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Faultfinding Guide

GB 62

CDR779

8.

When the regulation circuit is interrupted due to an error in
the control loop, the regulated output voltage will increase
(overvoltage). This overvoltage is sensed on the primary
winding 7-9. When an overvoltage longer than 2.0

µ

s is

detected, the output is disabled until Vcc is removed and then
re-applied. The power supply will come in a hiccup mode as
long as the error in the control loop is present.

Secondary rectifier/smoothing circuit

There are 5 rectifier/smoothing circuits on the secondary
side. Each voltage depends on the number of windings of the
transformer.
The -8V supply is regulated by voltage regulator 7249.

On/off circuit

In off mode pin 1 and pin 2 of connector 0206 are connected.
The high voltage (-8V, +12V) over opto coupler 7200 forces
this one to conduct . IC 7110 is switched off

8.2.8

Troubleshooting PSU CDR3-ECO

Figure 8-16

Faultfinding diagram

TROUBLE SHOOTING POWER SUPPLY

power supply OK

Check DC voltages

+5V +12V -8V VFTD(-38V) VDC1-VDC2(3V8)

OK

YES

YES

5V OK

5V NOK

NOK

NOK

NOK

NOK

OK

NOK

NOK

Disconnect the power supply from the MAIN Board

Connect a dummy load resistor 6,8 ohm 10W (min 5W)

on the 5V and

power supply OK

check - main board

- front board
- modem board

OK

NO

NO (Vsource = +- 0.8V)

OK

OK

OK

OK

Check the +5V

check 6210-2210-2253-5210

check the fault voltage path

connect the mains inlet to a mains

isolated variac

turn input voltage up and check across

C2121 the voltage

this voltage should be +/- 1,41 x Vin ac

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
replace 7110
check circuit around Ic7110

check 3125-3126-3127-3128
replace 7125

check 2102 - 3102
replace 7110

check the voltage on the source of 7125

Vsource = 1,3V ?

Disconnect diode 6150
start variac from 0V and turn-up slowly
measure the 5V output
If the 5V becoming higher than 5V, the regulator
circuit are damaged

After the power repaired check the 3,3V

Check DC voltages

+5V +12V -8V VFTD(-38V) VDC1-VDC2(3V8)

CL 06532151_024.eps

271100

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Содержание CDR779

Страница 1: ...acket 82 83 can also be repaired at component level with the help of COMPAIR release 1 6 and higher With this tool the diagnosing of the set can be done in an interactive way In the tool also the adjustment procedure has been implemented This is absolutely necessary in case the CDR mainboard and or CDR loader CDM is disconnected from the matched production combination Only designated workshops can...

Страница 2: ...eighted 99dB typical 100dB S N ratio unweightes 97dB typical 98dB Dynamic range 94dB at 1kHz typical 95dB THD N 89dB from 20Hz until 20kHz typical 90dB 1 3 2 Cinch analog input output monitor path CDR Measued with Audio precision system one Input voltage is 2Vrms input voltage 2Vrms 2dB 0dB digital Frequency range F R 20Hz F R 20kHz Amplitude linearity 0 2dB typical 0 1dB Channel unbalance 0 2dB a...

Страница 3: ...60dB between 20Hz until 20kHz 1 4 Laser device Material GaAlAs Wave length between 780 and 800nm at 25 C Laser output 1mW max during reading 20mW max during writing Class 3B 1 5 Dimensions and weight Number and height of feet 4x11mm foiled Apparatus tray closed WxDxH 435x305x75mm without feet Weight without packaging 3 2kg Weight with packaging 4 2kg ...

Страница 4: ... 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 osservazione ...

Страница 5: ...Warnings and Servicing Hints GB 5 CDR779 2 SERVICING HINTS In the set chip components have been applied For disassembly and assembly check the figure below CL 96532086_022 eps 080999 ...

Страница 6: ...Warnings and Servicing Hints GB 6 CDR779 2 CL 96532086_023 eps 080999 ...

Страница 7: ...order is in Standby mode any key press will activate the CD recorder 2 Standby indicator 3 Disc tray 4 OPEN CLOSE opens closes disc tray 5 PLAY PAUSE 2 starts play interrupts play or recording 6 STOP 9 stops clears a program 7 REC ord TYPE selects recording modes 8 RECORD starts recording finalizing erasing 9 FINALIZE selects finalize mode 0 ERASE selects erasing mode disc or track EXT SOURCE sele...

Страница 8: ...lay for your guidance General READING reading disc information OPEN during tray opening CLOSE during tray closing NO DISC no disc inserted disc unreadable or disc inserted upside down PROG FULL program full INSERT DISC insert disc or insert disc in correct way WRONG DISC inserted disc is not an audio CD USE AUDIO CD UNFINALIZED unfinalized CDR W disc MEMORY XXù indicates the amount of text memory ...

Страница 9: ... 12 This connection must be made for playback on the CD recorder deck as well as the CD player deck cable 2 Cable 1 is only required if you want to make recordings from an external analog source Use the audio cables supplied Connect the red plugs to the R sockets and the white plugs to the L sockets 1 For recording connect cable 1 between the ANALOG IN sockets on the CD recorder and the CDR LINE o...

Страница 10: ...or recording it is important that the blank disc is completely free from dust particles or scratches see maintenance REM TRACK REC TIME DIGITAL OPTICAL ANALOG PROG SHUFFLE REPEAT SCAN I I CD RW CHANGER SYNC MANUAL RECORD REM TOTAL ALL TRACK TIME STEP TRACK CD RW 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 REM TRACK REC TIME DIGITAL OPTICAL ANALOG PROG SHUFFLE REPEAT SCAN I I CD RW CHANGER SYNC MANUAL RECO...

Страница 11: ... a CDRW disc for your first try We will describe Recording from internal CD player deck high speed or listen mode Recording from an external CD player deck syncronized start with CD player or manual start analog or digital If the disc is a CDRW and is already finalized you must unfinalize it first The recording procedure is the same for CDRs and CDRWs If the disc already contains recordings the CD...

Страница 12: ...P REC TYPE OPEN CLOSE PLAY PAUSE STOP EXT SOURCE ERASE FINALIZE CDR RECORD AUDIO CD PLAYBACK EASY JOG STORE MENU CANCEL DELETE CD AUDIO CD PLAYBACK ENTER PHONES AUDIO CD PLAYBACK DISPLAY SCROLL DJ MODE REPEAT SHUFFLE PROG CDR 779 AUDIO CD RECORDER ANALOG RW Manual recording from external CD player RECORDING English 18 During Listen mode recording you listen to the recording while you are making it...

Страница 13: ...d manually In analog source material a silence of 2 7 seconds or more is automatically detected as a track increment Preparing for autostart recording 1 Make sure the disc is absolutely free of scratches and dust particles 2 Press EXT ernal SOURCE repeatedly until depending on the digital connection used DIGITAL I OPTICAL I or ANALOG lights up and DIGITAL 1 OPTICAL or ANALOG appears on the display...

Страница 14: ...al playing time appear on the display If you want to see this information about the other deck press CDR or CD 1 In stop mode press SCAN on the remote control 2 The first 10 seconds of each track on the CD or program if set are played 3 Press SCAN again to return to normal CD play mode Intro Scan Playing CDs on Deck 1 and or Deck 2 DJ mode Play a 2 disc changer Changer mode PLAYING English 22 For ...

Страница 15: ...al keys on the remote control For 2 digit track numbers press the keys in rapid succession For tracks on the other disc first press CD or CDR as applicable Play skips to the beginning of the selected track or Press or on the remote control one or more times Play skips to the beginning of the present previous or subsequent tracks including tracks on the disc in the other deck Changer mode only Sele...

Страница 16: ...PROG SHUFFLE REPEAT SCAN I I CD RW CHANGER SYNC MANUAL RECORD REM TOTAL ALL TRACK TIME STEP TRACK CD RW 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 REM TRACK REC TIME DIGITAL OPTICAL ANALOG PROG SHUFFLE REPEAT SCAN I I CD RW CHANGER SYNC MANUAL RECORD REM TOTAL ALL TRACK TIME STEP TRACK CD RW 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 You can program up to 99 tracks to play in any desired sequence Tr...

Страница 17: ...s STORE MENU TEXT EDIT appears on the display 2 Press EASY JOG ENTER to confirm ALBUM ARTIST appears on the display 3 Rotate EASY JOG ENTER to select the required option in the submenu ALBUM ARTIST ALBUM TITLE ARTIST TR 1 TITLE TR 1 etc 4 Press EASY JOG ENTER to confirm The first character space appears on the display 5 Select the characters by rotating the EASY JOG ENTER key or by pressing the co...

Страница 18: ...acks see programming Recording is distorted make sure the recording level is correct 20 second pause between recordings see Autostart recording from external CD player CD SYNC Player does not react switch the ON OFF button on the front of the player off and back on DISC RECOVER on display a power failure has occurred during recording the CD recorder is attempting to repair the disc if DISC ERROR t...

Страница 19: ...loader assy Cable Connected to loader assy Flex Delivered with loader assy Cable Connected to loader assy 8007 3104 157 1132 8005 3104 157 1123 8008 3104 157 11281 8008 1 5V 2 IR_IN 3 GROUND CWAS 03EH 03EH 240 24S 8009 1 LED_ON 2 GROUND CWAS 02PH 02PH 120 26S Flex Delivered with loader assy 8001 3104 157 1168 8010 1 GROUND 2 OPT_IN 3 DIG_OUT 4 GROUND 5 DIG_IN_2 6 DIG_IN_1 7 GROUND 8 NC 9 KILL_MAIN...

Страница 20: ...o CD out board CONNECTOR 1006 1 HALL 2 W 3 W 4 V 5 HALL 6 U 7 V 8 U 9 UCOIL 10 VCOIL 11 WCOIL CONNECTOR 1002 1 HOMESW 2 SGND 3 TRAY 4 TRAY CONNECTOR 1001 1 HOMESW 2 SGND 3 SL 4 SL CONNECTOR 1000 1 VSUB 2 HFGND 3 VDD 4 RF 5 LDON 6 R2 7 R1 8 D4 D3 9 D2 10 D1 11 FTC 12 RW 13 FOC 14 FOC 15 RAD 16 RAD CONNECTOR 1209 1 AUDIO R RIGHT_CD 2 GND 3 AUDIO L LEFT_CD 4 GND 5 DOBM5_CD DOBM_CD 6 GND 7 KILL CONNEC...

Страница 21: ...4 Exploded view CDR779 MAIN BOARD CDR LOADER ASSY CDR LOADER ASSY CD MAIN BOARD CD I O BOARD POWER SUPPLY UNIT CD OUT BOARD DISPLAY ASSY ON OFF STBY LED HEADPHONE BOARD IR BOARD DISPLAY BOARD EXPLODED VIEW CDR779 CL 06532151_015 eps 241100 ...

Страница 22: ...Y SUSPENSION RACK SPRING RACK RUBBER SWITCH RUBBER PLUG TRAY GEARWHEEL PLUG TULE RACK GEARWHEEL BELT PULLEY WHEEL TRAY HORIZONTAL CDM VAM1250 MOTORSPRING SUSPENSION SUB CHASSIS RUBBER SUSPENSION SUSPENSION RUBBER CHASSIS ASSY VAL1250 TRAY MOTOR ASSY MOTORSPRING SCREW SCREW CL 96532086_004 eps 080999 ...

Страница 23: ...s to stay with CDR player in case of I O board exchange Remove 2 screws 31 32 ground wires frame 181 Display board 1002 Remove easy jog knob 51 pulling it forward Remove 11 screws 19 29 display board front assy 1 Undo the 3 wire connections on display board Release 2 snaps 1 on left and 1 on right side Remove display board Headphone board 1002 Pull board out of front assy 1 Slide board out of midd...

Страница 24: ...2 WIRES FLASH ROM 7703 DRAM 7702 DSA CDR DATA BUS ADDRESS BUS SUBCODE BUS I2S BUS 1 DOBM CDR 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 30P SLAVE DISPLAY CONTROLLER TMP87CH74F KEYS RC5 EASY JOG DISPLAY ASSY I O BOARD EXTERNAL DIGITAL IN2 EXTERNAL OPTICAL IN DIGITAL OUT CDR CD ANALOG OUT...

Страница 25: ...122 H9 F112 D6 F F114 D3 F115 D4 F116 D4 F117 D4 F118 D4 1131 B B10 F120 D5 2101 F2 2102 G5 2104 G10 2106 G10 H 3100 B9 CD CD C 1125 C10 1126 D11 1127 D12 1128 D12 1130 A D11 I 0100 G10 1050 H7 1101 B9 1102 C12 CANC 1104 C12 1105 B10 1106 B11 1107 B12 REPEAT 3122 B1 3124 C1 3125 C8 5100 D7 6100 B8 REC 7104 D3 8 9 OPEN 4 5 6 7 8 12 10 11 12 13 1 11 F 1117 C9 1130 B C11 1131 A C10 7 A B C D E G G H ...

Страница 26: ...GB 26 CDR779 5 Block diagrams Circuit diagrams and PWB s Display 779 DISPLAY BOARD BOTTOM VIEW DISPLAY BOARD TOP VIEW CL 06532151_003 eps 241100 ...

Страница 27: ...CIRCUIT DIAGRAM C A B C 1300 A3 1301 C3 1302 B1 6300 A1 F300 A2 F301 A2 F302 B2 F303 B2 1 2 3 1 2 3 A B 3 6 F302 F303 1 2 1301 SPPH23 2 5 1 4 F301 EH B 1302 6300 LTL 1CHPE F300 PH B 1300 1 2 PB DISPLAY 4230 3104 123 4230 ON OFF STBY LED BOARD CDR779 CIRCUIT DIAGRAM TO DISPLAY BOARD IR BOARD FRONT VIEW IR BOARD BACK VIEW ON OFF STBY LED BOARD FRONT VIEW ON OFF STBY LED BOARD BACK VIEW TO DISPLAY BO...

Страница 28: ...GNDD 3502 2K2 3501 180R 180R 3503 2K2 3504 F502 GNDD 68R 3500 GNDD 220p 2503 CD OUT BOARD CIRCUIT DIAGRAM HEADPHONE BOARD TOP VIEW HEADPHONE BOARD BOTTOM VIEW CD OUT BOARD TOP VIEW CD OUT BOARD BOTTOM VIEW TO CD MAIN BOARD 2104 C6 2105 D6 3100 B4 3101 C4 3102 C6 3103 C6 3104 D6 3105 E6 NC NC NC 1 2 3 4 F100 B4 F101 B5 F102 B6 F103 B7 F104 B4 F105 C5 F106 C4 F107 C5 4 5 6 7 8 9 A B F108 D6 F109 D8 ...

Страница 29: ...4 I135 9Va I100 3135 10K I138 47R 3111 I122 3126 7101 C 74HC4053D E 6 S 9 Vdd 16 Vee 7 Vss 8 Y0 5 Y1 3 Z 4 4K7 3103 47R 3141 2K4 I116 47u 2104 5Va 10K 3149 470p 2126 6 E_ 8 GND 11 S0 10 S1 9 S2 16 VCC 7 VEE 13 Y0 14 Y1 15 Y2 12 Y3 1 Y4 5 Y5 2 Y6 4 Y7 3 Z 22n 74HCT4051D 7107 22n 5Va 2122 2103 5Vd 22n 2149 470R 3154 3153 51K I109 I101 7105 B 5 6 7 8 4 22n 2106 3106 4K7 OP275GS Vss 2 Y0 1 Y1 15 Z 5Va...

Страница 30: ...D 2 3 4 5 6 7 11 10 9 14 2206 10u 1 2 3 3237 1208 3 2 1 5Vd 1205 A YKC21 3342 I217 YKC21 3394 I234 2209 22n 5202 BLM21 I238 3219 I226 2226 33n 3222 I233 2217 33p 3 BC847B 7204 3213 3K3 1200 B YKC21 3271 5 4 I209 4 5 6 I216 2 1 3 1205 B YKC21 3342 1K2 3232 1207 YKC21 3071 2221 22n 22n 2213 I224 2203 22n 33p 2200 I221 3K3 3210 I201 5203 BLM21 150p 2212 I215 I223 I203 2207 22n 3233 3K3 5Vd 22n 2211 G...

Страница 31: ... I300 6300 UDZ 3 3B 82R 3302 I316 I323 22n 2316 3V3d I302 1n 2322 I312 47u 2304 2320 47u 9Va I320 1n I315 2321 2325 1n 3321 5Vai 2319 22n I324 BCK 13 DATAO 14 FSEL 7 PWON 6 SFOR 8 SYSCLK 16 VDDA 9 VDDD 1 VINL 3 VINR 2 VREF 4 VREFN 5 VREFP 15 VSSA 10 VSSD 12 WS I317 UDA1360TS 7300 11 I328 100n 2312 2317 5Va I308 22n 3301 47K 100R 3314 100p 2300 Vee 7 Vss 8 Y0 12 Y1 13 Z 14 74HC4053D 7301 A E 6 S 11...

Страница 32: ...0K 3403 I409 100p 2417 3407 10K 0R0 3401 74HC244D 7403 A 2 4 6 8 10 GND 1 20 Vcc 18 16 14 12 2413 100p 27 28 29 3 30 4 5 6 7 8 9 12 13 14 15 16 17 18 19 2 20 21 22 23 24 25 26 1401 1 10 11 3404 10K 100n 2408 100p 2414 100p 2425 4u7 2407 2416 100p 2420 100p 100n 2410 2411 47u 2405 100u I413 10K 3406 2402 100n 3414 47R 2403 47u 100n 2400 100p 2424 2401 4u7 3405 10K I401 I400 100n 2412 I407 3400 0R0 ...

Страница 33: ...9 E8 3520 E11 3521 E7 3522 E11 3523 E5 7519 BC848B I565 7500 BC858B 6502 BAS216 BC858B 7510 I538 3538 330R I516 BC848B 7509 BAS216 6516 2500 22n 2536 100n 6517 BAS216 68R 3535 I532 1K 3547 100u 2517 2K 3530 2519 22n BAS216 6501 I550 3539 2K2 1K 3546 2506 270p 270p 2503 7522 BC858B BAS216 6518 22n 2518 2511 100u 6503 BAS216 BAS216 6504 3540 1K2 I523 I566 I537 I509 I547 2525 390p 390p 2524 3520 2R2 ...

Страница 34: ...K8 2625 220p 2R2 3620 3606 2618 10n I609 2 1 8 4 2601 100n OP275GS 7601 A 3 2621 330p I612 3608 I610 3626 I614 330p 2606 5Vd 47u 2620 1K8 3605 2R2 3607 3625 I606 47u 3602 1K 2615 2622 220p 3603 10K Vaf 100n 2609 12 OUTR 13 OUTR 24 PD RST_ 27 SDATA 7 X2MCLK 22 ZEROL 8 ZEROR I613 BCLK 4 CCLK 5 CDATA 3 CLATCH 9 DEEMP 1 DGND 28 DVDD 19 FILTB 14 FILTR 21 IDPM0 20 IDPM1 25 L RCLK_ 2 MCLK 23 MUTE 17 OUTL...

Страница 35: ...Circuit diagrams and PWB s GB 35 CDR779 5 Layout I O board 4 6 5 7 10 11 12 CL 06532151_012 eps 241100 3 2 1 8 9 13 14 15 16 17 18 21 20 19 22 23 24 27 25 26 I O BOARD LAYOUT 3 TOP VIEW I O BOARD LAYOUT 3 BOTTOM VIEW ...

Страница 36: ... Item Number should 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...

Страница 37: ...Block diagrams Circuit diagrams and PWB s GB 37 CDR779 5 Layout PSU CDR3 ECO POWER SUPPLY UNIT CDR3 ECO TOP VIEW POWER SUPPLY UNIT CDR3 ECO BOTTOM VIEW CL 06532151_014 eps 241100 ...

Страница 38: ...3 1028 1 3282 10K 10K 5VHF 3270 10K 3269 5VHF 1n5 2233 100R 3275 100R 390p 3273 100R 5VHF 5VHF HFGND 47K 4K7 3285 3286 150K 3287 BC848B 7132 BC848B 7131 BC858B 7130 F166 1029 1 F174 F175 F159 F191 3219 C 47R F177 3219 B 47R 5VHF 3168 100R 3213 2183 100n 2182 10u 100R BAS216 6003 1050 2 2 3266 1K 3220 10K HFGND HFGND 1023 1 1022 1 1021 1 1020 1 VPROC 10K 3280 1004 100n 2280 3276 100R CX 5F 8M4672 F...

Страница 39: ...0 5VX 5V 3129 10K 5V 5VX 5VX 100n 2104 2105 47u 3134 1R 6002 BYG50D 1R 3135 BYG50D 6001 PGND 7110 A 74HCT00D 1 2 7 14 3 PH B 1321 1 2 3 4 F124 0R 3140 1K F123 5V 3113 47K 3144 PGND 1 1006 5 5 CDR99 PB CD MAIN 4236 3104 123 4236 1006 11 11 1006 1 F126 1006 10 10 F121 F119 F122 F110 F108 PGND 7005 D 74HCT08D 12 13 11 14 7 1005 PH B 1 2 3 4 5V 22K 3101 3100 22K 180R 3106 2281 10n BC847B 7031 3105 560...

Страница 40: ...0R 3153 3V3 AGND 47p 2158 2211 47p AGND 2153 47p F198 100n 2216 F323 2217 47p F320 AGND 10 1208 9 9 1208 2 2 1208 10 2181 22u 3216 4R7 2188 100n F353 F317 22K 3258 22K 3254 1208 8 8 F307 1208 14 14 2252 1n AGND AGND AGND AGND AGND AGND 47p 2218 7120 A 3 2 1 8 4 A3V3 TDA1308T 2202 100p 47K 3245 AGND CDR99 PB CD MAIN 4236 3104 123 4236 3 F199 1210 15 15 1210 16 16 1208 3 1210 14 14 1210 13 13 7120 B...

Страница 41: ... 8 P3 2 INT0n 9 P3 3 INT1n P3 4 T0 10 11 P3 5 T1 12 P3 6 WRn 13 P3 7 RDn 26 PSENn 36 P0 1 AD1 35 P0 2 AD2 34 P0 3 AD3 33 P0 4 AD4 32 P0 5 AD5 31 P0 6 AD6 30 P0 7 AD7 40 P1 0 41 P1 1 42 P1 2 43 P1 3 44 P1 4 1 P1 5 P1 6 SCL 2 3 P1 7 SDA 18 P2 0 S87C654 7202 27 ALE PROGn 29 EAn VPP 28 NC1 6 NC2 NC3 39 17 NC4 37 P0 0 AD0 3359 0R 1K 3312 1210 2 2 100R 3354 6201 BAS216 F202 100R 3331 F200 3999 1K 220u 2...

Страница 42: ...GB 42 CDR779 5 Block diagrams Circuit diagrams and PWB s Layout CD Main board top view CD MAIN BOARD TOP VIEW CL 96532086_019 eps 080999 ...

Страница 43: ...ams Circuit diagrams and PWB s GB 43 CDR779 5 Layout CD Main board bottom view CD MAIN BOARD BOTTOM VIEW 2 3 11 4 5 6 7 8 9 10 1 12 13 14 15 16 17 18 19 21 20 22 23 24 27 28 26 25 30 29 CL 96532086_020 eps 080999 ...

Страница 44: ...GB 44 CDR779 5 Block diagrams Circuit diagrams and PWB s Personal notes Personal notes ...

Страница 45: ...rienced 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 uni...

Страница 46: ...ICATION 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...

Страница 47: ...DR779 work correctly A CD DA disc with a minimum of 3 tracks needs to be inserted in both loaders A disc test is executed to check focus control disc motor control radial control and jump 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 messag...

Страница 48: ...Finalising at double speed The Burn In mode is used to test intermittent faults of the loader 6 6 2 Requirements to perform the test Working Local Keyboard needed to start up the test Working Local Display all output messages must be displayed on the local display Analog source connected to the CDR99 player CDRW disc in tray Burn in sequence Initialisation The Burn In mode is initiated by pressing...

Страница 49: ...IGNALS CLOCK 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 ...

Страница 50: ...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 51: ...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 52: ...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 53: ...ICAL SERVICE DIAGNOSTICS CD LOADER TRAY TEST CHECK TRAY MOTOR VOLTAGES TRAY TRAY MICROPROCESSOR 7202 CHECK TRAY MOTOR DRIVER IC7021 REPLACE OR REPAIR CD LOADER ASSY TRAY MOTOR ASSY 02 BELT 11 TRAY NO NO NO YES YES YES TOC YES NO DIAGNOSTIC SOFTWARE MECHANICAL SERVICE DIAGNOSTICS CD LOADER FOCUS TEST SLEDGE TEST CHECK WIRING TO CDM CHECK POWER DRIVERS 7021 7022 7020 CHECK VOLTAGES ON POWER DRIVERS ...

Страница 54: ...ECK CLK11 AT PIN 6 11 2896MHz PIN 11 MUTE HIGH TESTPOINTS 23 24 ANALOG OUTPUT REPLACE DAC 7309 OPAMP 7120 TESTPOINTS 23 24 ANALOG OUTPUT POWER SUPPLY PIN 8 12V REPLACE OPAMP 7120 NO YES PLAYBACK CD MODULE OK DISTORTION NO YES NO DAC 7309 OPAMP 7120 AUDIO CD OUT PCB YES FLEX TO CDR MAINBOARD FLEX TO CD OUT BOARD CHECK I O BOARD CD OUT BOARD CL 96532086_031 eps 080999 ...

Страница 55: ...nerates 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 Figure 8 1 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...

Страница 56: ...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 CDR770 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 extra current amplifier in line T7203 for G13 T7204 for G14 a...

Страница 57: ...ng 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 mounted on a small board together with the headphone socke...

Страница 58: ...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 59: ...output voltage of the power supply with an internal 2 5V reference The current sense comparator compares the output of the error amplifier with the switch current Isense pin 3 of the power supply The output of the current sense comparator resets a latch which is set every cycle by the oscillator The output stage is a totem pole capable of driving a MOSFET directly Figure 8 11 8 2 4 Start up sequen...

Страница 60: ...tance of the primary winding A certain amount of energy is stored in the transformer in the form of a magnetic field The polarity of the voltages at the secundary windings is such that the diodes are non conducting TimeDIODE phase When the MOSFET is switched off energy is no longer supplied to the tranformer The inductance of the tranformer now tries to maintain the current which has been flowing ...

Страница 61: ...lator Power switch circuit This circuit comprises MOSFET 7125 Rsense 3126 3127 and 3128 R3125 C2127 L5125 R3112 and R3113 R3125 is a pull down resistor to remove static charges from the gate of the 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 ...

Страница 62: ... Disconnect the power supply from the MAIN Board Connect a dummy load resistor 6 8 ohm 10W min 5W on the 5V and power supply OK check main board front board modem board OK NO NO Vsource 0 8V OK OK OK OK Check the 5V check 6210 2210 2253 5210 check the fault voltage path connect the mains inlet to a mains isolated variac turn input voltage up and check across C2121 the voltage this voltage should b...

Страница 63: ... the disc speed To avoid locking problems between the two drives in the CDR779 both drives run on the same clock Therefore the CD main board gets the clock for the decoder from the CDR main board via pin 2 of connector 1208 The DAC needs a system clock to drive its internal digital filters and to clock the I2S signals from the decoder In our case this is 11 2896MHz CL11 generated by the CD10 Measu...

Страница 64: ...ROL PART Vref GENERATOR VRIN ADC PRE PROCESSING CONTROL FUNCTION OUTPUT STAGES R1 R2 12 D1 D2 D3 D4 SCL SDA FRONT END HFIN HFREF ISLICE Iref 13 7 40 39 2 1 3 6 TEST TEST1 25 TEST2 31 TEST3 44 TIMING SELPLL 24 CRIN 16 CROUT 15 CL16 26 CL11 4 49 8 9 10 VSSA1 VSSA2 VDDA1 VDDA2 VSSD1 VSSD3 VSSD2 VDDD1 P VDDD2 C 4 14 5 17 33 50 58 52 57 RA FO SL 54 55 56 LDON 64 DIGITAL PLL SRAM RAM ADDRESSER SUBCODE P...

Страница 65: ...nector 1208 to 5V Connect a load of 15Ω 7W between pin 3 and 4 of connector 1002 Check the voltage over the load with TRAY pin 3 as positive reference Check also the levels of pins 19 and 20 of the processor U TRAY TRAY 100mV Pin 20 5V Pin 19 5V Force pin 20 of the processor to ground and check the voltages U TRAY TRAY 6 5V 10 Pin 20 0V Pin 19 5V Force pin 19 of the processor to ground as well and...

Страница 66: ... 390p F159 HFGND 2141 2n2 5VHF 5VHF 5VHF 5VHF HFGND 2130 100n HFGND HFGND 680p 2149 22n 2138 2137 HFGND 22n 3173 430R HFGND 47u 2161 HFGND 22n 2160 330p 2143 HFGND 22K 3181 HFGND 47n 2150 HFGND 2142 22n 2146 14 15 11 13 1 5 2 4 3 6 8 GND 10 9 VCC 16 VEE 7 1n5 74HCT4052D 7025 12 100p 2162 7009 BFS20 3192 430R 7010 HFGND HFGND BC848B 3205 7007 BC858B 2K7 3169 10K HFGND 2K7 3180 7023 BFS20 1K 3178 31...

Страница 67: ...cy as the sample rate of the digital audio signal This can be 32 44 1 or 48kHz Normal polarity is low for a left sample and high for a right sample So within the low state of the WS line the data bits for the left channel are transferred and within the high state the data bits of the right channel are transferred CLOCK The CLOCK signal CLK indicates when DataTips must be set and when DataTips must...

Страница 68: ...via an I2S generator I2S signals to the DAC Pin 1 at 7309 SLCK Pin 2 at 7309 WCLK Pin 3 at 7309 DATA Connect also the SYSCLK pin 6 at position 7309 to a clock signal of 11 2896 MHz 100ppm Generate an I2S signal equivalent with a sine wave of 1kHz at 0dB for both left and right channels Check if 0 8 VRMS at pins 14 and 16 at location 7209 with a DC of 1 65VDC Check if 1 7 VRMS 2 dB at connector pin...

Страница 69: ...c signal ATIPSYNC IC7300 IC7270 ATIP SYNC signal ATT IC7270 R3717 R3722IC7270 IC7701 ATTenuation request from MACE2 to audio DAC active low means that 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 B...

Страница 70: ... R3382D C2379 IC7701 Digital Output EBU output from CDR60 to DASP DRAM_RW IC7701 IC7702 Read Write strobe for DRAM DSA_ACK_CD IC7701 R3830 R3831 CONN1708IC7701 R3830 C2735 Data Strobe Acknowledge serial communication between DASP and CD player in CDR779 DSA_ACK_CD R IC7701 R3729 IC7270 CONN1830IC7701 R3729 R3769 Data Strobe Acknowledge serial communication between MACE2 and DASP for CDR acknowledg...

Страница 71: ...ed for display slave processor and digital potmeter I2CL R3248B IC7207 R3247C I2C CLock line I2CSCL IC7207 IC7008IC7207 IC7010IC7207 R3248B I2C Serial CLock line I2CSDA IC7207 IC7008IC7207 IC7010IC7207 R3248A I2C Serial DAta line I2DA R3248A IC7270 R3247D I2C DAta line I2S_BCLK_AI IC7701 R3814 IC7406 I2S4 Bit CLocK for CODEC ADC for CDR779 Analog Input record from analog source I2S_BCLK_AO IC7701 ...

Страница 72: ...inus decoder OPC PCS extra RAM MAD 0 7 IC7270 IC7209 IC7802 IC7208 IC7300 bi directional data bus address bus low byte MIRN IC7010 IC7270 MIRror Normalized disc reflection current output MOTO1 IC7300 IC7355A turn table MOTOr control output MRDN IC7270 R3276 R3242A IC7802 IC7300 Master ReaD read strobe for external peripherals active low MUTE IC7270 R3718 R3723IC7270 IC7701 MUTE control from MACE2 ...

Страница 73: ...IC7300 EIAJ subcode synchronisation from DASP to CDR60 CD text interface SIN CONN1220 IC7225A Hall feedback signal from sledge motor SIN CONN1220 IC7225A Hall feedback signal from sledge motor SL IC7240 R3265 CONN1220 SLedge motor drive signal negative connection SL IC7240 CONN1220 SLedge motor drive signal positive connection SRSTN IC7270 R3243B IC7300 Slave ReSeT out CDR60 reset active low STAND...

Страница 74: ...NNF934 supply voltage for display assy VFO IC7270 R3295 R3244 FOcus actuator drive output VFTD CONN1500 CONNF934 Voltage Fluorescent Tube Display display assy VRA IC7270 R3297 R3254 RAdial actuator drive output VSL IC7270 R3299 IC7240 SLedge actuator drive output WCLK IC7701 R3898B IC7300 I2S1 WordCLocK from DASP to CDR60 playback and record WOBBLE IC7050C IC7300 analog WOBBLE signal of pre groove...

Страница 75: ...63V 22nF PM10 R 2318 5322 124 11919 47µF 20 6 3V 2319 5322 122 32654 63V 22nF PM10 R 2320 5322 124 11919 47µF 20 6 3V 2321 5322 122 31647 1nF 10 63V 2322 5322 122 31647 1nF 10 63V 2326 4822 126 14585 100nF 10 50V 2327 4822 126 14585 100nF 10 50V 2400 4822 126 14585 100nF 10 50V 2401 3198 030 74780 EL SM 35V 4U7 PM20 COL R 2402 4822 126 14585 100nF 10 50V 2403 5322 124 11919 47µF 20 6 3V 2404 4822 ...

Страница 76: ...C SM OP275GS ANA0 R 7104 4822 209 90531 AD1877 7105 9322 067 00668 IC SM OP275GS ANA0 R 7107 9337 153 00118 IC SM 74HCT4051D PHSE R 7201 5322 209 11517 PC74HCU04T 7203 4822 130 42615 BC817 40 7204 4822 130 42615 BC817 40 7205 4822 130 42615 BC817 40 7206 4822 130 42615 BC817 40 7207 4822 130 42615 BC817 40 7208 4822 130 42615 BC817 40 7209 4822 130 42615 BC817 40 7210 4822 130 42615 BC817 40 7211 ...

Страница 77: ...X9 8MM LAL04T100K 5250 4822 157 51462 10µH 10 4X9 8MM LAL04T100K 5255 4822 157 51195 1 µH 20 4X9 8MM AXIAL d 6100 4822 130 34281 BZX79 B15 6101 4822 130 34281 BZX79 B15 6102 4822 130 83707 SINB80 6106 4822 130 31603 1N4006 6107 4822 130 31603 1N4006 6129 5322 130 80122 BZX84 C24 6130 4822 130 83649 1SS355 6132 4822 130 42488 BYD33D 6133 4822 130 83649 1SS355 6141 4822 130 10656 UDZ20B 6150 4822 13...

Страница 78: ...822 051 30181 180Ω 5 0 062W 3194 4822 051 20008 0Ω jumper 0805 3195 4822 051 20008 0Ω jumper 0805 3196 4822 051 30102 1k 5 0 062W 3197 4822 117 10833 10k 1 0 1W 3198 4822 051 30479 47Ω 5 0 062W 3199 4822 051 30152 1k5 5 0 062W 3200 4822 117 10833 10k 1 0 1W 3201 4822 117 11817 1k2 1 1 16W 3202 4822 051 30223 22k 5 0 062W 3203 4822 051 30272 2k7 5 0 062W 3204 4822 051 20008 0Ω jumper 0805 3205 4822...

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