SERVICE
MANUAL
HHB MDP500 PORTABLE MINIDISC RECORDER
2
This service manual is intended for qualified service technicians; it is not meant for the casual do-it-yourselfer. Qualified
technicians have the necessary test equipment and tools, and have been trained to properly and safely repair complex
products such as those covered by this manual.
Improperly performed repairs can adversely affect the safety and reliability of the product and may void the warranty. If
you are not qualified to perform the repair of this product properly and safely, you should not risk trying to do so and
refer the repair to a qualified service technician.
This appliance is classified as a CLASS 1 LASER product, the CLASS 1 LASER product marking is on the rear of the
unit inside the battery compartment.
This equipment fully complies with 21 CFR 1040.10 and 1040.11
CAUTION: Invisible laser radiation when the unit is disassembled, avoid exposure to beam.
3
CONTENTS
PORTADISC MDP500 MiniDisc Recorder
SAFETY INFORMATION
1. DISASSEMBLY INSTRUCTIONS . . . . . . . . 5-12
Removing The Top & Bottom Panels . . . . . . . . . . 5-6
Removing The Front Panel . . . . . . . . . . . . . . . . . 7-8
Removing The Main CPU Circuit Board . . . . . . . . . . 9
Removng The MD Mechanism . . . . . . . . . . . . . . 10
Removing The Analog Main & Sub Circuit Boards 11-12
2. BLOCK DIAGRAM . . . . . . . . . . . . . . . . . . . . 13
3. CIRCUIT DIAGRAMS . . . . . . . . . . . . . . . . 15-21
CPU . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Power Supply CPU Board . . . . . . . . . . . . . . . . . . 17
Analog Inputs . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Analog Output & Digital Coax I/O . . . . . . . . . . . . . 21
4. PCB LAYOUTS . . . . . . . . . . . . . . . . . . . . 24-33
CPU PCB Component Side . . . . . . . . . . . . . . . . . 24
CPU PCB Solder Side . . . . . . . . . . . . . . . . . . . . . 25
Analog Main Solder Side . . . . . . . . . . . . . . . . . . 28
Analog Main Component Side . . . . . . . . . . . . . . . 29
Analog Sub PCB Solder Side . . . . . . . . . . . . . . . . 32
Analog Sub PCB Component Side . . . . . . . . . . . . 33
Front Panel PCB Parts Side . . . . . . . . . . . . . . . . 35
Front Panel PCB Solder Side . . . . . . . . . . . . . . . . 35
Deck Panel PCB . . . . . . . . . . . . . . . . . . . . . . . . 37
5. RESET INFORMATION . . . . . . . . . . . . . . . . . 39
6. TEST MODE & ALIGNMENT . . . . . . . . . . 41-47
Entering Test Mode . . . . . . . . . . . . . . . . . . . . . . 41
Switch Test Mode . . . . . . . . . . . . . . . . . . . . . . . 41
Mechanism Alignment Test Mode . . . . . . . . . . . . 41
Tools For Alignment . . . . . . . . . . . . . . . . . . . . . . 42
Button Operation During Alignment Test Mode . . . 42
The Alignment Modes . . . . . . . . . . . . . . . . . . . . 42
Test Mode Displays . . . . . . . . . . . . . . . . . . . . . . 43
Temperature Compensation Offset Adjustment . . . 43
Laser Power Adjustment . . . . . . . . . . . . . . . . . . 44
Traverse Adjustment . . . . . . . . . . . . . . . . . . . 44-45
Focus Bias Adjustment . . . . . . . . . . . . . . . . . 45-46
Error Rate Confirmation . . . . . . . . . . . . . . . . . . . 46
Creating A Continuously Recorded Test Disc . . . . . 47
7. IC INFORMATION . . . . . . . . . . . . . . . . . . 49-50
8. PARTS LIST . . . . . . . . . . . . . . . . . . . . . . 51-53
Main Frame . . . . . . . . . . . . . . . . . . . . . . . . 51-52
CPU Unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52
Analog Main Unit . . . . . . . . . . . . . . . . . . . . . . . 53
Analog Sub Unit . . . . . . . . . . . . . . . . . . . . . . . . 53
9. IDENTIFICATION OF PARTS . . . . . . . . . . . 55-58
Top Panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55
Front Panel . . . . . . . . . . . . . . . . . . . . . . . . . . . 56
Side Panels . . . . . . . . . . . . . . . . . . . . . . . . . . . 57
LCD Display . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58
10. TECHNICAL DATA . . . . . . . . . . . . . . . . . . . 59
CONTENTS
54
DISASSEMBLY INSTRUCTIONS
PORTADISC MDP500 MiniDisc Recorder
Instructions are best carried through in the following order:
a) Slide off the plastic battery cover
b) Remove the 4 screws (A) ~ fig.1
fig.1
c) Remove the 2 screws (B) ~ fig.2
fig.2
Removing The Top And Bottom Panels
DISASSEMBLY INSTRUCTIONS
PORTADISC MDP500 MiniDisc Recorder
6
d) Remove the 2 screws (C) ~ fig.3
fig.3
e) Remove the top panel.
Caution: Disconnect speaker connector (D) before fully separating the top panel
from the machine
~ fig.4
fig.4
f) Remove the bottom panel
7
DISASSEMBLY INSTRUCTIONS
PORTADISC MDP500 MiniDisc Recorder
a) Remove the dual concentric record level knob (A) by pushing through from behind the front panel ~ fig.5
b) Remove the phone level knob (B)~ fig.5
fig.5
c) Remove 2 screws (C) ~ fig.6
fig.6
Removing The Front Panel
DISASSEMBLY INSTRUCTIONS
PORTADISC MDP500 MiniDisc Recorder
8
d) Remove 2 screws (D) ~ fig.7
fig.7
e) Lift tab (F) ~ fig.6, then remove the front panel.
Caution: Disconnect ribbon cable (1) before fully separating
the front panel from the machine
~ fig.8
fig.8
9
DISASSEMBLY INSTRUCTIONS
PORTADISC MDP500 MiniDisc Recorder
a) Remove 4 screws (A) ~ fig.9
b) Remove the SPDIF optical protector plugs if connected
c) Lift up the CPU board carefully as the board is still attached by several cables
fig.9
d) Disconnect 8 cables (1 - 8) and remove the board ~ fig.10
fig.10
Removing The Main CPU Circuit Board
DISASSEMBLY INSTRUCTIONS
PORTADISC MDP500 MiniDisc Recorder
a) Remove 4 screws (A) ~ fig.11
fig.11
b) Ensure cables (3) and (4) are disconnected ~ fig.10
c) Lift out the MD mechanism
Removing The MD Mechanism
1110
DISASSEMBLY INSTRUCTIONS
PORTADISC MDP500 MiniDisc Recorder
a) Remove 4 screws (A) ~ fig.12
fig.12
b) Disconnect the XLR input cables, (9) and (10) ~ fig.13
c) Remove the Analog Sub pcb
d) Remove 2 screws (B) to remove the metal shield plate ~ fig.12
e) Remove the Record Level Pot locking nut and washer (C) ~ fig.13
f) Disconnect cable, (11) ~ fig.13
g) Remove 3 screws (D) ~ fig.13
Removing The Analog Main & Sub Circuit Boards
12
fig.13
h) Remove 5 screws (E) ~ fig.14
i) Remove the connector side panel (F) ~ fig.14
j) Lift out the Analog Main pcb.
fig.14
DISASSEMBLY INSTRUCTIONS
PORTADISC MDP500 MiniDisc Recorder
13
BLOCK DIAGRAM
PORTADISC MDP500 MiniDisc Recorder
15
CPU
PORTADISC MDP500 MiniDisc Recorder
17
POWER SUPPLY CPU BOARD
PORTADISC MDP500 MiniDisc Recorder
19
ANALOG INPUTS
PORTADISC MDP500 MiniDisc Recorder
21
ANALOG OUTPUT & DIGITAL COAX I/O
PORTADISC MDP500 MiniDisc Recorder
24
CPU PCB COMPONENT SIDE
PORTADISC MDP500 MiniDisc Recorder
25
CPU PCB SOLDER SIDE
PORTADISC MDP500 MiniDisc Recorder
28
ANALOG MAIN SOLDER SIDE
PORTADISC MDP500 MiniDisc Recorder
29
ANALOG MAIN COMPONENT SIDE
PORTADISC MDP500 MiniDisc Recorder
32
ANALOG SUB PCB SOLDER SIDE
PORTADISC MDP500 MiniDisc Recorder
33
ANALOG SUB PCB COMPONENT SIDE
PORTADISC MDP500 MiniDisc Recorder
35
FRONT PANEL PARTS & SOLDER SIDE
PORTADISC MDP500 MiniDisc Recorder
37
DECK PANEL PCB
PORTADISC MDP500 MiniDisc Recorder
There are 4 types of reset function which may be used to eliminate abnormal behaviour in the Portadisc. If having
implemented all the 4 reset types, and the MDP500 has not returned to normal behaviour, then investigate the
possibility of a fault or misalignment in the machine.
The four reset types are listed below:
1) F1 +F2 reset. Resets factory defaults
2) F1 +F3 reset. Resets factory defaults, user set-ups, clock
3) Power reset. Remove all power from machine. Remove external dc supply and batteries. Re-connect power and
power on.
4) System reset. Remove bottom panel. Locate and press SW1 on the main pcb.
3938
RESET INFORMATION
PORTADISC MDP500 MiniDisc Recorder
4140
TEST MODE & ALIGNMENT
PORTADISC MDP500 MiniDisc Recorder
There are two test modes.
1) Switch Test Mode
2) Mechanism Alignment Test Mode
When ejecting a disc, always ensure that the disc has stopped rotating by pressing STOP. In addition, please be aware
that the record protection tab on a mini-disc is not detected in test mode, therefore it is possible to overwrite
recorded material.
Hold down the F1 and Display buttons whilst simultaneously pressing the power switch. The Portadisc will appear to
have booted up in normal operation mode. Wait for about 5 seconds then press the Mark button. The MDP500 has
now entered 'SWITCH Test Mode'. This enables the engineer to check the operation of each of the switches on the
machine.
Each button has a unique test code as listed in the following table:
BUTTON CODE BUTTON CODE
F1 K03 PAUSE K02
F2 K09 KEYHOLD K13
F3 K0B OPEN K10
LIGHT K01 EDIT K11
DISPLAY K10 AMS BACK K0F
INPUT K12 AMS FFWD K0E
MARK K07 << K0C
SYSTEM K05 PLAY K0D
SETUP K04 >> K0A
RECORD K08 STOP K06
To exit from 'SWITCH Test Mode', press the POWER button until POWER DOWN appears in the display.
Hold down the F1 and Display buttons whilst simultaneously pressing the power switch. The Portadisc will appear to
have booted up in normal operation mode. Wait for about 5 seconds then press the STOP button. Then press the
LIGHT button. TEMP ADJUST will be displayed.
Exit Alignment test mode by pressing SETUP then powering down.
Note:
The above procedures should be followed exactly otherwise spurious display information may result.
Entering Test Mode
Mechanism Alignment Test Mode
Switch Test Mode
TEST MODE & ALIGNMENT
PORTADISC MDP500 MiniDisc Recorder
Oscilloscope; MD-LPM1 laser power meter; voltmeter; Sony test disc TDYS-1; Continuously recorded disc (see end
of this section for details on how to create one of these discs).
BUTTON FUNCTION
AMS BACK Cycles back through the various alignment pages and used to adjust parameter values
OPEN Ejects the disc
AMS FFWD Cycles FFWD through the various alignment pages and used to adjust parameter values
PLAY Spindle servo ON
>> Used to manually traverse the sled assembly towards the outer diameter
STOP Stops rotation of the disc. This should always be pressed before ejecting the disc. Also turns
off laser.
<< Used to manually traverse the sled assembly towards the inner diameter
DISPLAY Toggles between the various test mode displays (see below)
F1 YES
F3 NO
Select the alignment mode by using the AMS BACK and FFWD buttons. Enter the alignment mode by pressing F1. Exit
the alignment mode by pressing F3.
ALIGNMENT MODE DESCRIPTION
TEMP ADJUST Temperature compensation offset
LDPWR ADJUST Laser Power adjustment
LDPWR CHECK Laser Power check
EFBAL ADJUST Traverse adjustment
FBIAS ADJUST Focus Bias adjustment
FBIAS CHECK Focus Bias check
CPLAY MODE Continuous playback mode
CREC MODE Continuous record mode
EEP MODE Do not use
Tools For Alignment
Button Operation During Alignment Test Mode
The Alignment Modes
4342
TEST MODE & ALIGNMENT
PORTADISC MDP500 MiniDisc Recorder
The display button is used to toggle through the following display pages:
a) Alignment Mode b) Error rate display c) Address display d) Auto gain display e) IVR display
The Auto gain and IVR displays are not used during servicing.
1. Error Rate Display
C1 = XXXX AD = XX
C1 indicates the data error rate
AD indicates the address error rate
2. Address display
h = header address; s = sub-code Q channel address; a = ADIP (address in pre-groove) address.
If '----' is displayed, then the address can not be read.
The header address (h) is the unique address of each data block and is contained within the data itself.
The sub-code Q channel (s) contains the address information extracted from the sub-code data. This should be the
same as the header address.
The ADIP address (a) is the unique address pre-stamped on a recordable disc using modulated wobble.
3. Auto Gain Display
AG F=XX T=XX
F indicates acquired Focus Auto Gain value
T indicates acquired Tracking Auto Gain value
This adjustment saves the temperature data as a 25oC reference for the alignment process.
· It is not necessary to perform this alignment unless the laser assembly is replaced
· Perform this adjustment just after turn on in an ambient temperature of between 22 to 28oC.
a) Use the AMS buttons to locate the TEMP ADJUST page, then press F1 to select.
b) Ensure that TEMP = XX where XX falls within the range 'E0-EF', 'F0-FF', '00-0F', '10-1F', '20-2F'.
c) Press F1 to SAVE (SAVE will briefly be displayed) or press F3 to exit without saving.
Test Mode Diisplays
Temperature Compensation Offset Adjustment
TEST MODE & ALIGNMENT
PORTADISC MDP500 MiniDisc Recorder
This adjustment requires the use of a laser power meter. It is highly recommended that the SONY MD-LPM1 Mini-disc
Laser Power Meter (Part No. 9-948-310-40) is used for this adjustment as it allows for more accurate and reliable
adjustment. This meter is built in to a minidisc case so that the meter can be loaded using the MD loading
mechanism.
a) Insert the laser power meter. Use the << and >> buttons to position the laser so that it is approximately in the
middle of the photo sensor of the power meter.
b) Use the AMS buttons to locate the LDPWR ADJUST page, then press F1 to select. The display should show 'LD
0.9mW $XX'.
c) Use the AMS buttons to adjust for a laser power of between 0.80 to 0.96mW. Press F1 to save.
d) The display should now show 'LD 7.0mW $XX'. Use the AMS buttons to adjust for a laser power of between 6.8
to 7.2mW. Press F1 to save. Note: Do not perform the emission with 7mW for more than about 15 seconds
continuously.
e) The display should now return to the LDPWR ADJUST page. Use the AMS buttons to locate the LDPWR CHECK
page. Press F1 to cycle through the various powers and check that the readings are correct. Press F3 to exit.
a) Connect 1 channel of an oscilloscope to TE (Tracking error) and VC (Voltage reference for servo).
The location of the TE and VC test points are shown in the following diagram:
Laser Power Adjustment
Traverse Adjustment
4544
TEST MODE & ALIGNMENT
PORTADISC MDP500 MiniDisc Recorder
b) Load a recordable 74 mini-disc into the machine and use the << or >> buttons to move the optical lens to about
the middle of the disc.
c) Use the AMS buttons to locate the EFBAL ADJUST page, then press F1 to display 'EFBAL MO-R'.
d) Press F1 again to turn on the laser, focus servo and spindle servo. 'EFB = XX MO-R' will be displayed. Use the
AMS buttons to adjust for minimum tracking offset so that A = B as shown in the picture below.
e) Press F1 to save the adjustment setting. The display will then show 'EFBAL MO-P'.
f) Press F1 again to turn on the laser, focus servo and spindle servo. 'EFB = XX MO-P' will be displayed. Use the
AMS buttons to adjust for minimum tracking offset so that A = B as shown in the picture above.
g) Press F1 to save the adjustment setting. The display will then show 'EFBAL MO-W'.
h) Press F1 again to turn on the laser, focus servo and spindle servo. 'EFB = XX MO-W' will be displayed. Use the
AMS buttons to adjust for minimum tracking offset so that A = B as shown in the picture above. Caution: This
adjustment sets the tracking offset during the record process, therefore do not use any disc where you want to
preserve the data.
i) Press F1 to save the adjustment setting. The display will then show 'EFBAL CD'.
j) Load test disc TDYS-1 or a pre-mastered high quality disc (CD pits and lands).
k) Press F1 again to turn on the laser, focus servo and spindle servo. 'EFB = XX CD' will be displayed. Use the AMS
buttons to adjust for minimum tracking offset so that A = B as shown in the picture above.
l) Press F1 to save the adjustment setting. The display will then show 'EFBAL ADJUST'.
m) Eject the disc.
a) Load a 'continuously recorded disc'. Refer to 'Creating a Continuously Recorded Disc' below.
b) Use the AMS buttons to locate the CPLAY MODE page.
c) Press F1 to display CPLAY MID. As soon as 'C1 = XXXXAD =XX' is displayed, press F3.
d) Use the AMS buttons to locate the FBIAS ADJUST page.
e) Press F1 to display 'XXXX/XX a=XX'. The first 4 digits indicate the C1 error rate, the next 2 digits indicate ADER
(address error rate) and the a=XX indicates the focus bias value.
f) Use the forward AMS button to adjust for a focus bias value which produces an average C1 error rate of 220.
The C1 error rate will vary quite considerably.
g) Press the F1 button to save and to display 'XXXX/XX b=XX'.
Focus Bias Adjustment
TEST MODE & ALIGNMENT
PORTADISC MDP500 MiniDisc Recorder
h) Use the backward AMS button to adjust for a focus bias value which produces an average C1 error rate of 220.
i) Press the F1 button to save and to display 'XXXX/XX c=XX'.
j) Check that the C1 error rate is less than 50 and ADER is less than 2.
k) Press the F1 button to save and to display 'XX-XX-XX (XX)'. If the (XX) value is more than 20, then press F1. If the
(XX) value is less than 20, press F3 and repeat the adjustment from step (b).
The relationship between the C1 error rate and the focus bias values a, b and c are shown in the graph below.
1. CD (Pre-mastered) Error rate check
a) Load test disc TDYS-1
b) Use the AMS buttons to display the CPLAY MODE
c) Press F1 to display CPLAY MID. The display will change to show the C1 error rate.
d) C1 error rate should be below 20.
e) Press F3 to stop.
2. MO Error rate check
a) Load a continuously recorded disc.
b) Use the AMS buttons to display the CPLAY MODE
c) Press F1 to display CPLAY MID. The display will change to show the C1 and ADER error rates.
d) C1 error rate should be below 50 and ADER below 2.
e) Press F3 to stop.
Error Rate Confirmation
4746
TEST MODE & ALIGNMENT
PORTADISC MDP500 MiniDisc Recorder
A continuously recorded disc should only be created using a well-aligned machine. This disc is required for performing
focus and error rate checks and adjustments.
1. Insert a fresh blank disc.
2. Use the AMS buttons to locate the CREC MODE page.
3. Press F1 to display CREC MID. The display will show the starting address of '0300' and recording will commence
automatically.
4. After 5 minutes, press F3 to stop recording.
5. Press OPEN to eject the disc.
Creating A Continuously Recorded Test Disc
CONTROL INPUT
COMMON OUTPUTS
B A X
Y
0 0 X0
Y0
0 1 X1
Y1
1 0 X2
Y2
1 1 X3
Y3
Function Table
IH = Inhibit, When IH is low, outputs are ON.
4948
IC INFORMATION
PORTADISC MDP500 MiniDisc Recorder
AK4520A 20Bit ADC/DAC
74HC4052 Analogue Multiplexer/Demultiplexer
CONTROL INPUT
COMMON OUTPUTS
B A X
Y
0 0 X0
Y0
0 1 X1
Y1
1 0 X2
Y2
1 1 X3
Y3
IC INFORMATION
PORTADISC MDP500 MiniDisc Recorder
BA3308F ALC
NJM2360
No. Part Name Part Code
1/1 Front Panel (ABS) 40-031-01
1/2 Battery housing (ABS) 43-055-01
1/3 Battery Cover (ABS) 43-056-02
1/4 Connector panel (ABS) 44-015-02
1/5 Knob,Headphone-Level 51-047-04
1/6 Knob, Rec-Level[R] 51-048-14
1/7 Knob, Rec-Level[L] 51-049-14
1/8 Knob-Rec 51-050-14
1/9 Keytop-Pause 51-051-14
1/10 Keytop-Power 51-052-04
1/11 Keytop-S-(a) light,mark 51-053-04a
1/12 Keytop-S-(b) disp, syst 51-053-04b
1/13 Keytop-S-(c) input, set 51-053-04c
1/14 Keytop-F F1-F3 51-054-03
1/15 Keytop-Deck (play etc) 51-055-02
1/16 Knob-Lock 51-056-03
1/17 LCD-Display window 55-011-04
1/18 Cover-Top (ABS) 58-010-02a
1/19 Cover-Top (silicon) 58-010-02b
1/20 Cover-MD slot (ABS) 58-011-13
1/21 Chassis, complete 41-016-11
1/22 Cover-Upper 43-053-02
1/23 Cover-Bottom 43-054-22
1/24 Bracket-Deck 46-040-13
1/25 Bracket-Analog sub pcb 46-041-03
1/26 Bracket-Record VR 46-042-04
1/27 Bracket-Deck PCB 46-044-03
1/28 Bracket Lock (1) 46-045-04
1/29 Bracket Lock (2) 46-046-04
1/30 Terminal (1) Battery + 59-079-03
1/31 Terminal (2) Battery - 59-080-04
1/32 Screw mech retaining 59-083-04
1/33 O Ring P3 - mech Dia 2.5mm
1/34 Bushing - mech C30NG79-1
1/35 Bracket-Speaker 46-043-04
1/36 Rubber Foot TM182-816
1/37 Screw MD slot - selftap 2 off RH M3x6
1/38 Screw top cover - selftap 8 off RH M3x5
1/39 Screw batt term - selftap 2 off RH M3x5
1/40 Screw front panel PCB -st 5 off RH M2.6x6
1/41 Screw lock bracket - selftap 4 off CS M2x6
1/42 Screw case top / bott - black 4 off CS M3x6
1/43 Screw XLR panel - black 5 off RH M2.6x8
No. Part Name Part Code
1/44 Screw top / bott rear - black 4 off CS M2.6x6
1/45 Screw battery case 4 off RH M3x6
1/46 Screw PCB & brackets 21 off RH M3x4
1/47 Screw screen -ext jack 4 off RH M2.6x6
1/48 Screw front panel 4 off CS M2.6x4
1/49 Screw LCD PCB 4 off RH M2x6
1/50 AC Adapter 100-230 Volt MDP500ACADA
1/51 Rechargeable Battery MDP500B
1/52 Battery caddy MDP500BC
1/53 Soft case & strap MDP500CASE
1/54 Instruction Manual MDP500OPMAN
1/55 MD Mechanism KMK-260AAA
1/56 Electro Capacitor, C0 ECOS1CP153BB
1/57 LCD Module L2462B1J000
1/58 CN5 Conn AXP416618
1/59 CN6 socket conn AXM116215
1/60 XLR Connector XLM-3-31-PCS
1/61 Speaker S36G04K-3
1/62 CPU PCB UNIT complete 91-113-00
1/63 ANALOG MAIN PCB UNIT 91-114-00
1/64 ANALOG SUB PCB UNIT 91-115-00
1/65 FRONT KEY PCB UNIT 91-116-00
1/66 TOP KEY PCB UNIT 91-117-00
1/67 EXT DC PCB bare 01-129-04
1/68 DC INPUT JACK LGP6531-0400
1/69 CN102 (2-pin conn) 53253-0210
1/70 PHONE LEVEL PCB bare 01-128-04
1/71 Gang VR400 (monitor level) RK097121T
1/72 CN402 (6-pin conn) 53253-0610
1/73 FRONT KEY PCB bare 01-126-03
1/74 Slide Switch REC SW2 SSST010600
1/75 Tact Switch 11 of PT-007-C12B
1/76 LED (red) record TLR-226
1/77 LED (yellow) pause TLY-226
1/78 LED (green) charge TLG-226
1/79 Connector 52806-1610
1/80 TOP KEY PCB bare 01-127-04
1/81 Tact Switch 9 off PT-007-C12B
1/82 CN9 (7-pin conn) 53253-0710
1/83 Cable CN401-2 phones level 08-044-04
1/84 Cable CN8-9 CPU - Deck Key 08-046-04
1/85 Cable CN102-103 Ext DC I/p 08-047-04
1/86 Cable CN403-speaker 08-048-04
5150
PARTS LIST
PORTADISC MDP500 MiniDisc Recorder
Main Frame74HC4066 CMOS Quad Bilateral Switch
PARTS LIST
PORTADISC MDP500 MiniDisc Recorder
No. Part Name Part Code
1/87 Cable CN101-battery 08-049-04a
1/88 CN104-C0 (capacitor) 08-049-04b
1/89 Cable CN200, 201-XLR 08-050-04
1/90 Cable CN6-LCD 08-051-04
1/91 FFC Cable CN1 to mech UL20624-19
1/92 FFC Cable CN2 to mech UL20624-16
1/93 FFC Cable CN10 to CN11 UL20624-16
No. Part Name Part Code
2/1 CPU board 4 layer 01-123-03
2/2 IC8 (microprocessor) TMP90CM37F
2/3 IC1 UDA1325H
2/4 IC2 TC74HC00F
2/5 IC3 TC74LVX4245FS
2/6 IC4 TC74HC153F
2/7 IC5 AT24C16N-10SI
2/8 IC9 TC74HC373F
2/9 IC10 NJU6355EM
2/10 IC11 (Optical RX) TORX173
2/11 IC12 (Eeprom software) M27C256B-12FI
2/12 IC13 (Optical TX) TOTX173
2/13 IC14 TC7S14F
2/14 IC100 S80760AN-JQ-T1
2/15 IC101, 102 NJM2360M
2/16 IC103 MAX1627ESA
2/17 IC104 NJU7201U50
2/18 IC105, 106 LM2940CT-5.0
2/19 IC118 NJU7201U32
2/20 Q100, 102 2SJ525
2/21 Q101 2SC4116Y
2/22 D1,2,3,4,102, 107 1SS272
2/23 D5, D7,D8 1SS383
2/24 D100,101,103-105,109 U1GWJ44
2/25 USB Socket USB-212-T
2/26 Mini DIN Socket (remote) TCS7588-01-201
2/27 IC Socket 28 way AXS 102811K
2/28 CN1 (19-way conn) 52806-1910
2/29 CN2, CN10 (16-way conn) 52806-1610
2/30 CN6 (16-way conn) AXL216801
2/31 CN7 (20-way conn) Z-282-20FD
2/32 CN8 (7-pin conn) 53253-0710
No. Part Name Part Code
2/33 CN12 (4-way conn) Z-282-04FD
2/34 CN101 - 104 (2-pin conn) 53253-0210
2/35 Slide charge switch (SW100) SS324F-B12H6.5
2/36 Tact reset switch (SW1) PT-007-C12B
2/37 Back up Battery Ml2020/H1B
2/38 Crystal 22.5792MHz HCM49S
2/39 Crystal 48 MHz HC-49/US
2/40 Crystal 32.768 MHz FTS-26
2/41 X3 (12.228M) Resonator 12.2MTJOC4
2/42 Toroidal Coil, T100 TF0804S-201Y1R6
2/43 L9, L101, 102 470 uH RCH875 471K
2/44 L104 33uH RCH875 330K
2/45 L105, 107, L109 1mH RCH875 102K
2/46 L106 100mH RCH875 101K
2/47 Chip Coil L1, 4 47uH LQH3C470K04
2/48 Chip Coil L2 3.3uH LQG21N3R3K
2/49 Chip EMIFIL L3, 5, 6, 7, 8 BLM21A601F
2/50 Resistor metal oxide 20W 2W R101RS14AB3D
2/51 E Capacitor 6.3V 47u C14,24 0J-UTCXM470M
2/52 E Capacitor 16V 100u C39,41,
49,100,108,110,115,117-9 1C-UTES101M
2/53 E Capacitor 50V 47u C109,1131H-UTES470M
2/54 E Cap 6.3V 1000u C111,114 OJ-UTESM102M
CPU Unit
5352
PARTS LIST
PORTADISC MDP500 MiniDisc Recorder
No. Part Name Part Code
3/1 ANALOG MAIN PCB 01-124-03
3/2 IC209, 210 NJM2068M
3/3 IC211, 212 NJM2121M
3/4 IC213 BA3308F
3/5 IC214 TC74HC4094F
3/6 IC215 NJM2122M
3/7 IC217 TC74HC4066F
3/8 IC218, 403 TC74HC4052F
3/9 IC400 (AD/DA) AK4520A-VF
3/10 IC401 NJM4580ED
3/11 IC402 TC74HCU04F
3/12 IC404 NJM3414M
3/13 IC405 NJM2073M
3/14 Q204-208, 210 2SC4116Y
3/15 Q400-407 2SC4213B
3/16 Q408 2SA1163
3/17 D202, 203 1SS272
3/18 Audio Pin Jack Line OP LPR6520
3/19 Audio Pin Jack Dig I/O LPR6520
3/20 Headphone Jack S-G4617 #3
3/21 CN203 (12-way conn) LPC-12FDS
3/22 CN204 (4-pin conn) HKP-04M1
3/23 CN400 (20-pin conn) HKP20M1
3/24 CN401 (6-pin conn) 53253-0610
3/25 CN403 (2-pin conn) 53253-0210
3/26 Record Lvl Pot. VR200 RK0972220
3/27 Toroidal Coil, T400 TF0804S-201
3/28 Chip EMIFIL, L400-406 BLM21A601F
3/29 Inductor, L407,408 470uH RCH875 471K
3/30 E Cap 10V 220u C441-2 1A-UTCX221M
3/31 E Cap 6.3V 10u C443,445 OJ-UTCXS100M
3/32 E Cap 6.3V 100u C267,268
411,412,415,420,450 OJ-UTCXM101M
No. Part Name Part Code
4/1 ANALOG SUB PCB 01-125-04
4/2 IC200 NJM2110M
4/3 IC201, 203, 216 NJM2122M
4/4 IC202, 204, 207, 208 TC74HC4052F
4/5 IC205, 206 TC74HC4094F
4/6 Q200, 201 2SA1163
4/7 Q202, 203 2SC4116Y
4/8 D200, 201 1SS272
4/9 RL200, 201 Relay ATQ219SA
4/10 Condenser Mic. KUB2823
4/11 CN200, 201 (Inputs) 5530-03A
4/12 CN202 (12-pin conn) LPC-12T5M
4/13 E Cap 50V 22u C205-6,212-5 IH-UTCXM220M
4/14 E Cap 50V 100u C207,208 1H-UTES101M
Analog Main Unit
Analog Sub UnitMain Frame (continued)
TOP PANEL
PORTADISC MDP500 MiniDisc Recorder
1 BATTERY COMPARTMENT
This cover slides off (from right to left in this
view) and underneath is the battery caddy,
holding 8 x AA batteries.
2 KEYHOLD
Use this button to avoid any accidental operation
during recording. Each time you press the button
for more than two seconds, the hold function
changes from ‘Key Hold ON’ to ‘Key Hold OFF’ and
vice versa. The following buttons can still operate
even when the keyhold function is on: KEY HOLD,
LIGHT, MARK, DISPLAY and POWER. The remote
control connection will not be affected by this
function; i.e., it is always enabled.
3 OPEN
Press this button to eject the MD disc. This
function is disabled during recording.
4 EDIT
Use this button to enter the different edit modes.
5 AMS
Use the button to move back one or more
tracks and the button to move forward one
or more tracks. These buttons are also used in
editing and naming.
6 REWIND
Rewinds the track during playback.
7 PLAY
Use this button to start playing back the track.
8 FAST FORWARD
Fast forwards the track during playback.
9 STOP
Use this button to stop the playback or recording
operation.
10 RECORD VOLUME CONTROL
Dual concentric control for independent left and
right level adjustment.
11 INTERNAL MONO MICROPHONE
12 MONITOR SPEAKER
13 SHOULDER STRAP ATTACHMENT POINTS
5554
▲
▲
❙
▲
▲
❙
FRONT PANEL
PORTADISC MDP500 MiniDisc Recorder
14 PHONE LEVEL
Adjusts the volume level for the headphones and
monitor speaker. The control will pop out if you
press it. The monitor speaker will not function
during recording or when the headphones are
connected.
15 INPUT
Changes the following input related settings:
• Input source: MIC, LINE, DIGITAL, INT MIC, OFF
• Options for MIC: MIC-Att, BASSCUT, LIMITER,
PHANTOM
• Options for LINE: LIMITER
• Options for DIGITAL: COAXIAL, OPTICAL, USB
input connections
16 DISPLAY
Changes the display menu through disc time, level
margin, time & date.
17 LIGHT
Illuminates the display back light for a few seconds.
Hold it down for more than two seconds in order
for it to be continuously lit. Press it again to switch
off the light.
18 MARK
Marks the track number manually during record
mode and play/pause mode.
19 SYSTEM
Changes the following system settings: REC MODE,
TRACK-INCREMENT, THRESHOLD LEVEL,
AUTO-START/CUT, AUTO-PAUSE, PRE-RECORD,
HEADPHONE MONITOR, OVERWRITE MODE,
REPEAT MODE, DIGITAL OUTPUT and AUTO POWER
DOWN.
20 SETUP
Changes the following setup options: OPEN SETUP,
SAVE SETUP, CLOCK/DATE SETUP, DATE FORMAT,
PEAK HOLD METER and DISPLAY CONTRAST. Use
this button to save and recall set-ups. OPEN SETUP
consists of five user set-ups, which can be used to
store all the menu settings on the recorder, and
three recording presets – MIC REC, LINE REC and
DIGI REC.
21 REC LEVEL
Adjusts the analog recording level manually for mic
and line inputs. This control does not affect the
signal level when the AGC function is set to ‘ON’.
The outer control adjusts the left hand channel and
the inner control adjusts the right hand channel. A
friction lock between the two controls allows them
to move together but also be adjusted individually.
22 RECORD
Slide this button to the right to enter record mode.
23 POWER
Press this button for one second to power ON and
press for more than one second then release to
power OFF. This button does not turn the power off
during recording and TOC operations.
24 F1, F2, F3
Selects the parameters according to the
corresponding set-up functions on the display above.
25 LCD DISPLAY
Shows level metering, disc information, timing
information and all the menu select and control
displays.
26 REC LEVEL LOCK
Mechanically locks the REC LEVEL knob position in
order to avoid accidental adjustment. Slide this
button up to lock.
27 REC INDICATOR
This LED will light up red in record mode and blink
in record pause mode.
28 BAT CHG INDICATOR
This LED will light up green when charging the
NiMH rechargeable batteries.
29 PAUSE INDICATOR
This LED will light up yellow in pause mode.
30 PAUSE BUTTON
Use this button to pause the record or playback
operation. Pressing this button before pressing the
record button will put the recorder into record
pause mode, ready for recording.
SIDE PANELS
PORTADISC MDP500 MiniDisc Recorder
5756
31 PHONES SOCKET
1/4" jack socket for headphone connection.
32 LINE OUT LEFT AND RIGHT CONNECTORS
(Unbalanced RCA phono.) To send analog output
signals to other equipment.
33 COAXIAL I/O CONNECTORS
(Unbalanced RCA phono.) SPDIF digital coaxial
connectors.
34 MIC/LINE CONNECTORS
(Balanced XLR.) To connect either MIC or LINE
inputs.
35 REMOTE CONNECTOR
Parallel remote control connector.
36 USB CONNECTOR
USB interface port for a compatible computer.
37 OPTICAL I/O CONNECTORS
(TOSlink.) SPDIF digital optical connectors.
38 BATTERY COMPARTMENT
39 DC INPUT CONNECTOR
To connect the standard accessory AC adaptor,
or an optional car adaptor. DC12-14V.
40 MINIDISC SLOT
A disc must be inserted into this slot with the
arrow on the disc casing facing into the recorder.
41 SHOULDER STRAP ATTACHMENT POINTS
LCD DISPLAY
PORTADISC MDP500 MiniDisc Recorder
42-3 LEVEL INDICATOR
The bar meter shows the audio level in playback
and record. (42) left hand channel (43) right
hand channel.
44 RECORD/PLAYBACK MODE INDICATOR
The icons indicate pause, play and record
modes.
45 DISPLAY MODE INDICATOR
Displays the track number, record/play time,
remaining time, total recorded time, level
margin, date and time.
46 BATTERY INDICATOR
Indicates the battery capacity remaining or
whether the unit is connected to an external
power source (DC IN).
TECHNICAL DATA
PORTADISC MDP500 MiniDisc Recorder
5958
GENERAL
Format . . . . . . . . . . . . . . . . . . . MiniDisc digital audio system
Disc . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . MiniDisc
Recording method . . . . . . . . Magnetic field variation overwrite
Reading method . . . . . . . . . . . . . . Non contact optical pickup
Laser . . . . . . . . . . . Semiconductor laser (wavelength 780nm)
Record/playback time
Stereo mode . . . . . . . . . . . . . . . . . . . . . . . 80 minutes max
Mono mode . . . . . . . . . . . . . . . . . . . . . . . 160 minutes max
Rotation speed . . Approx 400-900rpm Constant Linear Velocity
Sampling frequency . . . . . . . . . . . . . . . . . . . . . . . . 44.1kHz
(with internal SRC to cater for 32kHz and 48kHz source signals)
Coding . . . . . . . . . . . . . . . . . . . . . . . . . . . . ATRAC Ver 4.5
Modulation system . . . . . . EFM (Eight to Fourteen Modulation)
Channels . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Power requirement . . . . . . . . . . . . . . . . . . . . . . 12-14V DC
Power consumption . . . . Approx 4.5W record, 3.5W playback
Weight with batteries . . . . . . . . . . . . . . . . . 2.0kg / 4lbs 7oz
Weight without batteries . . . . . . . . . . . . . 1.8kg / 3lbs 15oz
Dimensions (WxHxD) . . 225 x 57 x 180mm/10 x 2.2 x 7.1 ins
Internal speaker power . . . . . . . . . . . . . . . . . . . . . . 250mW
AUDIO
Frequency response . . . . . . . . . . . . . 10Hz to 20kHz, - 0.5dB
Wow & flutter . . . . . . . . . . . . . . . . . Below measurable limits
Signal to noise ratio (playback) . > 89dB bandwidth 22Hz to 22kHz
Dynamic range (line input) . . . . . . . . . . . . . . . . . . . . > 96dB
Microphone EIN . . . . . . . . . . . . . . . . . . > 122dB A-weighted
THD & N @ 1kHz ref 0dBFS . < 0.02% bandwidth 22Hz to 22kHz
I/O CONNECTIONS
Analog connectors
Balanced mic/line input
Connector type . . XLR 3: Pin 2 + Hot; pin 3 - Cold; Pin 1 Ground
Mic input level for 0dBFS (level control at max) . . . . . . -52dBu
Line input level for 0dBFS (level control at max) . . . . . . . -2dBu
Phantom power (mic inputs) . . . . . . . . . . . . . . . . +48V, 7mA
Unbalanced line output
Connector type . . . . . . . . . . . . . . . . . . . . . . . . . RCA phono
Output level . . . . . . . . . . . . . . . . +8dBu @ 0dBFS into >10k
Headphone output
Connector type . . . . . . . . . . . . . . . . . . . . . 1/4" stereo jack
Impedance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 2
Output power . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15mW
Remote control . . . . . . . . . . . . . . . . . . . . . . . . . . . . Parallel
Connector type . . . . . . . . . . . . . . . . . . . . . . . 8-pin mini DIN
Digital connectors
Coaxial digital input . . . . . . . . . . . . . . . . . . . . . . . . . . SPDIF
Connector type . . . . . . . . . . . . . . . . . . . . . . . . . RCA phono
Input impedance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 75
Input level . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.5V p-p
Optical digital input . . . . . . . . . . . . . . . . . . . . . . . . . . SPDIF
Connector type . . . . . . . . . . . . . . . . . . . . . . . . . . . . TOSlink
Coaxial digital output . . . . . . . . . . . . . . . . . . . . . . . . . SPDIF
Connector type . . . . . . . . . . . . . . . . . . . . . . . . . RCA phono
Output impedance . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 5
Output level . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.5V p-p
Optical digital output . . . . . . . . . . . . . . . . . . . . . . . . . SPDIF
Connector type . . . . . . . . . . . . . . . . . . . . . . . . . . . . TOSlink
USB (Ver 1) input / output
Connector . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Type B
Interface . . . . . . . . . . . . . . . . . . . . . . Windows 98/2000, Mac OS
ACCESSORIES
The following accessories are included as standard . . . . . . . . . .
Soft case, carrying strap, battery caddy with 8 x NiMH
rechargeable batteries, spare battery caddy, AC adaptor/charger,
HHB MD80 MiniDisc, operating instructions, quick reference guide
NOTE: The specifications and design of this product are subject
to change without notice, due to improvements.
US patents 4,790,016 and 4,914,701 and foreign equivalents
licensed from Dolby Laboratories Licensing Corportation.
Published by HHB Communications Ltd.
Copyright © 2001 HHB Communications Ltd.
All rights reserved.
Visit HHB online at www.hhb.co.uk
HHB Communications Ltd · 73-75 Scrubs Lane, London NW10 6QU, UK
Tel: 020 8962 5000 · Fax: 020 8962 5050 · E-Mail: sales@hhb.co.uk
HHB Communications USA LLC · 1410 Centinela Avenue, Los Angeles, CA 90025-2501, USA
Tel: 310 319 1111 · Fax: 310 319 1311 · E-Mail: sales@hhbusa.com
HHB Communications Canada Ltd · 260 King Street East, Toronto, Ontario M5A 4L5, Canada
Tel: 416 867 9000 · Fax: 416 867 1080 · E-Mail: sales@hhbcanada.com
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