Sony DMXP-01 Service manual

DIGITAL PORTABLE MIXER

DMX-P01

SERVICE MANUAL 1st Edition

! WARNING

This manual is intended for qualified service personnel only. To reduce the risk of electric shock, fire or injury, do not perform any servicing other than that contained in the operating instructions unless you are qualified to do so. Refer all servicing to qualified service personnel.

! WARNUNG

Die Anleitung ist nur für qualifiziertes Fachpersonal bestimmt. Alle Wartungsarbeiten dürfen nur von qualifiziertem Fachpersonal ausgeführt werden. Um die Gefahr eines elektrischen Schlages, Feuergefahr und Verletzungen zu vermeiden, sind bei Wartungsarbeiten strikt die Angaben in der Anleitung zu befolgen. Andere als die angegeben Wartungsarbeiten dürfen nur von Personen ausgeführt werden, die eine spezielle Befähigung dazu besitzen.

! AVERTISSEMENT

Ce manual est destiné uniquement aux personnes compétentes en charge de l’entretien. Afin de réduire les risques de décharge électrique, d’incendie ou de blessure n’effectuer que les réparations indiquées dans le mode d’emploi à moins d’être qualifié pour en effectuer d’autres. Pour toute réparation faire appel à une personne compétente uniquement.

DMX-P01

Manual Structure

Preface ....................................................................................................................... 3

Purpose of this manual .............................................................................................. 3

Relative manual ......................................................................................................... 3

Contents .....................................................................................................................4

1. Service Overview

1-1. Installation...................................................................................................1-1

1-1-1. Operating Environment .............................................................. 1-1

1-1-2. Specifications .............................................................................1-1

1-1-3. Power Supply ............................................................................. 1-1

1-1-4. Dimensions.................................................................................1-2

1-1-5. Connecting Cables / Connectors ................................................1-3

1-1-6. Input / Output Signals of Connectors .........................................1-4

1-1-7. Inside Switch / Jumper Pin Setting ............................................1-6

1-2. Locations of Main Parts ..............................................................................1-6

1-3. Panel Removal ............................................................................................1-7

1-3-1. Case (Top) / Case (Bottom) Removal ........................................ 1-7

1-3-2. Front Panel Removal ..................................................................1-7

1-4. Note on Servicing........................................................................................1-8

1-5. Note on Holder SP (Battery Slot) Replacement..........................................1-8

1-6. Note on MAIN Board Replacement............................................................1-9

1-7. Change of Output Level .............................................................................. 1-9

1-8. Modification to 12V-T POWER ...............................................................1-10

1-9. Check Mode ..............................................................................................1-11

1-10. Note on LCD Replacement .......................................................................1-15

1-11. Note on Battery Compartment Frame Replacement .................................1-15

DMX-P01

2. Spare Parts

2-1. Notes on Repair Parts..................................................................................2-1

2-2. Exploded Views ..........................................................................................2-2

2-3. Electrical Parts List .....................................................................................2-6

2-4. Supplied Accessories ................................................................................2-18

3. Semiconductor Pin Assignments

4. Block Diagram

Circuit Description ...................................................................................... 4-1

Overall.........................................................................................................4-2

5. Board Layouts

MAIN ..........................................................................................................5-2

INPUT ......................................................................................................... 5-4

SW...............................................................................................................5-4

VOL.............................................................................................................5-4

LCD.............................................................................................................5-5

MASTER.....................................................................................................5-5

FUNC ..........................................................................................................5-5

HP-VOL ......................................................................................................5-5

AES .............................................................................................................5-5

SW2.............................................................................................................5-5

OUTPUT ..................................................................................................... 5-5

6. Schematic Diagrams

MAIN ..........................................................................................................6-2

INPUT ....................................................................................................... 6-10

SW.............................................................................................................6-10

VOL...........................................................................................................6-10

LCD...........................................................................................................6-11

FUNC ........................................................................................................6-11

MASTER...................................................................................................6-11

HP-VOL ....................................................................................................6-11

SW2...........................................................................................................6-12

AES ...........................................................................................................6-12

OUTPUT ................................................................................................... 6-12

Frame Wiring ............................................................................................ 6-13

DMX-P01

Preface

Purpose of this manual

Relative manual

Manual Structure

DMX-P01 is a portable digital mixer designed for Professional electric news gathering (ENG) and electronic field production (EFP). DMX-P01 makes it ideal for use with digital video and audio recording media such as a camcorder and microphones, and so on.

This manual is the service manual for Portable Digital Mixer DMX-P01. This manual is intended for use by trained system and service engineers, and provides the installation and notes on servicing, and so on. And also, this manual describes items that premise the service based on the component parts such as parts list, semiconductor pin assignments, block diagram, board layouts, and schematic diagrams.

. Operating Instructions (Printed Manual) (Supplied with this unit)

Part number: 2-347-769-0X

. Operating Instructions (CD-ROM) (Supplied with this unit)

Part number: 2-347-770-0X

. “Semiconductor Pin Assignments” CD-ROM (Available on request)

This “Semiconductor Pin Assignments” CD-ROM allows you to search for semiconductor used in this unit. Semiconductors that cannot be searched for on this CD-ROM are listed in section 3 of this manual. Section 3 contains a complete list of all semiconductors used for this unit and their ID Nos., and thus should be used together with the CD-ROM. Part number: 9-968-546-XX

DMX-P01

Section 1 Service Overview

Describes the information on installing this unit, and the fundamental knowledge that is required to service (the locations of main parts, removal of cabinet, the procedure to change the output level, explanation of the check mode, notes, etc.)

Section 2 Spare Parts

Describes the exploded views, the mechanical parts list, and the electrical parts list.

Section 3 Semiconductor Pin Assignments

This section contains information on semiconductors used for this unit. It includes a complete list of the semiconductors and their ID Nos. for retrieving information on “Semiconductor Pin Assignments” CD-ROM, which is available separately. Refer to this section together with the “Semiconductor Pin Assignments” CD-ROM. Information on the semiconductors not contained in the CD-ROM at the time of issue this manual, is given in this section as well.

Section 4 Block Diagram

Describes the block diagram and the circuit description.

Section 5 Board Layouts

Describes the board layouts for this unit.

Section 6 Schematic Diagrams

Describes the schematic diagrams for this unit.

DMX-P01

Section 1

Service Overview

1-1. Installation

1-1-1. Operating Environment

Operating temperature: 0 dC to 45 dC (+32 dF to +113 dF) Storage temperature: Mass: Approx. 2.2 kg (4 lb 14 oz)

1-1-2. Specifications

Audio Characteristics

Frequency response: 20 Hz to 20 kHz, 0.5/_1 dB

Noise level (E.I.N): _130 dBu or less

T.H.D: 0.05% or less

Maximum output level: +24 dBu, load impedance 10 k Z Crosstalk: _90 dB or less (at 1 kHz)

Continuous Operation Time of Internal Battery

Specification

5 hours or more (under the following conditions)

Conditions

Input: CH-1 INPUT

LINE/MIC/MIC +48V switch: MIC Input gain control: _70 dB (fully clockwise) CH-1 Input level control: >_∞ (not fully counter-

CH-2 to 4 Input level controls: _∞ (fully counterclock-

Output: ANALOG OUTPUT L

Output LEVEL switch: +4 dBu HEADPHONES: Output 3 mW, 32 Z load LCD LIGHT switch: OFF SAMPLING RATE switch: 48kHz Environment temperature: Room temperature

Batteries to be used: 8 LR6/AA-size Sony

_20 dC to 60 dC (_4 dF to +140 dF)

(at a 48-kHz sampling frequency) 20 Hz to 40 kHz, 0.5/_3 dB (at a 96-kHz sampling frequency)

(A-weighted, mic input, 150 Z terminated, typical)

(at 1 kHz, 4 dBu)

_70 dBu, 1 kHz sine wave

clockwise)

wise)

+4 dBu, 600 Z load

(Approx. 25 dC)

alkaline batteries

1-1-3. Power Supply

Power requirements:

DC +10 V to +15 V (at the external power supply from the DC IN 10-15V connector)

Maximum power consumption:

1400 mA or less (at the external power supply from the DC IN 10-15V connector)

The unit can be powered in the following ways: . Internal batteries

Eight LR6 (size AA) alkaline batteries can be accommodated in the battery compartment.

. External battery

A lithium ion battery or nickel metal hydride battery which is connected to the DC IN 10-15V connector on the right panel. The unit is equipped with two types of DC IN 10-15V connector: an XLR 4-pin and a DC jack type connector. Select either one depending on the external battery you are using.

m . Do not connect external batteries to both XLR 4-pin

type connector and the DC jack at the same time. Be sure to connect the external battery to either one.

. Do not connect the external battery other than the BP-

90 type battery to the DC jack, because the polarity of the DC jack is different.

Power Supply for Check and Repair

Perform the check and repair by supplying DC +10 to +15 V from the DC regulated power supply capable of 3 A

or more output to the DC IN 10-15V connector.

For the names and functions of connectors and switches, refer to Operating Instructions.

DMX-P01

1-1

1-1-4. Dimensions

20612

266 285

Unit : mm

1-2

DMX-P01

1-1-5. Connecting Cables / Connectors

When connecting a cable with a connector at installation or service, use the following connectors and cables, or equivalents:

Left Panel

Panel Indication Name

INPUT: CH-1, 2, 3, 4 XLR 3P, female XLR 3P, male 1-508-084-11 CASCADE IN PHONO jack PHONO plug — DC OUT 200mA MAX 4P, female 4P, male 1-566-425-11

Corresponding connector / cable

Name Sony Part No.

Right Panel

Panel Indication Name

PHONES 3.5 mm TRS jack 3.5 mm TRS plug — ANALOG OUTPUT: TAPE OUT 3.5 mm TRS jack 3.5 mm TRS plug —

L, R XLR 3P, male XLR 3P, female 1-508-083-11 CAMERA Round 12P, female Round 12P, male 1-817-336-11

DIGITAL OUTPUT: AES/EBU XLR 3P,male Connecting cable BCD-3C/10C/30C Option

COAXIAL PHONO jack PHONO plug —

DC IN 10-15V XLR 4P, male XLR 4P, male 1-508-362-00

DC jack DC plug —

Corresponding connector / cable

Name Sony Part No.

(Supplied one with this unit)

(3 m/10 m/30 m)

Front Panel

Corresponding connector / cable

Panel Indication Name

Name Sony Part No.

PHONES 3P ø6.3 TRS jack 3P ø6.3 TRS plug —

DMX-P01

1-3

1-1-6. Input / Output Signals of Connectors

INPUT: CH-1, 2, 3 and 4 (XLR 3-pin, female): Left Panel

Analog audio signal input At the MIC setting:

Reference input level: _70 to _30 dBu, 2.2 kZ, balance Maximum input level: _50 to _10 dBu, 2.2 kZ, balance

At the MIC +48V setting:

External power output of DC +48 V

At the LINE setting:

Reference input level: _30 to +10 dBu, 10 kZ, balance Maximum input level:_10 to +30 dBu, 10 kZ, balance

132

(External view)

Pin Signal Description No. Name

1 GND GND of the analog audio signal input 2 HOT HOT of the analog audio signal input 3 COLD COLD of the analog audio signal input

CASCADE IN (PHONO jack): Left Panel

24-bit digital audio signal input in IEC60958 (S/P DIF) format Sampling frequency: 48 kHz or 96 kHz Input impedance: 75 Z

ANALOG OUTPUT: Right Panel

CAMERA (12-pin, female)

Analog audio signal input / output Reference input level: 0 dBu Reference output level: +4/_20/_60 dBu

AB DEHC

GJFK

(External view)

Pin Signal Description

A L HOT HOT of the L output of the master audio

B L COLD COLD of the L output of the master audio

C R HOT HOT of the R output of the master audio

D R COLD COLD of the R output of the master

E L HOT HOT of the L input of the camera return

F L COLD COLD of the L input of the camera return

G R HOT HOT of the R input of the camera return

H R COLD COLD of the R input of the camera return

J GND GND of the output of the master audio

K GND GND of the input of the master audio

L NC No connection M NC No connection

No. Name

signal

audio signal

signal

L and R (XLR 3-pin, male)

Analog audio signal output Load impedance: 600 Z or more Reference output level: +4/_20/_60 dBu Maximum output level: +24 dBu (at +4dBu output

setting)

(External view)

Pin Signal Description No. Name

1 GND GND of the analog audio signal output 2 HOT HOT of the analog audio signal output 3 COLD COLD of the analog audio signal output

1-4

TAPE OUT (3.5 mm TRS Jack)

Analog audio signal output Load impedance: 10 kZ or more, unbalance Reference output level: _10 dBu Maximum output level: +10 dBu

DMX-P01

DIGITAL OUTPUT: Right Panel

AES/EBU (XLR 3-pin, male)

24-bit digital audio signal output in AES/EBU (AES3-

1992) format Sampling frequency: 48 kHz or 96 kHz (Depends on SAMPLING RATE switch) Load impedance: 110 Z

PHONES (3.5 mm TRS jack): Right Panel PHONES (3-pin ø6.3 TRS jack): Front Panel

Analog audio signal output The output signal depends on the Headphones monitor mode switch on the front panel. Load impedance: 32 Z or more 300 mW or more (at the load of 32 Z)

(External view)

Pin Signal Description No. Name

1 GND GND of the digital audio signal output 2 HOT HOT of the digital audio signal output 3 COLD COLD of the digital audio signal output

COAXIAL (PHONO jack)

24-bit digital audio signal output in IEC60958 (S/P DIF) format Sampling frequency: 48 kHz or 96 kHz (Depends on

SAMPLING RATE switch)

Load impedance: 75 Z

DC IN 10-15V (XLR 4-pin, male): Right Panel

Input voltage: DC +10 to +15 V

(External view)

Pin Signal Description No. Name

1 GND GND of the external DC power input 2 NC No connection 3 NC No connection 4 +10-15V External DC power input

DC IN 10-15V (DC jack): Right Panel

Input voltage: DC +10 to +15 V

DMX-P01

(External view)

DC OUT (4-pin, female): Left Panel

Output voltage: DC +10 to +15 V

(Depends on DC IN 10-15V.)

1 2

(External view)

Pin Signal Description No. Name

1 GND GND of the DC output 2 NC No connection 3 NC No connection 4 +10-15V DC output

1-5

1-1-7. Inside Switch / Jumper Pin Setting

MAIN Board

S601

S602

TEST

UPDATE

TP602

HEATER TEST

S601: UPDATE Switch

This switch is to write software into the microcomputer. When you turn on the power of this unit while pressing this switch, the mode becomes the writing mode of the software.

S602: TEST Switch

When you turn on the power of this unit while pressing this switch, the mode turns into the check mode. For details on the check mode, refer to Section 1-8.

TP602: HEATER TEST Pin

This is for the check of the LCD heater operation on the LCD board. When this pin is short-circuited, the heater activates to allow you to check the heater operation as follows: . Check the change of the value of CHECK MODE: No.

15: LCD TEMP. When the heater activates, the value increases in several minutes. For the check mode, refer to Section 1-8.

. Check the change of the current value of external power

source. When the heater activates, the current increases by 160 - 240 mA.

The heater is activated only with the external power supply (DC IN 10-15V connector). When the power is supplied from the internal batteries, the heater is not activated.

1-2. Locations of Main Parts

MAIN board

Battery compartment

INPUT board

VOL board

1-6

SW2 board

AES board

OUTPUT board

HP-VOL board

MASTER board

LCD board

FUNC board

SW board

DMX-P01

1-3. Panel Removal

Special screws(M2.6) (with stopper)

K2.6 x 4

Front panel

Knob (large)

Knob (1) assembly

Knob (0) assembly

Step screw

1-3-2. Front Panel Removal

1-3-1. Case (Top) / Case (Bottom) Removal

Remove the Case (Top) and the Case (Bottom) as shown in the figure.

Before removing the Case (Bottom), be sure to turn off the power. When you turn on the power after the Case (Bottom) removal, refer to Section 1-4.

Step screws

Case (top)

1. Remove the Case (Top) and the Case (Bottom). (Refer to Section 1-3-1.)

2. Remove the Front Panel as shown in the figure.

Step screws

DMX-P01

Step screws

Case (bottom)

K2.6 x 4

Step screws

1-7

1-4. Note on Servicing

Never turn on the power while the Case (Bottom) is removed. When the Case (Bottom) is removed for the check of the MAIN board (B side), be sure to follow the following procedures:

Ignoring the following procedures may cause a trouble, because the GND for the board is not established.

1. Turn off the power, and remove the Case (bottom).

2. Solder the B-side lands of the EP101 and EP401 on the MAIN board with a wire of AWG18 or more.

3. Turn on the power, and perform the check.

4. After the check, turn off the power and remove the wire that was soldered in step 1.

5. Install the Case (Bottom).

Solder a wire thicker than AWG18.

1-5. Note on Holder SP (Battery Slot)

Replacement

1. When the Holder SP is installed in the battery slot, place the Holder SP confirming the positions of the lead wires (Red and White) as shown in the figure.

Frame guide (L)

White

Holder SP Red

BVTT

2.6 x 5

MAIN board (B side)

EP401

EP101

BVTT

2.6 x 5

BVTT

2.6 x 5

Frame guide (R)

2. After installing the battery slot (Frame Guide) onto the unit, confirm that the lead wires (Red and White) of the Holder SP are as shown in the figure.

White

1-8

Red

Frame guide (R)

DMX-P01

1-6. Note on MAIN Board Replacement

When the MAIN board is replaced with new one, the software version written in the built-in memory of IC609 (system-control microcomputer) on the MAIN board may be different from the latest one due to the bug fix. After replacing the MAIN board, be sure to confirm that the software is the latest version referring to technical memos. (For the way of version confirmation, refer to Section 1-9.) When a relevant technical memo is not found, the latest software is Ver 1.00. If the software version of the replaced MAIN board is not the latest one, write the latest software. For the way to write software, refer to the technical memo.

1-7. Change of Output Level

By the factory setting, the reference output levels for ANALOG OUTPUT L and R are set to +4 dBu at the LEVEL switch of +4. To change the reference output levels to +6, 0, or _3 dBu, change the following values to the corresponding values.

By this setting change, the output level also changes at the LEVEL switch is in at _60 and _20. The reference output level for TAPE OUT is not changed (_10 dBu).

Value Change List

Ref. No. Output Level (MAIN board)

R203, 206, 226, 229 15 k 18 kZ 10 kZ 6.8 kZ

R323, 324, 325, 326 120 kZ 220 kZ 47 kZ 47 kZ

R248, 249 12 kZ 15 kZ 12 kZ 12 kZ

R250, 251 4.7 kZ 4.7 kZ 12 kZ 12 kZ

R253, 255 100 kZ 100 kZ 3.3 kZ 3.3 kZ

R327, 328 not mounted not mounted 1 kZ not mounted

C204, 205, 220, 221 150 pF 120 pF 220 pF 270 pF

+4 dB

(Factory Setting)

(1-218-875-11) (1-218-877-11) (1-218-871-11) (1-218-867-11)

(1-218-897-11) (1-218-903-11) (1-218-887-11) (1-218-887-11)

(1-216-834-11) (1-218-875-11) (1-218-873-11) (1-218-873-11)

(1-216-829-11) (1-218863-11) (1-218-873-11) (1-218-873-11)

(1-216-845-11) (1-218-895-11) (1-218-859-11) (1-218-859-11)

(1-164-217-11) (1-162-928-11) (1-162-960-11) (1-164-388-11)

+6 dBu 0 dBu

(1-218-847-11)

_3 dBu

DMX-P01

1-9

1-8. Modification to 12V-T POWER

Following is the method to modify the power supply each input channel from 48V PHANTOM POWER to 12V-T (A-B) POWER.

Change the short-circuiting by solder to +12V side that is out of a white box as illustrated. Every input channel has three places to be modified.

CH-1 CH-2 CH-3 CH-4

MAIN board (B side)

For +48 V

For +12 V

For +48 V

For +12 V

For +48 V

CH-1

TP003 TP002

+12 V +48 V

+12 V +48 V +12 V +48 V

+12 V +48 V

CH-2

TP006 TP005

+12 V +48 V

+12 V +48 V +12 V +48 V

CH-3

TP009 TP008

+12 V +48 V

TP001

+12 V +48 V

TP004

+48 V +12 V

TP007

+12 V +48 V

1-10

For +12 V

For +48 V

For +12 V

+12 V +48 V

CH-4

TP012 TP011

+12 V +48 V

+12 V +48 V +12 V +48 V

+12 V +48 V

TP010

+48 V +12 V

DMX-P01

1-9. Check Mode

This section describes the check mode of this unit. The check mode has the following functions:

1. Display of software version: Check of software version

2. LCD test: Check for a lack of dot on LCD

3. Operational check: Operational check for the controls and switches

4. Loopback test: Operational check for the audio circuit

When the board is replaced or repaired, be sure to perform the checks in Check Mode. If a result for a check is out of specification, an improper connection, disconnection, or short-circuit is considered causative. In this case, perform the troubleshooting following the check route and referring to the block diagram and schematic diagrams.

. To enter into Check Mode:

(1) Remove the rear lid. (2) Turn on the power while pressing the S602 TEST

switch on the MAIN board.

. To exit Check Mode:

Turn off the power.

1. Display of Software Version

When you enter into the check mode, the software version number is displayed on the LCD.

SONY DMX-P01 Ver1.00

2. LCD Test

While the version is displayed on the LCD, turn the ADJUST knob to the right (one click). (Turning to the left displays the software version again.) The mode turns into the LCD test mode. All digits on the LCD are turned on and off alternately.

All digits are turned on

All digits are turned off

Specification: No improper or lack of indication Check route: LCD 801 (LCD board) ↔ IC610 etc.

(MAIN board) ↔ IC612 (System control/ MAIN board)

DMX-P01

1-11

3. Operational Check

In the LCD test mode, turn the ADJUST knob to the right. The mode turns into the operational check mode. The data stored in CPU or status for each operation is displayed on the LCD to perform the operational checks.

CHECK MODE:No. A B = C

The followings are displayed on A, B, and C of the above figure (screen display).

[A] : Item number of CHECK MODE [B] : Name of corresponding control or switch [C] : Value or mode by the operation of corresponding control or switch

The followings are the specified values for the items:

m . For the names and locations of controls and switches, refer to Operating Instructions. . Controls and switches without a board name described are located on the MAIN board.

CHECK MODE No. Item Description Check route Display

02 CH1 LEVEL Spec: RV3001-3004 (VOL board) 03 CH2 LEVEL 04 CH3 LEVEL 05 CH4 LEVEL

06 CH1 PAN Spec: RV3005-3008 (VOL board) 07 CH2 PAN 08 CH3 PAN 09 CH4 PAN

10 L MASTER LEVEL Spec: RV5001, 5002 (MASTER board) 11

12 FUNC RSW Spec: S4002 (FUNC board)

[A][A]

[A] Display

[A][A]

R MASTER LEVEL Position of L/R MASTER volume control Value

[B][B]

[B]

[B][B]

Position of Input level control Value Display [B] Display [C] IC604

_∞ 0

* IC609 (System control)

+10 255 *: The value changes in sequence by turning the control.

Position of PAN control Value Display [B] Display [C] IC607

* IC609 (System control)

(Center: Click position) 125 to 133

R 255 *: The value changes in sequence by turning the control.

Display [B] Display [C] IC608

_∞ 0

* IC609 (System control)

+10 255 *: The value changes in sequence by turning the control.

Position of FUNCTION switch Mode Display [B] Display [C] IC608

SLATE SLAT DISPLAY DISP IC609 (System control) SETUP SET LOCK LOCK

1-12

DMX-P01

CHECK MODE No. Item Description Check route Display

13 MONI RSW Spec: S5002 (MASTER board)

14 DC INPUT Spec: Q413 (Q409) DC-VOLT

15 LCD TEMP Spec: IC801 (LCD board)

16 CH1 LCF SW Spec: 17 CH2 LCF SW 18 CH3 LCF SW 19 CH4 LCF SW

20 CH1/2 LINK Spec: S2003, 2006 (SW board) 21 CH3/4 LINK Position of LINK/M-S switch Mode

22 MASTER LINK Spec: S5001 (MASTER board)

23 SLATE/OSC Spec: S2007 (SW board)

24 SAMPLING SW Spec: S8001 (SW2 board)

[A][A]

[A] Display

[A][A]

[B][B]

[B]

[B][B]

Headphones monitor mode switch Mode Display [B] Display [C] IC608

CAMERA CAME M-S M-S IC609 (System control) L + RL + R RR LL L/R L/R

Value on display [C] depends on internal/external power voltage.

Condition IC609 (System control) Display [C]

At DC 12 V (reference voltage) 136 ±10

Display [C] depends on temperature of LCD display.

Condition IC802 (LCD board)

Display [C] At 25 dC 65 ±10 IC609 (System control) (Room temperature: reference temperature)

Position of LCF switch Mode Display [B] Display [C] IC603

BB A A IC609 (System control) OFF OFF

Display [B] Display [C] IC603 ON ON

OFF OFF IC609 (System control)

Position of MASTER LINK switch Mode Display [B] Display [C] IC603

ON ON OFF OFF IC609 (System control)

Position of SLATE switch Mode Display [B] Display [C] IC603

ON ON OFF OFF IC609 (System control) 1kHz 1kHz

Position of SAMPLING RATE switch Mode Display [B] Display [C] IC603

48kHz 48kHz 96kHz 96kHz IC609 (System control)

S2001, 2002, 2004, 2005 (SW board)

DMX-P01

1-13

CHECK MODE No. Item Description Check route Display

25 BUS SELECT Spec: S8002 (SW2 board)

26 STEREO/MONO Spec: S8003 (SW2 board)

27 ENCODER SW Spec: S4001 (FUNC board)

28 PEAK LED CHECK Performs lighting check for PEAK indicator. D806, 807 (LCD board)

[A][A]

[A] Display

[A][A]

[B][B]

[B]

[B][B]

Position of S/P DIF / CASCADE switch Mode Display [B] Display [C] IC603

S/PDIF S/PD BUS OUT BUS IC609 (System control)

Position of STEREO/MONO switch Mode Display [B] Display [C] IC603

STEREO ST MONO MONO IC609 (System control)

Position of ADJUST knob Mode

Display [C] IC603

Free OFF Pressed ON IC609 (System control)

Repeats off → red light → green light → off. Spec: Lights in normal luminance and color. IC613, 614

IC609 (System control)

1-14

DMX-P01

4. Loopback Test

In the CHECK MODE: No. 28, turn the ADJUST knob to the right. (Turning to the left returns to the operational check mode.) The mode turns into the loopback test mode. The 1 kHz reference signal generated by the internal oscillator is output to all of the output connectors, including digital output. By connecting the Analog Output L or R (XLR 3-pin) to the CH 1 to 4 input connector each using an XLR 3-pin XLR 3-pin cable, the conditions for the input and output audio circuits can be checked.

During this test, the functions related to CPU operation (such as the input level control, PAN control, and MASTER volume control of each channel) do not work.

1: 0.0 2:-60.0 3:-60.0 4:-60.0

1-10. Note on LCD Replacement

Because the LCD and the diffusion plate are fixed on the board with an adhesive, replacing them at the part level is difficult. When it is required to replace the LCD or the diffusion plate, replace the LCD mounted circuit board.

1-11. Note on Battery Compartment

Frame Replacement

When replacing the frame of the battery compartment, attach the battery labels on the new frame as shown in the figure below.

The LCD indicates 0.0 dB in the loopback state under the following conditions: Conditions

LEVEL (output level select) switch: +4 dBu LINE/MIC/MIC +48V switch: LINE Input gain control: +10 dB (fully

counterclockwise)

Specification

0.0 dB ±2.0 dB

Check route

IC612 (DSP) ↔ IC508, 509 (DAC) ↔ IC201, 202, 204 (audio output circuit) ↔ OUTPUT board ↔ INPUT board ↔ IC001, 002 (head amplifier) ↔ IC612 (DSP)

If a result of a check is out of specification, the analog audio circuit is defective. Locate the defective part using an audio analyzer.

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Battery label

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DMX-P01

1-15

+ 50 hidden pages

Sony DMXP-01 Service manual

Table of Contents

Preface

Purpose of this manual

Relative manual

Manual Structure

Contents

Service Overview

1-1. Installation

1-1-1. Operating Environment

1-1-2. Specifications

1-1-3. Power Supply

1-1-4. Dimensions

1-1-5. Connecting Cables / Connectors

1-1-6. Input / Output Signals of Connectors

1-1-7. Inside Switch / Jumper Pin Setting

1-2. Locations of Main Parts

1-3. Panel Removal

1-3-2. Front Panel Removal

1-3-1. Case (Top) / Case (Bottom) Removal

1-4. Note on Servicing

1-6. Note on MAIN Board Replacement

1-7. Change of Output Level

1-8. Modification to 12V-T POWER

1-9. Check Mode

1-10. Note on LCD Replacement