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DR6050 /F1N, /K1G, /N1G
Service
/F1B, /K1B, /N1B, /U1B
Manual Compact Disc Recorder
www.electronicsrepair.net
CD RECORDER DR6050
Recordable
ReWritable
STANDBY STORE/MENU EASY JOG CANCEL/DELETE
POWER ON/OFF
STOP PLAY/PAUSE OPEN/ OPEN/ STOP PLAY/PAUSE
CLOSE CLOSE
REC CDR CD DJ MODE
PHONES
REC TYPE SOURCE ERASE FINALIZE
PUSH ENTER
REMARK : This service manual explains them by extracting specifications
designed for the model DR6050 only. The explanation for CD-R module
"MAR775" (Loader : CDL4009' +
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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 speci
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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-RW discs (CD-Re Writable disc). Playback & Recording and Disc CD-RW CDR Disc SCMS Professional Disc Consumer Disc Professional Disc Consumer Disc CD non non non non Finalized Finalized Finalized Finalized Pla
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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'). Undernea
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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 ............
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3. WARNINGS WARNING ESD WAARSCHUWING All ICs and many other semiconductors are susceptible to Alle IC´s en vele andere halfgeleiders zijn gevoelig voor electrostatic discharges (ESD). Careless handling during electrostatische ontladingen (ESD). repair can reduce life drastically. Onzorgvuldig behandelen tijdens reparatie kan de levensduur When repairing, make sure that you are connected with the drastisch doen vermindern. Zorg ervoor dat u tijdens reparatie same potential as the m
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4. SERVICE HINTS 5. SERVICE TOOLS Audio signals disc 4822 397 30184 Disc without errors (SBC444)+ Disc with DO errors, black spots and fingerprints (SBC444A) 4822 397 30245 Disc (65 min 1kHz) without no pause 4822 397 30155 Max. diameter disc (58.0 mm) 4822 397 60141 Torx screwdrivers Set (straight) 4822 395 50145 Set (square) 4822 395 50132 13th order filter 4822 395 30204 Hexagon socket screw button (No. 1.5) 5
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6. Diangostic Software 6.2.2 Requirements to perform the test 6.1 Dealer mode Working keyboard to start up the test. The purpose of the dealer mode is to prevent people taking out Working local display to check the output messages. 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 un
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6.3 Electrical service diagnostics ELECTRICAL SERVICE DIAGNOSTICS (software versions, test for defective components) If power ON, switch power OFF Load CD-DA disc (SBC444A) Press + simultaneously and switch ON unit PLAYER LOADER TESTS INFORMATION CDR LOADER TEST Display : ABORT TEST CD-DA disc must be loaded "PLAYER ID" "SW VERSION BACK END" Display shows current disc time "SW VERSION CDR LOADER" (CDR775 "SW VERSION CD LOADER") CDR MAIN BOARD TEST NO Display : "BERR1" Press
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6.3.1 Description 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, The intention of the electrical service diagnostics is to show the middle and end of the disc. 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 DR6050 and CDR load
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6.4.2 Requirements to perform the test 6.5.1 Description Working keyboard to cycle through the tests and to start up This test is initiated by pressing [ERASE] and [RECORD] the test. simultaneously while switching on the unit. The player will Working local display to check the output messages. 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. The 6.4.3 Description o
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7. Faultfinding trees 7.1 CDR-Module NO DISC LOADED SWITCH ON POWER CHECK: MAINS, MAINS CABLE POWER SUPPLY (SEE FAULT FINDING GUIDE PSU) WIRING ON/OFF SWITCH FUSES VOLTAGES NO DISPLAY (SEE FAULT FINDING GUIDE DISPLAY BOARD) DISPLAY? WIRING SUPPLY VOLTAGES CLOCK SIGNAL 8MHz YES CONTROL SIGNALS KEYBOARD STANDBY LED ELECTRICAL SERVICE DIAGNOSTICS: DISPLAY TEST, KEYBOARD TEST CHECK: NO DISPLAY: WIRING "INSERT DISC" POWER SUPPLY VOLTAGES ELECTRICAL SERVICE DIAGNOSTICS: REPLACE CDR MODULE IF "DE
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CD-DA DISC LOADED CHECK: WIRING POWER SUPPLY VOLTAGES DISC NO ELECTRICAL SERVICE DIAGNOSTICS: DETECTION & READING? REPLACE CDR MODULE IF "DERRn" OR "BERRn" ERROR OCCURS YES CHECK: DISC: DIRT, SCRATCHES, DAMAGED... NO DISPLAY: ELECTRICAL SERVICE DIAGNOSTICS: “CD” & REPLACE CDR MODULE IF "DERRn" T.O.C. INFO? OR "BERRn" ERROR OCCURS YES CHECK: AUDIO CONNECTIONS & CABLES PRESS I/O BOARD W651 CONNECTION FLEX CONNECTION +5V (pin 8 conn. JJ01) KILL VOLTAGE (pin 7 conn. JJ01): ANALOG NO -8V DURIN
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CD-R DISC LOADED CHECK: DISC NO WIRING DETECTION & POWER SUPPLY VOLTAGES READING? ELECTRICAL SERVICE DIAGNOSTICS: REPLACE CDR MODULE IF "DERRn" OR "BERRn" ERROR OCCURS YES CHECK: DISPLAY: NO DISPLAY: NO DISC: DIRT, SCRATCHES, DAMAGED... “CD R” & “CD” & ELECTRICAL SERVICE DIAGNOSTICS: OPC INFO? T.O.C. INFO? REPLACE CDR MODULE IF "DERRn" OR "BERRn" ERROR OCCURS YES YES FINALISED CD-R DISC CD-R DISC PARTIALLY LOADED RECORDED OR EMPTY SEE CD-DA DISC FAULT FINDING START MANUAL RECORDING FROM ANALOG S
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CD-RW DISC LOADED CHECK: NO DISC WIRING DETECTION & POWER SUPPLY VOLTAGES READING? ELECTRICAL SERVICE DIAGNOSTICS: REPLACE CDR MODULE IF "DERRn" OR "BERRn" ERROR OCCURS YES CHECK: DISPLAY: NO DISPLAY: NO DISC: DIRT, SCRATCHES, DAMAGED... “CD RW” & “CD” & ELECTRICAL SERVICE DIAGNOSTICS: OPC INFO? T.O.C. INFO? REPLACE CDR MODULE IF "DERRn" OR "BERRn" ERROR OCCURS YES YES FINALISED CD-RW DISC CD-RW DISC PARTIALLY LOADED RECORDED OR EMPTY SEE CD-DA DISC FAULT FINDING START ERASING OF LAST RECORDED T
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7.2 CD Module CD MODULE NO DISC POWER ON CHECK FLEX CONNECTION FROM CDR MAIN BOARD POWER SUPPLY +5V, +12V AT TESTPOINTS 28 AND 27 +5V AT CONN. 1000 PINS 1 AND 3 +5V AT IC7005 PIN 14 +3V3 AT IC7000 PINS 5,17,21,57, CHECK SAFETY RESISTORS DISC NO +5V AT IC7020 PIN 25 DETECTION +10V AT IC7020 PINS 26, 27, 28 STARTS? +12V AT IC7021 PIN 5, CHECK SAFETY RESISTOR R3131 +12V AT IC7022 PIN 5, CHECK SAFETY RESISTOR R3154 +5V AT IC7025 PIN 16 YES +5V AT IC7202 PIN 38, CHECK SAFETY RESISTOR R3
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CD MODULE PLAYBACK PRESS DAC 7309 2 TESTPOINTS 20, 21, 22 : I S AT INPUT OF DAC 7309 CHECK POWER SUPPLY PINS 4, 13 NO CHECK CLK11 AT PIN 6 : 11.2896MHz AUDIO? PIN 11 : MUTE HIGH? TESTPOINTS 23, 24 : ANALOG OUTPUT? REPLACE DAC 7309 YES OPAMP 7120 TESTPOINTS 23, 24 : ANALOG OUTPUT? POWER SUPPLY: PIN 8 12V REPLACE OPAMP 7120 YES DAC 7309 DISTORTION? OPAMP 7120 NO NO FLEX TO CDR MAINBOARD AUDIO FLEX TO CD OUT BOARD CD OUT PCB? CHECK I/O BOARD, CD OUT BOARD YES PLAYBAC
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8. Faultfinding Guide Display controller TMP87C874F 8.1 Display Board TMP87CH74F ( QY01) is a high speed and high performance 8-bit single chip microprocessor, containing 8-bit A/D 8.1.1 Description of display board conversion inputs and a VFT (Vacuum Fluorescent Tube) driver. In this application, its functions are : General description slave microprocessor. The display board has three major parts : the FTD (Fluorescent FTD driver. Tube Display), the display controller TMP87CH74F and
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8.1.2 Test instructions 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 Supply voltages G13, G14 and G15 each have an extra current amplifier in line The display board receives several voltages via connector : QY02 for G13, QY03 for G14 and QY04 for G15. A typical JY01. grid line signal shows in the oscillogram below. VFTD : -35V ±5% measured at pin 2 of conn. JY01. VDC1-VDC2 : 3V8 ±10% measured b
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The pulses created this way arrive at pin 16 and 17 of the display controller. The first pulse to arrive tells the controller the PM3392A 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. +5V Push button operation This button connects to the key matrix lines and thus the operation is identical to the ordinary keys. Without being pressed, pin 4 of the easy jog main
