at least 7 seconds of recording time left on the disc otherwise you will not be able to enter record standby mode DISC FULL will then show on the display 0 If the display indicates COPY PROTECT no digital recor...

Страница 16: ...ntire LP or cassette on CD Preparing 1 Place an unfinalized recordable disc absolutely free of scratches and dust particles in the CD recorder tray 2 Press SOURCE repeatedly to select the type of connection you made to your source of recording Examples CD player is connected with its digital out connector directly to the digital in connector of your CD recorder connection is DIGITAL I CD player is...

Страница 17: ...pe of connection you made to your source of recording Examples CD player is connected with its digital out connector directly to the digital in connector of your CD recorder connection is DIGITAL I CD player is connected with its analog out connectors directly to analog in connectors of your CD recorder connection is ANALOG Turntable is connected with its analog out connectors to amplifier receive...

Страница 18: ...dly to select the type of connection you made to your source of recording Examples CD player is connected with its digital out connector directly to the digital in connector of your CD recorder connection is DIGITAL I CD player is connected with its analog out connectors directly to analog in connectors of your CD recorder connection is ANALOG Turntable is connected with its analog out connectors ...

Страница 19: ...or CDR W CDR W changes to CD on display Finalizing will take at least 2 4 minutes Notes During finalization the CD recorder will not accept operating commands When a CDR has been finalized no more recordings can be added Unfinalizing CDRW discs For CDRW discs only If you want to make more recordings or erase tracks on a finalized disc you must unfinalize it first The index of the disc content will...

Страница 20: ...SE DISC and PRESS RECORD will light up 0 If the disc is finalized CD will appear on the display after inserting a CDRW in the recorder The recorder will ask you to confirm unfinalizing first Confirm by pressing the EASY JOG ENTER key or ENTER on the remote control 2 Press RECORD The display will show the total countdown time and ERASE The entire disc will be erased Erasing an entire disc may take ...

Страница 21: ...ack STEP Programming 1 In Stop mode press PROGRAM to enter Program mode PROG flashes and PROGRAM followed by track information appears on the display 2 Select the desired track numbers by turning the EASY JOG ENTER key left or right and store by pressing ENTER or Key in a track number with the number keys and press ENTER to confirm For 2 digit numbers press the keys in rapid succession The track w...

Страница 22: ...RTIST TR 1 TITLE TR 1 ARTIST TR N TITLE TR N TITLE CD 1 TITLE CD 2 TITLE CD 3 TITLE CD ON OFF L 100 R 100 MAIN MENU LEVEL 2 LEVEL 1 A B C D E REM TRACK TIME DIGITAL OPTICAL ANALOG PROG SHUFFLE REPEAT SCAN I I CD RW SYNC MANUAL RECORD REM TOTAL ALL TRACK TIME STEP TRACK 1 2 3 4 5 6 7 8 9 10 11 12 13 14 TEXT EDIT REM TRACK TIME DIGITAL OPTICAL ANALOG PROG SHUFFLE REPEAT SCAN I I CD RW SYNC MANUAL RE...

Страница 23: ...inalized the CD Text will be written on the disc and removed from the recorder s memory With the MEMORY VIEW function you can view delete the CD text in the recorder s memory for each unfinalized disc The amount of memory used is displayed each time the tray opens with an unfinalized CDR W inserted e g MEMORY 9 1 Press STORE MENU TEXT EDIT will appear on the display 2 Rotate the EASY JOG ENTER key...

Страница 24: ...chosen Input label flashing CHECK INPUT try using a Philips Audio CDR W Recording is distorted make sure the recording level is correct 20 second pause between recordings see Autostart recording Recorder does not react switch the ON OFF button on the front of the recorder off and back on DISC RECOVER on display a power failure has occurred during recording the CD recorder is attempting to repair t...

Страница 25: ...10 12V 11 8V 8003 at conn F934 of CDR main board 1 VDC2 2 VFTD 3 VDC1 4 SYS_RESET 5 IIC_DATA 6 GROUND 7 IIC_CLK 8 DISPL_INT 9 GROUND 10 D5V 8004 1 LEFT_HP_OUT 2 GROUND 3 RIGHT_HP_OUT 8001 at conn 1400 of CDR main board 1 GROUND 2 DIG_OUT_C 3 GROUND 4 EXT_DIG_IN 5 EXT_OPT_IN 6 GROUND 7 D5V 8 KILL 9 LEFT_IN 10 GROUND 11 RIGHT_IN 12 RIGHT_OUT 13 GROUND 14 LEFT_OUT Pin 1 indicated by All Wires are 1 1...

Страница 26: ...R SUPPLY UNIT ON OFF STBY LED HEADPHONE IR BOARD DISPLAY BOARD 76 77 78 79 81 82 85 86 1001 I O BOARD Pl Torx 3x10 Pl Torx 3x10 Pl Torx 3x10 Pl Torx 3x10 Pl Torx 3x10 Torx M3x6 Torx M3x6 Torx M3x6 Torx M3x6 Torx M3x6 Torx M3x6 Torx M3x15 Torx M3x6 Filter FTD 1005 97 98 40 41 99 100 301 312 2x 317 318 76 77 78 79 RC282921 01 8001 EXPLODED VIEW ...

Страница 27: ...ING POSSIBILITY OF HIGH VOLTAGE 300V ON HEAT SINK EVEN AFTER REMOUNTING OF PCB DISCHARGE ELCAP 2121 Put the CDR player s rear side facing you Remove screw 205 mains connector to back plate 266 Undo the 2 wire connections on PSU Remove 3 screws 189 191 PSU board to bottom cabinet 181 Unlock snap on spacer 186 Remove PSU Undo flex connection to CDR main board 1001 Remove 3 screws 200 202 connecting ...

Страница 28: ...DR60PLL ATIPSYNC A1 A2 CALF ALPHA0 TLN MIRN FEN REN RE CONTROL LINES EFM TIMING GENERATOR F934 2 WIRES 2 WIRES FLASH ROM 7703 DRAM 7702 DSA CDR DATA BUS ADDRESS BUS SUBCODE BUS I2S BUS 1 DOBM CDR I2S BUS 2 4 L3 BUS CODEC UDA1341TS ADC DAC 7406 DIGITAL AUDIO SIGNAL PROCESSOR MACE2 SAA7399 BASIC ENGINE PROCESSOR MAD0 MAD7 MA8 MA17 7270 7701 ADDRESS BUS DATA BUS A1 A20 D16 D31 I2C BUS SYS RESET FLEX ...

Страница 29: ... 3 4 5 6 7 8 9 10 11 12 1 2 3 4 5 6 7 8 9 10 B C D A NEXT STOP E F G H I A B C D E F G H I 0100 H10 1050 H6 1101 B9 1102 C11 1103 C11 1104 C11 1105 B10 1106 B11 F143 22p 2109 4K7 3100 4K7 1104 EVQ21 F114 3101 F153 VDC1 F151 5V 7 70 71 72 73 74 75 76 77 78 79 8 80 9 40 55 56 57 58 59 6 60 61 62 63 64 65 66 67 68 69 4 41 42 43 44 45 46 47 48 49 5 50 51 52 53 54 25 26 27 28 29 3 30 31 32 33 34 35 36 ...

Страница 30: ...Electrical and Circuit Diagrams GB 30 5 CDR600 DISPLAY BOARD FRONT VIEW DISPLAY BOARD BACK VIEW CL 96532084_007 eps 300899 ...

Страница 31: ...0 TSOP1736 GND 1 OUT 3 VS 2 GND_A 3104 123 4240 PB DISPLAY 4240 CDR 770 1200 EH S 1 2 HEADPHONE IR BOARD CIRCUIT DIAGRAM HEADPHONE IR BOARD BOTTOM VIEW HEADPHONE IR BOARD TOP VIEW ON OFF STBY LED BOARD CIRCUIT DIAGRAM C A B C 1300 A3 1301 B1 1302 C3 6300 A2 F300 A3 F301 A3 F302 B2 1300 PH B 1 2 F303 B2 1 2 3 4 1 2 3 4 A B F301 F302 F300 5 1 4 3 6 LTL 1CHPE 6300 1 2 1302 SPPH23 2 3104 123 4240 PB D...

Страница 32: ...NPUT LEFT 1000 7 7 DIGOUT 1 7009 BC847B 2015 33p 3028 4R7 7008 BC847B 1000 11 11 2024 22n 1001 A YKC21 3421 5 2 1 3035 2K2 7007 BC847B 1000 6 6 3033 100R BC847B 7006 4 2019 10u F112 F106 1000 4 22n 2018 F121 22n 2016 F109 5VDS F104 F105 2K2 1000 14 14 1 3037 100R 3038 4R7 1000 1 2028 33p 3025 100R 3036 3029 33p 2029 75R 2 150p 2025 68R 3020 YKC21 3699 1002 A 3 1 3023 100R 3K3 3021 1000 8 8 3K3 302...

Страница 33: ...Electrical and Circuit Diagrams GB 32a 5 CDR600 I O BOARD BOTTOM VIEW I O BOARD TOP VIEW ...

Страница 34: ... be YK type BZX84 C24 68u Euro WW 0101 Unpolarized Unpolarized Polarized F102 HEATSINK 0125 3127 1R 8Vr 1K5 3150 470R 3124 F101 HCS0528 0101 1 2 3141 10K 12V 0208 F105 10K 3110 3202 3K3 100n 2161 3119 F112 F224 2n2 2131 1K2 3222 F216 F213 68R 3225 10R 3142 7253 BC327 25 F223 F203 1 2 4 3 F214 F218 UF1922P4 5120 Vfb 8 Vref 2232 UC3842A 7110 1 COMP 5 GND 3 Isense 6 OUTPUT 4 RtCt 7 VCC 2 F121 5130 5V...

Страница 35: ...al and Circuit Diagrams GB 32c 5 CDR600 POWER SUPPLY UNIT CDR3 ECO TOP VIEW 1 2 3 4 5 6 7 8 9 10 11 1 2 3 4 5 6 7 8 9 10 11 POWER SUPPLY UNIT CDR3 ECO BOTTOM VIEW 1 2 3 4 5 6 7 8 9 10 11 1 2 3 4 5 6 7 8 9 10 11 ...

Страница 36: ...Electrical and Circuit Diagrams GB 32d 5 CDR600 Personal notes Personal notes ...

Страница 37: ...perienced even non technical dealer will can perform the test Tests are executed automatically without need for external tools or disassembly of the unit This test checks the CDR main board using the same tests as the electrical service diagnostics program Only the result of the test PASSED or ERROR will be shown on the display Pressing keys F FWD and REWIND simultaneously while switching on the u...

Страница 38: ...loader only for CDR775 CDR MAIN BOARD TEST ELECTRICAL SERVICE DIAGNOSTICS software versions test for defective components PLAYER INFORMATION YES NO Tests OK If power ON switch power OFF Load CD DA disc SBC444A Press PLAY F FWD simultaneously and switch ON unit Display PLAYER ID SW VERSION BACK END SW VERSION CDR LOADER CDR775 SW VERSION CD LOADER Display DTST1 DRAM test 7702 Display DTST2 FLASH CH...

Страница 39: ... grooves control The disc test is performed by audio play back of 5 seconds at the beginning middle and end of the disc CDR loader test During the test the current disc time is shown In case of an error the message BERR1 will be displayed and the F FWD key must be pressed to continue with the following test Pressing the F FWD key also aborts this test CD loader test For CDR775 only During the test...

Страница 40: ...s by pressing F FWD One has to stop these tests pressing REWIND before it is possible to open the tray again Depending on the action the display reads OPEN OPENED CLOSE or BUSY 6 5 DC erase service mode Figure 6 4 6 5 1 Description This test is initiated by pressing ERASE and RECORD simultaneously while switching on the unit The player will erase a complete CD RW disc including PMA and ATIP lead o...

Страница 41: ...LOCK SIGNAL 8MHz SUPPLY VOLTAGES ELECTRICAL SERVICE DIAGNOSTICS DISPLAY TEST KEYBOARD TEST POWER SUPPLY VOLTAGES ELECTRICAL SERVICE DIAGNOSTICS REPLACE CDR MODULE IF DERRn OR BERRn ERROR OCCURS CHECK MECHANICAL SERVICE DIAGNOSTICS REPLACE CDR MODULE IF ERROR OCCURS TRAY CD R DISC LOADED NO NO NO NO NO YES YES YES YES YES CD RW DISC LOADED YES STBY LED PRESS DISPLAY MAINS MAINS CABLE CHECK STANDBY ...

Страница 42: ...F DERRn OR BERRn ERROR OCCURS CHECK WIRING I O BOARD FLEX CONNECTION 5V pin 8 conn 1000 KILL TRANSISTORS 7006 7007 7008 7009 AUDIO ANALOG OUT ELECTRICAL SERVICE DIAGNOSTICS REPLACE CDR MODULE IF DERRn OR BERRn ERROR OCCURS AUDIO CONNECTIONS CABLES CHECK I O BOARD FLEX CONNECTION 5V pin 8 conn 1000 ELECTRICAL SERVICE DIAGNOSTICS REPLACE CDR MODULE IF DERRn OR BERRn ERROR OCCURS AUDIO CONNECTIONS CA...

Страница 43: ...LECTRICAL SERVICE DIAGNOSTICS REPLACE CDR MODULE IF DERRn OR BERRn ERROR OCCURS CHECK WIRING NO YES DISPLAY CD T O C INFO SEE CD DA DISC FAULT FINDING CHECK ELECTRICAL SERVICE DIAGNOSTICS REPLACE CDR MODULE IF DERRn OR BERRn ERROR OCCURS DISPLAY BOARD SEE FAULT FINDING GUIDE DISPLAY BOARD EASY JOG KNOB I2C COMMUNICATION ELECTRICAL SERVICE DIAGNOSTICS KEYBOARD TEST AUDIO CONNECTIONS CABLES CHECK IC...

Страница 44: ...ON READING ELECTRICAL SERVICE DIAGNOSTICS REPLACE CDR MODULE IF DERRn OR BERRn ERROR OCCURS CHECK DISC DIRT SCRATCHES DAMAGED NO POWER SUPPLY VOLTAGES ELECTRICAL SERVICE DIAGNOSTICS REPLACE CDR MODULE IF DERRn OR BERRn ERROR OCCURS CHECK WIRING NO YES DISPLAY CD T O C INFO SEE CD DA DISC FAULT FINDING CHECK ELECTRICAL SERVICE DIAGNOSTICS REPLACE CDR MODULE IF DERRn OR BERRn ERROR OCCURS IF DISC CO...

Страница 45: ...TD generates the grid and segment scanning for the FTD generates the scanning grid for the key matrix input for remote control All the communication runs via the serial bus interface I2C The display controller uses an 8Mhz resonator as clock driver 6 5 1 5 1 6 26 27 28 29 30 31 32 34 35 36 37 41 14 12 11 17 18 20 21 22 42 43 44 45 46 47 48 49 50 51 10 25 23 24 4 74 73 72 71 70 69 68 67 66 65 3 64 ...

Страница 46: ...gives an indication of how these signals should look like Figure 8 2 I2C signals FTD drive lines Filament voltage Should measure 3 8V 10 VDC1 VDC2 between pins 1 2 3 and pins 45 46 47 pins 1 2 and pins 48 49 for CDR570 930 of the FTD 1113 Grid lines Level and timing of all grid lines G1 G15 can be checked either at the FTD itself or at the display controller Grid lines G13 G14 and G15 each have an...

Страница 47: ...peration is identical to the ordinary keys Without being pressed pin 4 of the easy jog maintains the low level pin 5 the high level When pressed the scanning signal goes through the closed contact of pins 4 and 5 and can be checked at both pins IR receiver remote control In the CDR570 930 the IR receiver TSOP1736 6101 is mounted on the display board In the CDR770 that same IR receiver 6200 is moun...

Страница 48: ...119 5 I2C CLK at conn 1119 7 1121 1 for CDR570 930 FTD DRIVE LINES Filament voltage 3V8 10 between pins 1 2 3 and pins 45 46 47 pins 1 2 and pins 48 49 for CDR 570 930 of the FTD 1113 Grid lines see test instructions Segment lines see test instructions ELECTRICAL SERVICE DIAGNOSTICS Local display test YES YES YES KEY FUNCTIONS REMOTE CONTROL NO NO CHECK KEY MATRIX LINES see test instructions ELECT...

Страница 49: ...t of load or input voltage variations The controlling device UC3842 is an integrated pulse width modulator A clock signal initiates power pulses at a fixed frequency The termination of each output pulse occurs when a feedback signal of the inductor current reaches a threshold set by the error signal In this way the error signal actually controls the peak inductor current on cycle by cycle basis 72...

Страница 50: ...es The current consumption of the circuit increases to about 17mA depending on the external loads of the IC At first the capacitor at the Vcc pin will discharge because the primairy auxiliary voltage coming from winding7 9 is below the Vcc voltage At some moment during t2 the primary auxiliary voltages reaches the same level as Vcc This primary auxiliary voltage now determines the Vcc voltage t3 r...

Страница 51: ...tranformer The inductance of the tranformer now tries to maintain the current which has been flowing through it at a constant level The polarity of the voltage from the transformer therefore becomes reversed This results in a current flow through the tranformer s secondary winding via the diodes electrolytic capacitors and the load This current is also ramp shaped but decreasing 3 TimeDEAD phase w...

Страница 52: ...1 Drain voltage at testpoint T632 ch2 Drain current ch3 Gate voltage at testpoint T669 PM3394B ch3 ch1 CH1 1 CH3 50mV ALT MTB5 00us 0 90dv ch1 1 3 T ch1 Drain voltage T632 ch2 Oscillator voltage at pin 4 of IC7612 PM3394B ch3 ch1 CH1 1 CH3 20mV ALT MTB5 00us 0 90dv ch1 1 3 T ch1 Drain voltage T632 ch3 Sense voltage T612 ...

Страница 53: ...he MOSFET Regulation circuit The regulation circuit comprises opto coupler 7200 which isolates the error signal from the control IC on the primary side and a reference component 7201 The TL431 7201 can be represented by two components a very stable and accurate reference diode a high gain amplifier A 2 5V R K TL431 will conduct from cathode to anode when the reference is higher than the internal r...

Страница 54: ...check the functionality of the following components 1120 2121 2125 2126 2127 6102 7125 check oscillator on pin 4 IC7110 is the osc 30kHz working check Vcc on pin 7 IC7110 Vcc 12V 16V is power supply ticking check the load on the secundairy output check overload circuit 6141 7141 7150 check 2121 2133 2134 3123 3134 6130 6132 replace 7110 check 3201 3202 3203 3204 3205 3206 3207 3208 7131 7201 repla...

Страница 55: ...t the output can be attenuated in case of search activities B1LF B2LF CONN1000 IC7010 satellite photo diodes B1 B2 current output BCLK IC7701 R3898A IC7300 I2S1 BitCLocK from DASP to CDR60 playback and record BE_RESET IC7701 R3261 IC7270IC7701 R3716 Basic Engine RESET active high BIASC IC7008 R3056 BIAS Current switch CDRW output BKPT CONN1819 R3907 IC7701 JTAG mode select debug mode BreaKPoinT C1...

Страница 56: ...munication between DASP and CD player in CDR775 DSA_DATA_CDR IC7270 R3246 R3813 IC7701 CONN1830IC7270 R3246 R3767 Data Strobe Acknowledge serial communication between MACE2 and DASP for CDR DSA_STR_CD IC7701 R3835 R3832 CONN1708IC7701 R3835 C2734 Data Strobe Acknowledge serial communication between DASP and CD player in CDR775 DSA_STR_CDR IC7270 R3245 IC7701 CONN1830IC7270 R3245 R3768 Data Strobe ...

Страница 57: ...2S_WS_AI IC7701 R3743 IC7406 I2S4 Word CLocK for CODEC ADC for CDR950 Analog Input record from analog source I2S_WS_AO IC7701 R3894B IC7406 I2S2 Word CLocK for CODEC DAC for CDR950 Analog Output I2S_WS_CD CONN1708 C2740 R3833 IC7701 I2S3 Word CLocK from CD player record n 2 CDR775 only I2S_WS_MIC CONN1708 C2740 R3833 IC7701 I2S3 Word CLocK from MICrophone CDR950 only I2S1_MS IC7270 R3910 IC7701 I2...

Страница 58: ...ENable external ROM output enable line active low PW R3081 IC7008 Write Power signal to OPC input of MACE2 PWB IC7001C IC7016 drive signal to XDAC s for write and erase current sources and VCAGAIN PWD IC7016 IC7002BIC7016 IC7002C drive signal from XDAC for write and erase current sources PWMAX IC7016 R3073 PW MAXimum signal from DAC used for determining set point for laser power during writing PWM...

Страница 59: ...701 TRACE99 test tool receive data TRACE99_TXD IC7701 CONN1818 TRACE99 test tool transmit data TRAYIN IC7270 IC7240 move TRAY IN line active low TRAYOUT IC7270 IC7240 move TRAY OUT line active low TRAYSW CONN1200 R3747CONN1200 R3748 TRAY SWitch signal from loader assy TRAYSWF R3748 C2214 IC7270 Filtered TRAY SWitch signal low is completely out or in TXD_TOOL IC7701 CONN1818 Transmit of UART for te...

Страница 60: ... 13114 TACT SWITCH 1107 4822 276 13114 TACT SWITCH 1108 4822 276 13114 TACT SWITCH 1109 4822 276 13114 TACT SWITCH 1111 4822 276 13114 TACT SWITCH 1112 4822 276 13114 TACT SWITCH 1113 2722 171 07174 DISPLAY CDR60x 1114 4822 276 13114 TACT SWITCH 1115 4822 276 13114 TACT SWITCH 1116 4822 276 13114 TACT SWITCH 1117 4822 276 13114 TACT SWITCH 1118 4822 276 13114 TACT SWITCH 1120 4822 276 13114 TACT S...

Страница 61: ...9080 4822 051 20008 CHIP JUMPER 0805 9081 4822 051 10008 CHIP JUMPER 1206 COILS 1110 2422 540 98423 CERAMIC RESON 8MHZ CSTS MG03 DIODES 6100 9340 548 47115 PDZ3 3B 6300 4822 130 82978 LED LTL 16KPE TRANSISTORS 7100 4822 130 60511 BC847B 7203 4822 130 60511 BC847B 7204 4822 130 60511 BC847B 7999 5322 130 60845 BC807 25 INTEGRATED CIRCUITS 7104 3104 123 94761 TMP87CH74F 6851 MICROPROC 10 2 2 I O BOA...

Страница 62: ...0 25W 3117 4822 053 21684 680kΩ 5 0 5W 3119 2322 595 90023 VDR 800V 3123 4822 050 21803 18kΩ 1 0 6W 3124 4822 117 12181 470Ω 20 0 5W 3125 4822 117 10833 10kΩ 1 0 1W RESISTORS 3126 4822 116 80176 1Ω 5 0 5W 3127 4822 116 80176 1Ω 5 0 5W 3128 4822 116 80676 1 5Ω 5 0 5W 3129 4822 117 10833 10kΩ 1 0 1W 3134 4822 050 21803 18kΩ 1 0 6W 3141 4822 117 10833 10kΩ 1 0 1W 3142 4822 051 20109 10Ω 5 0 1W 3150 4...

Страница 63: ...41344 BC337 40 7252 4822 130 60373 BC856B 7253 4822 130 41246 BC327 25 7254 4822 130 60511 BC847B INTEGRATED CIRCUITS 7110 9322 145 88682 UC3842A PWM CONTROLLER 7131 4822 130 91451 CQY80NG OPTO COUPLER 7201 4822 209 81397 TL431CLPST PRECISION REFERENCE 7249 4822 209 82112 MC7908CT VOLTAGE REGULATOR 7260 8222 675 06290 BA12T VOLTAGE REGULATOR ...

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