Service Manual DR6050 /F1N, /K1G, /N1G /F1B, /K1B, /N1B, /U1B Compact Disc Recorder DR6050 www.electronicsrepair.net CD RECORDER DR6050 Recordable ReWritable STANDBY POWER STORE/MENU EASY JOG CANCEL/DELETE ON/OFF STOP REC OPEN/ CLOSE PLAY/PAUSE OPEN/ CLOSE CDR STOP CD REC TYPE SOURCE ERASE PLAY/PAUSE DJ MODE PHONES FINALIZE PUSH ENTER REMARK : This service manual explains them by extracting specifications designed for the model DR6050 only.
MARANTZ DESIGN AND SERVICE Using superior design and selected high grade components, MARANTZ company has created the ultimate in stereo sound. Only original MARANTZ parts can insure that your MARANTZ product will continue to perform to the specifications for which it is famous. Parts for your MARANTZ equipment are generally available to our National Marantz Subsidiary or Agent. ORDERING PARTS : Parts can be ordered either by mail or by Fax.. In both cases, the correct part number has to be specified.
1. Servicing the DR6050 1.1 INTRODUCTION: The DR6050 is the consumer version of a CD recorder, this means that the SCMS (Serial Copy Management System) is included. The DR6050 can only record on the Audio CDRs (Consumer Use). The DR6050 is suitable for recording and playback of CD-R W discs (CD-Re Writable disc).
1.2.1 CDR loader (CDR main module CDL4009 or MAR770): This complete CDR loader is considered as not repairable in the field. therefore this module will be repaired centrally. A module exchange procedure will be set up for this purpose. The module can be removed from the product by removing 4 screws and the transformer (see demounting the CDR module on page 1-7), and loosing the connectors. This module is the complete CD recorder, it contains the following parts: CD Mechanism (CDM4009').
2 TECHNICAL SPECIFICATIONS GENERAL System .................................................................................................... Compact disc digital audio Number of channels ................................................................................ 2 (stereo) Applicable discs ...................................................................................... CD, CD-R (digital audio), CD-RW (digital audio) Power Requirement F version ...................................................
3. WARNINGS ESD WARNING All ICs and many other semiconductors are susceptible to electrostatic discharges (ESD). Careless handling during repair can reduce life drastically. When repairing, make sure that you are connected with the same potential as the mass of the set via a wristband with resistance. Keep components and tools at this potential. WAARSCHUWING Alle IC´s en vele andere halfgeleiders zijn gevoelig voor electrostatische ontladingen (ESD).
4. SERVICE HINTS 5. SERVICE TOOLS Audio signals disc Disc without errors (SBC444)+ Disc with DO errors, black spots and fingerprints (SBC444A) Disc (65 min 1kHz) without no pause Max. diameter disc (58.0 mm) Torx screwdrivers Set (straight) Set (square) 13th order filter Hexagon socket screw button (No. 1.
6. Diangostic Software 6.1 Dealer mode 6.2.2 • • The purpose of the dealer mode is to prevent people taking out the CD inside the player at exhibitions, showrooms etc.. This mode disables the open/close function of the player. The dealer mode can be switched on and off pressing keys [OPEN/CLOSE] and [STOP] of the CDR player simultaneously while switching on the unit. The dealer mode is stored in the flash memory and can only be changed by executing the above actions. 6.
6.
6.3.1 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. 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.
6.4.2 Requirements to perform the test 6.5.1 Working keyboard to cycle through the tests and to start up the test. Working local display to check the output messages. 6.4.3 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 out area) at speed N=2. The display shows the countdown of the remaining time required for the operation to complete.
7. Faultfinding trees 7.
CD-DA DISC LOADED CHECK: DISC DETECTION & READING? NO WIRING POWER SUPPLY VOLTAGES ELECTRICAL SERVICE DIAGNOSTICS: REPLACE CDR MODULE IF "DERRn" OR "BERRn" ERROR OCCURS YES CHECK: DISC: DIRT, SCRATCHES, DAMAGED... DISPLAY: “CD” & T.O.C. INFO? NO ELECTRICAL SERVICE DIAGNOSTICS: REPLACE CDR MODULE IF "DERRn" OR "BERRn" ERROR OCCURS YES CHECK: AUDIO CONNECTIONS & CABLES I/O BOARD PRESS ANALOG AUDIO OUT? W651 CONNECTION FLEX CONNECTION +5V (pin 8 conn. JJ01) KILL VOLTAGE (pin 7 conn.
CD-R DISC LOADED CHECK: NO DISC DETECTION & READING? YES WIRING POWER SUPPLY VOLTAGES ELECTRICAL SERVICE DIAGNOSTICS: REPLACE CDR MODULE IF "DERRn" OR "BERRn" ERROR OCCURS CHECK: NO DISPLAY: “CD R” & OPC INFO? DISPLAY: “CD” & T.O.C. INFO? NO DISC: DIRT, SCRATCHES, DAMAGED...
CD-RW DISC LOADED CHECK: DISC DETECTION & READING? NO WIRING POWER SUPPLY VOLTAGES ELECTRICAL SERVICE DIAGNOSTICS: REPLACE CDR MODULE IF "DERRn" OR "BERRn" ERROR OCCURS YES CHECK: DISPLAY: “CD RW” & OPC INFO? NO DISPLAY: “CD” & T.O.C. INFO? NO DISC: DIRT, SCRATCHES, DAMAGED...
7.2 CD Module CD MODULE NO DISC POWER ON DISC DETECTION STARTS? CHECK FLEX CONNECTION FROM CDR MAIN BOARD NO YES NO DISPLAY? POWER SUPPLY +5V, +12V AT TESTPOINTS 28 AND 27 +5V AT CONN.
CD MODULE PLAYBACK PRESS DAC 7309 AUDIO? NO YES TESTPOINTS 20, 21, 22 : I2S AT INPUT OF DAC 7309 CHECK POWER SUPPLY PINS 4, 13 CHECK CLK11 AT PIN 6 : 11.
8. Faultfinding Guide 8.1 Display Board 8.1.1 Description of display board Display controller TMP87C874F TMP87CH74F ( QY01) is a high speed and high performance 8-bit single chip microprocessor, containing 8-bit A/D conversion inputs and a VFT (Vacuum Fluorescent Tube) driver. In this application, its functions are : slave microprocessor. FTD driver. generates the square wave for the filament voltage required for an AC FTD. generates the grid and segment scanning for the FTD.
8.1.2 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 : QY02 for G13, QY03 for G14 and QY04 for G15. A typical grid line signal shows in the oscillogram below. Test instructions Supply voltages The display board receives several voltages via connector JY01. • VFTD : -35V ±5% measured at pin 2 of conn. JY01.
The pulses created this way arrive at pin 16 and 17 of the display controller. The first pulse to arrive tells the controller the direction of the rotation. Counting the pulses reveals the amount of rotation. Combining and decoding this information, the display controller will execute the appropriate task. PM3392A +5V Push button operation This button connects to the key matrix lines and thus the operation is identical to the ordinary keys.
8.1.3 Display board troubleshooting guide SWITCH POWER ON, EXIT STAND BY MODE CHECK : NO DISPLAY? SUPPLY VOLTAGES -35V± 5% at conn. JY01-2 3V8 ± 10% bet ween conn. JY01-1 and JY01-3 +5V ± 5 % at conn. JY01-10 CLOCK SIGNAL 8Mhz at pins 8, 9 of QY01 CONTROL SIGNALS RESETN 3V3 (high) at conn. JY01-4 after start up I2C DATA at conn. JY01-5 I2C CLK at conn.
Power Supply Unit P816 8.2.1 Description of P816 cycle is regulated so that the output voltages are independent of load or input voltage variations. The controlling device MC44603 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.
Pin function description Name Description 1 VCC This pin is the positive supply of the IC. The operating voltage range after start-up is 9.0 to 14.5 V. 2 VC The output high state (VOH) is set by the voltage applied to this pin. 3 Output Peak currents up to 750 mA can be sourced or sunk, suitable for driving either MOSFET or bipolar transistors. 4 Gnd The groundpin is a single return, typically connected back to the power source.
Block diagram of MC44603 1 16 Vref 8 DEMAGNETISATION DETECT DEMAGNETISATION MANAGEMENT Iref REFERENCE BLOCK Vref enable SUPPLY INITIALISATION BLOCK UVL01 Iref VOSC PROT 9 10 SYNC INPUT VOSC OSCILLATOR VC 2 OUT 3 GND 4 CT 1Set 15 RF STANDBY 12 RP STANDBY LATCH Vstby =1 BUFFER C 1Reset STANDBY (REDUCED FREQUENCY) 2.
is switched off when the current sense level exceeds the level at the output of the error amplifier. TimeON phase : A drain current will flow from the positive supply at pin 2 of the transformer through the transformer's primary winding, the MOSFET and Rsense to ground. As the positive voltage at pin 2 of the transformer is constant, the current will increase linearly and create a ramp dependent on the mains voltage and the inductance of the primary winding.
Circuit description of P816 Demagnetisation The auxiliary winding (7-9) voltage is used to detect magnetic saturation of the transformer core and connected via R801 to pin 8 of Q810. During the demagnetisation phase, the output will be disabled. Input circuit The input circuit consists of a lightning protection circuit and an EMI filter. The lightning protection comprises R819. The EMI filter is formed by C820, L820, C825 and C826. It prevents inflow of noise into the mains.
8.2.
Connect on pin 2 of position 1208 a clock signal of 8.4672 MHz ( 100ppm minimum rise time of 50ns and at TTL level (0V and +5V). Keep microprocessor 7202 in reset by forcing pin 7 at position 1208 to +5V. Release the reset. Now, the processor will reset the CD10 for at least 75 µs. The output clock CL11 should be available now at pin 42 of the CD10. CDM V AM1250 Loader assy HF amp.
DOBM CL11/4 49 FO 55 VSSD2 SL 56 50 VDDD2(C) 57 VDDD1(P) VSSD3 58 51 MOTO1 59 52 MOTO2 60 RA V4 61 CFLG V5 62 53 V1 63 54 LDON 64 Pin Configuration HFREF 1 48 SBSY HFIN 2 47 SFSY ISLICE 3 46 SUB VSSA1 4 45 RCK VDDA1 5 44 TEST3 Iref 6 43 STATUS VRIN 7 42 SILD 8 41 RAB D1 SAA7324 D2 9 40 SCL D3 10 39 SDA D4 11 38 RESET R1 12 37 SCLI SDI 8.3.
Motor controller truth table 6 U+ L H M M H L Input conditions conn 1006 pin 8 4 7 3 UV+ VW+ M H M M M L M M M L M H M H M L M M M L M M M H 2 WM M M M M M 9 UCOIL 6V 0V 0V 6V 0V 6V Outputs conn 1006 10 11 VCOIL WCOIL 0V 0V 6V 6V 6V 0V 0V 6V 0V 6V 6V 0V Test points on driver 17 16 HALL_V HALL_W 5V 0V 0V 5V 5V 0V 5V 0V 0V 5V 18 HALL_U 0V 5V CL96532086_055.eps 080999 Figure 8-26 Hall-elements input signal voltage levels Input voltage H M L Level 2.8 2.5 2.2 Tolerance 0.1 0.1 0.
another amplification and filtering circuit. The filtering again is controlled by the S1 and S2 lines, dependant on whether the disc starts up (speed n=1, S1 and S2 Low), disc plays at speed n=1 (S1 Low, S2 High) or disc plays at speed n=2 (S1 and S2 High). HF Path Description The pre-amplified HF-signal is presented to both n=1 and n=2 amplifier circuits. The mux/demux switches via software and micro processor controlled S1 and S2 lines between either one of the amplified n=1 or n=2 signals.
Transfer Characteristics Set the power and reset connections as described above in "1.1.1. Supply Voltages". Connect a function generator via a serial resistor of 1k5 to pin 4 of connector 1000. Use the Frequencies 300 Hz 10 kHz 100 kHz 300 kHz 800 kHz 1.5 MHz 3MHz function generator as a sine wave generator with output level of 1Vtt.
Measurements 22 IIS CLK11 1200 -17 DAC AMPLIFIER 25 1200 -19 NMUTE CL96532086_062.eps 080999 Figure 8-33 Keep processor 7202 in reset by forcing pin 7 of connector 1208 to +5V. This puts the processor outputs in tristate. Check the reset at pin 4 of processor 7202 to make sure that the processor is in reset. Now, force port 0-4 pin 33 at 7202 to 0V to set the decoder outputs (SCLK, WCLK, DATA, and CL11). Check the MUTE pin 11 at 7309 : this pin should be low.
9. WIRING DIAGRAM DISMOUNTING ADDITIONAL CABLES De-soldering and remove cables W651 from the loader PCB. W651 + side 2430 REMARK When replace the CDR module MAR775 to the new one. It is necessary to add removed cables at + side 2424 same positions as follows; .... + side lead of capacitor 2424 PINK .....
W801 WY01(at conn.F934of POWER SUPPLY PCB TERMINAL PCB P816 J851 JJ01 JF52 J682 J652 WC01 WC02 WC03 1 1410 1 14 1400 1 10 1 2 3 4 5 6 7 WC01(at conn.1209 of CDR main board) RIGHT CD GND LEFT CD GND DOBM CD GND KILL 1 2 3 4 5 6 7 8 9 10 11 W801(at conn.
10.
11. SCHEMATIC DIAGRAM AND PARTS LOCATION PY16 DISPLAY C701 J701 L701 100p CH PP16 53 52 48 49 47 46 45 44 43 42 41 40 38 39 36 37 35 26 25 24 22 23 21 20 19 18 17 16 15 14 13 12 11 10 9 8 7 6 2 5 GND DOBM OUT GND COAX IN OPT IN GND 5V MUTE RECIN LCH GND RECIN RCH OUTPUT RCH GND 1 CY11 47000P RY03 47K P1 P2 P3 P4 RY21 4.
Q851 LM317 L831 L831 1 D802 S1WB R819 C820 330k 0.22 250V (UL/CSA,MITI) 1M(CB) F820 L820 J821 2A_125V(F&U) R852 220 C851 0.1 R825 1k C852 330 /16V R851 560 L851 4.7µH J828 R826 1 R823 18k 1W L856 6.8µH R827 1.5 R828 1.5 R829 10k C860 0.1 -34V C857 2200 /10V C856 11 D832 AG01 L862 10µH R811 22 D829 24V C829 4.
P916 PP16 QN54 QN53 QN58 QN57 QN52 QN51 QG56 QN55 QF52 QF51 Q681 SY07 SY08 SY05 J902 U055 SY17 SY09 SY03 STOP CDR SY01 PLAY CDR SY23 PY26 WA386K103-0 STORE MENU SY26 SY22 WY03 EASY JOG WY02 PY36 WA386K104-0 41 SY02 REC PY46 WY04 CANCEL DELETE RY06 WY04 RY21 CDR SELECT RY22 RY25 U012 U011 REW FINALIZE CY11 QY04 QY02 U016 U015 TYPE REC DY03 SY04 U013 SOURCE RY08 PY36 PY26 U030 C901 INT EXT LCH GND RCH RY01 RY02 RY03 QY03 U017 U106 U110 U108 U107 U111 U059 U058 U
12. EXPLODED VIEW AND PARTS LIST W8 0 1 SYMBO L MARK MAT ERIAL / F INISH PART S NAME ST YL E 5126 3 X8 ( M) 5110 + B. H. M. SCREW (M ) ST EEL / COPPER 5126 + B. H. T AP T I T E SCREW W/ WASHER ( U) ST EEL / BL ACK 5127 + B . H. T A P T I T E S CRE W (W/ ) 5128 + B. H. T AP T I T E SCREW( B T YPE) 5150 + F . H.
POS. NO 001B 001B 002B 003B 004B 010B 010B 011B 012B 013B 020B 021B 021B 022B 022B 023B 025B 025B 026B 026B 030B VERS. COLOR PART NO.
13. ELECTRICAL PARTS LIST NOTE ON SAFETY FOR FUSIBLE RESISTOR : ASSIGNMENT OF COMMON PARTS CODES. RESISTORS ➀ Resistance value { Examples ; ➀ Resistance value 0.1 Ω .... 001 10 Ω .... 100 1 kΩ .... 102 100 kΩ .... 104 0.5 Ω .... 005 18 Ω .... 180 2.7 kΩ .... 272 680 kΩ .... 684 1 Ω .... 010 100 Ω .... 101 10 kΩ .... 103 1 MΩ .... 105 6.8 Ω .... 068 390 Ω .... 391 22 kΩ .... 223 4.7 MΩ .... 475 Note : Please distinguish 1/4W from 1/6W by the shape of parts used actually.
POS. NO VERS. COLOR PART NO. (FOR PCS) DESCRIPTION C801 C810 C811 C814 C819 C820 C821 C825 C826 C827 C828 C829 C833 9965 000 06375 4822 124 40763 4822 122 40617 4822 122 40617 9965 000 04979 9965 000 06376 9965 000 04981 9965 000 04980 9965 000 04980 9965 000 06377 9965 000 04980 4822 124 80067 4822 124 41535 P816-POWER CIRCUIT BOARD P816-CAPACITORS CER. 82 pF J 500V CH ELECT. 2.2µF M 50V RA-2 CER. 0.1µF +80%-20% 50V DC CER. 0.1µF +80%-20% 50V DC FILM ECQUL 0.1µF 250V AC FILM ECQUL 0.
POS. NO VERS. COLOR PART NO. (FOR PCS) DESCRIPTION JT02 4822 124 41539 5322 122 32265 4822 122 40617 4822 122 40617 4822 122 40617 5322 122 32265 5322 122 32265 4822 124 12404 4822 124 80119 4822 124 80119 5322 122 32265 5322 122 32265 4822 122 40617 5322 122 32265 5322 122 32265 PP16-REAR PANEL CIRCUIT BOARD PP16-CAPACITORS ELECT. 47µF M 16V RA-2 CER. 100pF J CH 50V BLK CER. 0.1µF +80%-20% 50V DC CER. 0.1µF +80%-20% 50V DC CER. 0.1µF +80%-20% 50V DC CER. 100pF J SL 50V GRN CER.
POS. NO VERS. COLOR PART NO. (FOR PCS) DESCRIPTION PART NO. (MJI) SY15 SY21 VX01 XY01 ZY01 SY22 SY23 SY26 DY01 4822 276 13732 PUSH SWITCH SKQNAE H/5MM 160GF 9965 000 05916 DISPLAY UNIT FTD BJ727GNK 15GRID X 22ANODE 4822 242 72066 SERAMIC VIB. CST8.