Page 1
Service CDR420/U1B Manual Please use this service manual in conjunction with the user guide ( D.F.U. ). CDR420/U1B Part no. 90M19AK855020 (99-20-420S) Revised 2005.10...
1. CDR420 Specifications Digital Audio System System ................ Hard Disk Recorder Recording media..............2.5” 20GB HDD Burning CD media............CD-R, CD-RW discs Recording audio format MP3 (.mp3)........MPEG Audio Layer 3 compression WAVE (.wav) ............16 bit linear PCM Recording bit rate MP3 Stereo........
Depth ................229 mm (9.0”) Weight ................2.5 kg (5 lbs. 8 oz.) Included accessories AC adaptor ..................1 Stereo audio cable ................2 User Guide ..................1 Optional accessories** Lead Acid battery pack............RPS420 Carrying bag ................PRC300 Attaché carrying case..............CA300 **See www.d-mpro.com for details.
2. Firmware Update procedure The Firmware update procedure is accessed by keeping both the Jog wheel button and the Standby switch activated until the “?” icon starts blinking during the CDR420 boot up sequence. When the mode is entered, screen FW1 will be displayed. If the user places the device into Firmware update mode, the following sequence of screens will occur.
Page 6
Screen #FW2 – Firmware detected screen PROG REPEAT OVER -R W S T A N D B Y Active Icons Description Solid on while system checks HD for Firmware Solid on while system checks CD for Firmware Active Buttons Description <None>...
Page 7
Screen #FW4 – Exit Firmware Update screen PROG REPEAT OVER - R W Active Icons Description Solid on Active Buttons Description Jog Wheel +/- Toggles selection between “FW3” and “FW4” Jog Enter Exits the firmware update mode. Display time out Next Screen Default value MS2 →...
Page 8
Screen #FW7 – Firmware Updated screen This screen displays the updated version of the firmware programmed in the unit. PROG REPEAT OVER -R W S T A N D B Y Active Icons Description <None> Active Buttons Description <None> Display time out Next Screen Default value 2 seconds...
3. CDR420 Disassembly CDR420 disassembly (STEPS 1-8) For reassembly follow process in reverse installing instead of removing each part (STEPS 8-1). 1- Remove 3 Screws from bottom of backpanel ( use #2 Philips head) 2- Remove 4 Screws from bottom panel and remove bottom panel (use #2 Philips head)
Page 10
3- Remove 8 screws from internal brackets (use #2 Philips head) 4- To remove slotted bracket disengage plastic tap & pull back of bracket up and to the rear of the unit.
Page 11
5- To remove HD/CDR bracket disengage plastic tap & pull back of bracket up and to the rear of the unit. 6- Once the CD mechanism bezel is clear of the front panel flip the bracket out to the side of the unit.
Page 12
7- Remove IDE and power cable 8- Remove all interface connectors, then remove 5 screws for main board (use #1 Philips head)
Page 13
HD/CDR Bracket mounting procedure 1- Install power, IDE Cable 2- Insert HD/CDR bracket guide plate through front panel as shown 3- Angle front of HD/CD bracket through front panel. Note: Be careful not to damage plastic registration pins near front mounting holes. 4- When all mounting holes align, install mounting screws.
Page 15
Main board Board: PM01M Connector: JT51 mates with board PH02, connector JM71 Signal Description Signal Signal spec Used Microcontroller Function Pin Name Type at pin by uC? MIC/LINE_IN_L Left side microphone / line signal Input Analog from front mounted audio board +/-6.5V AGND Analog ground...
Page 16
AMP_MUTE Power amplifier mute signal. When Output 0-5VDC Microcontroller activates high, the speaker output and Active high PNP transistor with active headphone outputs are muted. low signal to mute the power amplifier SPKR_OFF Speaker off control signal feed Output 0-6.5VDC through to JM74.
Page 17
Ground AUX_LINE_L Left side auxiliary line input audio Input Analog feed. +/-6.5VAC ALC_OUT_R Processed right side ALC audio to Input Analog CODEC. +/-6.5VAC AGND Audio ground Ground Analog Ground ALC_OUT_L Processed left side ALC audio to Input Analog CODEC. +/-6.5VAC ALC_IN_R Processed right side audio feed to Output...
Page 18
Active high this signal when the device is in standby mode. POWER_SW Power toggle momentary switch Input 0-3.3VDC When activated, the signal Active low microcontroller toggles the sleep mode status. Connector: J834 mates with board PY01, connector JY01 Signal Description Signal Signal spec Used by...
Page 19
Connector: JU08 mates with PY81 connector JY81 Signal Description Signal Signal spec Used by Microcontroller Function Pin Name Type at pin Digital ground Ground Ground KEY0_IN System function keys (x5) Input Analog, A/D Input of uC determines momentary P.B. signals (mux’d) 0–3.3VDC which switch of the ladder network is active and...
EXPLODED VIEW FOR MODEL CDR420 9. MECHANICAL PARTS LIST...
Page 55
NOT STANDARD SPARE PART 001S 00M19AK805010 00M19AK805010 MASS CARTON MASTER CARTON 002S 00M19AK801010 00M19AK801010 PACKING CASE 003S 00M416K809010 00M416K809010 CUSHION CUSHION L 006S 00M416K809020 00M416K809020 CUSHION CUSHION R NOTE : "nsp" PART IS LISTED FOR REFERENCE ONLY, MARANTZ WILL NOT SUPPLY THESE PARTS.
Page 56
P.C.B. VERS. PART NO. POS. NO. PART NAME DESCRIPTION NAME COLOR (MACK) 001GM 420-001GM BRACKET POWER PCB BRACKET, MODEFIED 001M 86420-01 HOLDER HOLDER, HD/CDR 001ZM 420-001ZM POWER ADAPTOR POWER ADAPTOR, PACK, CAT: (DA420CDR/E1B) 004M 50-04-034 GROMMET GROMMET, SHOCK 007M 65-02-032 WASHER WASHER, SPLIT C, HD MOUNTING 008GM...
10. ELECTRICAL PARTS LIST NOTE ON SAFETY FOR FUSIBLE RESISTOR : PARTS INFORMATION RESISTORS The suppliers and their type numbers of fusible resistors 1) 00MGD05 × × × 140, Carbon film fixed resistor, ±5% 1/4W are as follows; 2) 00MGD05 × × × 160, Carbon film fixed resistor, ±5% 1/6W 1.
Page 58
P.C.B. VERS. PART NO. POS. NO. PART NAME DESCRIPTION NAME COLOR (MACK) PM01M PM01M 46420-419.5@00 CDR-420 CONTROL BOARD ASSY. PM01M BATT1 40-03-016 LITHIUM BATTERY 3V BUTTON PM01M BATT1 40-99-007 BATTERY HOLDER BATTERY HOLDER, SM PM01M 12-30-100-16 CAP. TANT, SM 10UF, 16V, B CASE PM01M 12-30-470-10 CAP.
Page 59
P.C.B. VERS. PART NO. POS. NO. PART NAME DESCRIPTION NAME COLOR (MACK) PM01M 12-20-022 CAP, CER, 0805 10UF, 6.3V, 10%, X5R PM01M 12-22-010-16 CAP. CER, 0603 0.1uF, 16V, 20%, Z5U PM01M 12-22-010-16 CAP. CER, 0603 0.1uF, 16V, 20%, Z5U PM01M 12-20-18PF CAP, CER, 0805 18PF, 50V, 5%, NPO...
Page 60
P.C.B. VERS. PART NO. POS. NO. PART NAME DESCRIPTION NAME COLOR (MACK) PM01M 17-01-024 DIODE, SCHOTTKY, SM 0.5 AMP, 30 V, SOD-123 PM01M 17-01-341 DIODE, SCHOTTKY, SM 1 AMP, 30 V, CASE SIZE SMA PM01M CR10 17-01-019 DIODE, SCHOTTKY, SM 250MW, 30 V, SOD-323 PM01M CR11...
Page 61
P.C.B. VERS. PART NO. POS. NO. PART NAME DESCRIPTION NAME COLOR (MACK) PM01M 04-20-27K RES. SM 5% 1/10W/0805 27K OHM PM01M 04-20-000 RES. SM 5% 1/10W/0805 ZERO OHM PM01M 04-20-27K RES. SM 5% 1/10W/0805 27K OHM PM01M 04-20-12K RES. SM 5% 1/10W/0805 12K OHM PM01M 04-20-1K...
Page 62
P.C.B. VERS. PART NO. POS. NO. PART NAME DESCRIPTION NAME COLOR (MACK) PM01M RN25 04-16P8R-10 RES, NET, SM, 16PIN, 8RES 10 OHM, 5% PM01M RN26 04-8P4R-10K RES, NET, SM, 8PIN, 4RES 10K OHM, 5% PM01M RN27 04-8P4R-470 RES, NET, SM, 8PIN, 4RES 470 OHM, 5% PM01M RN28...
Page 63
P.C.B. POS. VERS. PART NO. PART NAME DESCRIPTION NAME COLOR (MACK) 0-912M 0-912M 46420-420.2@00 CDR-420 IDE/HD/CDR CONTROL BOARD ASSY. 0-912M CX1 12-20-010 CAP, CER, 0805 0.1uF, 50V, 20%, Z5U 0-912M J4 32-01-281-44 SOCKET, PCB, 2MM (0.079) 44 Pos Dual Row 0-912M J5 32-01-270-50 CONN, RIBBON, 0.8MM, RECEPTACLE, STRAIGHT TYPE...
Page 64
10UF 16V PG01 CG41 00MEY10601620 00MEY10601620 ELECT CAP. 10UF 16V PG01 CG42 00MEY10601620 00MEY10601620 ELECT CAP. 10UF 16V PG01 CG51 00MDK96221300 CER. CAP. 220PF (GR39) NOTE : "nsp" PART IS LISTED FOR REFERENCE ONLY, MARANTZ WILL NOT SUPPLY THESE PARTS.
Page 65
00MNN05332610 CHIP RES. 3.3K OHM +-5% 1/16W PG01 R502 00MNN05332610 CHIP RES. 3.3K OHM +-5% 1/16W PG01 R503 00MNN05750610 CHIP RES. 75 OHM +-5% 1/16W NOTE : "nsp" PART IS LISTED FOR REFERENCE ONLY, MARANTZ WILL NOT SUPPLY THESE PARTS.
Page 66
00MNN05102610 CHIP RES. 1K OHM +-5% 1/16W PG01 RG41 00MNN05752610 CHIP RES. 7.5K OHM +-5% 1/16W PG01 RG42 00MNN05752610 CHIP RES. 7.5K OHM +-5% 1/16W NOTE : "nsp" PART IS LISTED FOR REFERENCE ONLY, MARANTZ WILL NOT SUPPLY THESE PARTS.
Page 67
00MNN05273610 CHIP RES. 27K OHM +-5% 1/16W PH01 RH08 00MNN05273610 CHIP RES. 27K OHM +-5% 1/16W PH01 RH09 00MNN05473610 CHIP RES. 47K OHM +-5% 1/16W NOTE : "nsp" PART IS LISTED FOR REFERENCE ONLY, MARANTZ WILL NOT SUPPLY THESE PARTS.
Page 68
MSVC1A686M 68UF 10V PH02 CM14 00MDK96221300 CER. CAP. 220PF (GR39) PH02 CM15 00MEY10601070 00MEY10601070 TANTL.CAP CHIP 10UF 10V PH02 CM16 00MDK98104200 CER. CAP. GRM39F104Z16 0.1UF NOTE : "nsp" PART IS LISTED FOR REFERENCE ONLY, MARANTZ WILL NOT SUPPLY THESE PARTS.
Page 69
00MNN05222610 CHIP RES. 2.2K OHM +-5% 1/16W PH02 RH06 00MNN05222610 CHIP RES. 2.2K OHM +-5% 1/16W PH02 RH53 00MNN05100610 CHIP RES. 10 OHM +-5% 1/16W NOTE : "nsp" PART IS LISTED FOR REFERENCE ONLY, MARANTZ WILL NOT SUPPLY THESE PARTS.
Page 70
00MNN05000610 CHIP RES. 0 OHM +-5% 1/16W PV01 RV34 00MNN05000610 CHIP RES. 0 OHM +-5% 1/16W PV01 RV35 00MNN05000610 CHIP RES. 0 OHM +-5% 1/16W NOTE : "nsp" PART IS LISTED FOR REFERENCE ONLY, MARANTZ WILL NOT SUPPLY THESE PARTS.
Page 71
00MHZ21005000 00MHZ21005000 CHIP DIODE 1SS301,DAN202U UMT TYPE PY71 DY76 00MHZ21005000 00MHZ21005000 CHIP DIODE 1SS301,DAN202U UMT TYPE PY71 RY71 00MNN05101610 CHIP RES. 100 OHM +-5% 1/16W NOTE : "nsp" PART IS LISTED FOR REFERENCE ONLY, MARANTZ WILL NOT SUPPLY THESE PARTS.
Page 72
RK11K113 V CC-CT L1=20MM ALPS PY91 RY93 00MRK05030990 00MRK05030990 VAR. RES. RK11K113 V CC-CT L1=20MM ALPS PY91 RY94 00MNN05000610 CHIP RES. 0 OHM +-5% 1/16W NOTE : "nsp" PART IS LISTED FOR REFERENCE ONLY, MARANTZ WILL NOT SUPPLY THESE PARTS.
Page 74
ADDENDUM A (CONTINUED) PM01M BOARD UPDATE (419-6) PART CHANGES P.C.B. VERS. PART NO. POS. NO. PART NAME DESCRIPTION TYPE NAME COLOR (MACK) PM01M PM01M 46420-419.6@00 CDR-420 CONTROL BOARD ASSY. CHANGE PM01M CR12 17-01-351 Diode, Schottky, 2A, 30 V...
Need help?
Do you have a question about the CDR420/U1B and is the answer not in the manual?
Questions and answers