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SERVICE MANUAL

PORTABLE MINIDISC RECORDER

MZ-NH900

Ver 1.1 2004.09

SPECIFICATIONS

9-879-121-02

2004I05-1

Sony Corporation

Personal Audio Company

Published by Sony Engineering Corporation

US and foreign patents licensed from Dolby

Laboratories.

Model Name Using Similar Mechanism NEW

MD Mechanism Type MT-MZNH900-181

Optical Pick-up Name ABX-U

US Model

Canadian Model

AEP Model

UK Model

E Model

Australian Model

Chinese Model

Tourist Model

• SonicStage and SonicStage logo are trademarks or registered trademarks of Sony Corporation.

• MD Simple Burner, OpenMG, “Magic Gate”, “MagicGate Memory Stick”, “Memory Stick”,

Hi-MD, Net MD, ATRAC, ATRAC3, ATRAC3plus and their logos are trademarks of

Sony Corporation.

• Microsoft, Windows, Windows NT and Windows Media are trademarks or registered

trademarks of Microsoft Corporation in the United States and /or other countries.

• IBM and PC/AT are registered trademarks of International Business Machines Corporation.

• Macintosh is a trademark of Apple Computer, Inc. in the United States and/or other countries.

• MMX and Pentium are trademarks or registered trademarks of Intel Corporation.

• All other trademarks and registered trademarks are trademarks or registered trademarks of their

respective holders.

Inputs

MIC: stereo mini-jack

(minimum input level 0.13 mV)

Line in:

stereo mini-jack for analog input

(minimum input level 49 mV)

optical (digital) mini-jack for optical

(digital) input

Outputs

i/LINE OUT

: stereo mini-jack (dedicated

remote control jack)/194 mV (10 kΩ)

Maximum output (DC)

Headphones:

3 mW + 3 mW (16 Ω) (European models)

5 mW + 5 mW (16 Ω) (Other models)

Power requirements

Sony AC Power Adaptor connected at the DC

IN 3V jack:

120 V AC, 60 Hz (Models for USA, Canada,

Mexico and Taiwan)

240 V AC, 50 Hz (Model for Australia)

220 V AC, 50 Hz (Models for China and

Argentine)

100 - 240 V AC, 50/60 Hz (Other models)

The recorder:

Nickel metal hydride rechargeable battery

NH-10WM 1.2V 900 mAh (MIN) Ni-MH

LR6 (size AA) alkaline battery

Battery charging stand:

AC power adaptor DC 3V

Operating temperature

+5° C (+41°F) to +35° C (+95°F)

Dimensions

Approx. 81.3 × 77.8 × 21.2 mm (w/h/d)

× 3

in.) (excluding projecting

parts and controls)

Mass

Approx. 110 g (3.9 oz) (the recorder only)

Approx. 133 g (4.7 oz) (including the

Supplied accessories

AC power adaptor (1)

Battery charging stand (1)

Remote control (1)

Headphones (for USA model) (1)

Earphones (except USA model) (1)

Dedicated USB cable (1)

NH-10WM Nickel metal hydride rechargeable

battery (1)

Dry battery case (1)

Battery carrying case (1)

Clamp filter (2)

CD-ROM (SonicStage/MD Simple Burner) (1)*

Optical cable (1)

Carrying pouch (except USA model) (1)

*Do not play a CD-ROM on an audio CD

player.

rechargeable battery)

The LINE IN (OPT) jack is used to connect

either a digital (optical) cable or a line

(analog) cable.

The i/LINE OUT jack connects either

headphones/earphones or a line cable.

Measured in accordance with JEITA.

Design and specifications are subject to change

without notice.

Audio playing system

MiniDisc digital audio system

Laser diode properties

Material: GaAlAs

Wavelength: λ = 790 nm

Emission duration: continuous

Laser output: less than 44.6 µW

(This output is the value measured at a distance

of 200 mm from the lens surface on the optical

pick-up block with 7 mm aperture.)

Recording and playback time

When using HMD1G (1GB disc):

Maximum 34 hours in Hi-LP stereo

When using MDW-80 in Hi-MD mode:

Maximum 10 hours and 10 min. in Hi-LP

stereo

When using MDW-80 in MD mode:

Maximum 160 min. in monaural

Maximum 320 min. in LP4 stereo

Revolutions

350 rpm to 3,000 rpm (CLV)

Error correction

Hi-MD:

LDC (Long Distance Code)/BIS (Burst

Indicator Subcode)

MD:

ACIRC (Advanced Cross Interleave Reed

Solomon Code)

Sampling frequency

44.1 kHz

Sampling rate converter

Input: 32 kHz/44.1 kHz/48 kHz

Coding

Hi-MD:

AT RAC 3plus (Adaptive TRansform

Acoustic Coding 3 plus)

MD:

AT RAC

AT RAC3 — LP2/LP4

Modulation system

Hi-MD:

1-7RLL (Run Length Limited)/PRML

(Partial Response Maximum Likelihood)

MD:

EFM (Eight to Fourteen Modulation)

Frequency response

20 to 20,000 Hz ± 3 dB

For other Service and User Manuals, go to www.ManualDepot.com

Summary of content (62 pages)

PAGE 1
MZ-NH900 SERVICE MANUAL US Model Canadian Model AEP Model UK Model E Model Australian Model Chinese Model Tourist Model Ver 1.1 2004.09 US and foreign patents licensed from Dolby Laboratories. • SonicStage and SonicStage logo are trademarks or registered trademarks of Sony Corporation.
PAGE 2
MZ-NH900 Battery life When recording continuously in Hi-MD mode (Unit: approx.hours)(JEITA1)) Disc type Batteries Linear PCM Hi-SP Hi-LP 1GB Hi-MD disc NH-10WM2) 3.5 5 6 LR63) 2.5 3.5 4 NH-10WM + LR6 6 8.5 10 NH-10WM 3.5 5 6 LR6 4.5 7 8 NH-10WM + LR6 8 12 14 60/74/80-minute standard disc 1) Measured in accordance with the JEITA (Japan Electronics and Information Technology Industries Association) standard.
PAGE 3
MZ-NH900 TABLE OF CONTENTS 1. SERVICING NOTES ................................................ 4 2. GENERAL ................................................................... 5 3. DISASSEMBLY 3-1. 3-2. 3-3. 3-4. 3-5. 3-6. 3-7. 3-8. 3-9. Disassembly Flow ........................................................... Case (Lower) Block ......................................................... MAIN Board .................................................................... Upper Panel Block ..............
PAGE 4
MZ-NH900 SECTION 1 SERVICING NOTES NOTES ON HANDLING THE OPTICAL PICK-UP BLOCK OR BASE UNIT The laser diode in the optical pick-up block may suffer electrostatic break-down because of the potential difference generated by the charged electrostatic load, etc. on clothing and the human body. During repair, pay attention to electrostatic break-down and also use the procedure in the printed matter which is included in the repair parts. The flexible board is easily damaged and should be handled with care.
PAGE 5
MZ-NH900 SECTION 2 GENERAL This section is extracted from instruction manual. Looking at controls The recorder 1 q; qa 2 qs qd 3 qg qf 4 qh 5 8 qj 6 qk 7 ql 9 A •NAVI/ MENU button Press lightly to go to the NAVI (navigation) setting mode. Press for 2 seconds or more to go to MENU setting mode. B Battery compartment C Jog dial Operation Press NENT 1) play, enter Press towards .
PAGE 6
MZ-NH900 The headphones/earphones with a remote control A F B G C H D I F Clip See “Using the clip for the remote control”. G HOLD switch To prevent the buttons from being accidentally operated when you carry the recorder, use this function. H DISPLAY button I P-MODE/ button J SOUND button J E A Volume Control (VOL +, –) Turn to adjust the volume. B x (stop) button C Jog lever (NX/ENT, .
PAGE 7
MZ-NH900 SECTION 3 DISASSEMBLY • This set can be disassembled in the order shown below. 3-1. DISASSEMBLY FLOW Note 1: The process described in can be performed in any order. Note 2: Without completing the process described in , the next process can not be performed. SET 3-2. CASE (LOWER) BLOCK (Page 8) 3-3. MAIN BOARD (Page 8) 3-4. UPPER PANEL BLOCK (Page 9) 3-5. MECHANISM DECK (MT-MZNH900-181) (Page 9) 3-7. GEAR (BSA), GEAR (SB) (Page 10) 3-6. BATTERY CASE BLOCK (Page 10) 3-8.
PAGE 8
MZ-NH900 Note: Follow the disassembly procedure in the numerical order given. 3-2. CASE (LOWER) BLOCK 6 case (lower) block 4 two screws (M1.4) 5 two screws (M1.4) 3 screw (M1.4) 2 battery lid 1 Open the battery lid in the direction of arrow. 3-3. MAIN BOARD 5 flexible board (CN471) 8 1 Remove two solders. 0 MAIN board 2 flexible board 4 flexible board (CN701) 6 two toothed lock screws (M1.4) 8 9 flexible board (CN501) 7 three toothed lock screws (M1.4) 3 Remove the solder.
PAGE 9
MZ-NH900 3-4. UPPER PANEL BLOCK 5 upper panel block 4 two screws (M1.4) 3 two screws (M1.4) 1 flexible board (CN471) B A 2 Slide the open slider in the direction of arrow A, and open the upper panel sub assy in the direction of arrow B. 3-5.
PAGE 10
MZ-NH900 3-6. BATTERY CASE BLOCK 2 MD standard pin 3 two screws (1.7 × 2.5) 1 claw 7 battery case block 5 tension spring (lock) 6 open slider 4 screw (M1.4) 3-7. GEAR (BSA), GEAR (SB) 1 self tap screw 2 thrust retainer spring 3 washer (0.8-2.
PAGE 11
MZ-NH900 3-8. OP SERVICE ASSY 1 Lead screw block assy is turned and it removes from OP service assy. 2 OP service assy 3-9. DC MOTOR SSM18D/C-NP (SPINDLE) (M701), DC MOTOR (SLED) (M702), DC MOTOR UNIT (OVER WRITE HEAD UP/DOWN) (M703) 3 two screws (M1.4) 2 Remove two solders of flexible board. 4 DC motor (sled) (M702) 1 Remove four solders of flexible board.
PAGE 12
MZ-NH900 3-10. HOLDER ASSY 4 Remove the holder assy to the direction of the arrow A. 2 boss 3 Open the holder assy. 1 boss A 3-11. POSITION OF FERRITE CORE -REMOTE COMMANDER- A cable is rolled once. clamp filter (ferrite core) (Part No. 1-543-793-41) 20mm A cable is rolled once. -AC ADAPTOR- A cable is rolled twice. 20mm 20mm 20mm clamp filter (ferrite core) (Part No. 1-543-793-41) clamp filter (ferrite core) (Part No. 1-543-793-41) clamp filter (ferrite core) (Part No.
PAGE 13
MZ-NH900 SECTION 4 TEST MODE OUTLINE A key having no particular description in the text, indicates a set key. 1. ENTERING THE TEST MODE Preparation: Copy the “TestMode_Enter_For_900_800_700_600_600D_ Ver***.exe” folder of the PC application of the latest version to your PC in advance. (operating system: Windows 2000, Windows XP) Also, when using this application, the SonicStage Ver. 2.0 or 2.1 is necessary, and install it in your PC in advance. 2.
PAGE 14
MZ-NH900 4. CONFIGURATION OF THE TEST MODE 5. MANUAL MODE This is mode to adjust or check the operation of the set by function. Flow of the test mode: Display Check Mode 003 Ver *.*** Version display → All lit → All off → Version display... Operation of The Manual Mode 1. Enter the test mode (Display Check mode). 2. Press the [VOL+] key to activate the Manual mode where the LCD displays as shown below.
PAGE 15
MZ-NH900 6. OVERALL ADJUSTMENT MODE 6-1. Operation of The Overall Adjustment Mode 1. Enter the test mode (Display Check mode). 2. Press the [VOL--] key to activate the Overall Adjustment mode where the LCD displays as shown below. Display 0 AdjF** Disc mark: Lit the inner segments: Completed the power supply adjustment. Lit the outer segments: Completed the charge function check. “**”: If “DF” or “FF” is displayed, it mean that completed the servo overall adjustment. 3.
PAGE 16
MZ-NH900 Flow of Self-diagnosis Result Display mode operation: *** 1 #### [VOL +] key The first error [VOL --] key The last error One error before the last [VOL --] key *** N2#### [VOL +] key 11* $$$$$$ ## [VOL --] key *** N1#### [VOL +] key Operation of The Key Check Mode 1. Enter the test mode (Display Check mode). 2. Press the [GROUP] key to activate the Key Check mode where the LCD displays as shown below. Display *** N #### [VOL +] key 8. KEY CHECK MODE This mode is used for key check.
PAGE 17
MZ-NH900 Ver 1.1 SECTION 5 ELECTRICAL ADJUSTMENTS 1. PRECAUTIONS FOR ADJUSTMENT 1. Adjustment must be done in the test mode only. After adjusting, release the test mode. A key having no particular description in the text, indicates a set key. 2. Use the following tools and measuring instruments. • Digital voltmeter • Regulated dc power supply (two sets) • Thermometer (using the Temperature Correction) • Laser power meter • CD adjustment disc TDYS-1 (Part No.
PAGE 18
MZ-NH900 3-4-2. PwrAdj adjustments Repeat the following procedures and adjust all contents of “table 34-1. PwrAdj Specifications”. ItemNo. 2211 2212 2213 2214 2215 2216 2217 2218 2219 2221 2222 2223 2224 2225 2226 2227 2228 2229 2231 2232 2233 Example Display (Item No. 2211) 211 AD ** adjustment value (hexadecimal) Procedure: 1. Connect the digital voltmeter to measuring point (refer to the following table) and ground (CL433). 2. Press the > key to change the item number. 3.
PAGE 19
MZ-NH900 3-4-3. VBsAdj adjustments Procedure: 1. In the “3-4-2. PwrAdj Adjustments” completed status, press the > key to display as follows. Display 240 VBsAdj 3-5. Charge Function Check Note: When perform this check, don’t apply a voltage to battery terminals. Procedure: 1. Connect the digital voltmeter to CL431 (BATT+) and CL433 (GND). 2. Enter the test mode using the AC adapter. 3. Press the [VOL+] key to enter the Manual mode. 4. Press the [VOL+] key twice to display as follows. Display 2.
PAGE 20
MZ-NH900 3-6. Laser Power Check Procedure: 1. In the test mode (Display Check mode), press the [VOL+] key to enter the Manual mode. 2. Open the lid and press the . key continuously until the optical pick-up moves to the most inward track. 3. Set the laser power meter so that the laser beam from the optical pick-up aims at the objective lens of laser power meter at right angle. 4. Press the [VOL--] key once to display as follows. Display 9 DESIGN Example of Calculation: Item No.
PAGE 21
MZ-NH900 3-8. Servo Overall Adjustment Note1: Be sure to adjustment so that the set is horizontal and the LCD is upside. Unless performed in that state, it is not adjusted correctly. Note2: If NG is displayed in the middle of this adjustments, perform “3-2. Initialize The Adjustment Value” and “3-7. Setting The Adjustment Values” again, then retry this adjustments from step 1. Procedure: 1.
PAGE 22
MZ-NH900 MEMO 22
PAGE 23
MZ-NH900 SECTION 6 DIAGRAMS 6-1.
PAGE 24
MZ-NH900 6-2.
PAGE 25
MZ-NH900 6-3. BLOCK DIAGRAM – POWER SUPPLY Section – F SDO0 SCK0 SDO0 SCK0 58 DATA 60 SCK (Page 24) B 64 59 34 17 XRST2 (Page 24) OR GATE IC605 VC B+ 91 DVDD_OUT REG4 B+ +1.
PAGE 26
MZ-NH900 • Note For Printed Wiring Boards and Schematic Diagrams Note on Printed Wiring Board: • X : parts extracted from the component side. • Y : parts extracted from the conductor side. • f : internal component. • : Pattern from the side which enables seeing. (The other layers' patterns are not indicated.) Caution: Pattern face side: (Conductor Side) Parts face side: (Component Side) Parts on the pattern face side seen from the pattern face are indicated.
PAGE 27
MZ-NH900 6-4. SCHEMATIC DIAGRAM – MAIN Section (1/9) – • See page 38 for IC Block Diagrams. TRK+ TRK- ZI2 (1/9) XRST_MTR_DRV XRST_MTR_DRV SLD_CON_W C714 0.1 SLD_CON_W SLD_CON_V SLD_CON_V SLD_CON_U SLD_CON_U L701 0 SLD_PWM L702 0 SLD_PWM SLD_MON_U SLD_MON_U SLD_MON_V SLD_MON_V SLD_MON_W SLD_MON_W SLD_CON_W TF1 TF1 TR1 TR1 R706 2.2k ZI2 R707 2.2k ZI1 R708 2.
PAGE 28
MZ-NH900 • See page 38 for IC Block Diagrams. 6-5. SCHEMATIC DIAGRAM – MAIN Section (2/9) – (2/9) SUSPEND XCS_REC_DRV C673 0.1 SUSPEND REG_DACVREFH USB_HOLD IC606 XC61CN1702NR VBUS_DET 4FS SCK0 SDO0 EFM HBB RECP EFM_CLK VOLTAGE DETECT HAB HA REG_F C669 1 HB USB_HOLD C668 1 RECP RECP D609 MA2Z748001S0 EFM_CLK EFM_CLK EFM C643 2.2 EFM XCS_REC_DRV XCS_REC_DRV +1.
PAGE 29
MZ-NH900 6-6. SCHEMATIC DIAGRAM – MAIN Section (3/9) – • See page 26 for Waveforms. • See page 38 for IC Block Diagrams. B3 B2 B1 (Page 27) (3/9) C3 VOUT VDD C528 0.1 C530 1 C554 0.1 C2 (Page 28) SSB_CLK SSB_DATA XRST_RF VREF FE C524 0.01 ABCD TE IC502 R1180Q301B R525 0 +3V REGULATOR C561 1 R526 0 C1 C523 0.1 C553 4.7 6.3V S0 R505 10 S0 S1 L503 10µH S1 XLDON C519 0.1 XLDON PLSE_XDC GND PLSE_XDC LC_DRV1 C536 0.
PAGE 30
MZ-NH900 • See page 38 for IC Block Diagrams. 6-7. SCHEMATIC DIAGRAM – MAIN Section (4/9) – (4/9) UDP UDP UDM UDM UDP UDM (Page 34) D1 D2 Q451 RTQ035P02TR TERRA_V (Page 28) MINUS_MON S GND_SW C453 0.047 VBUS_MON CHG_I_CTL2 SIZE"AA" R467 10k (IEC DESIGNATION R6) R463 220 R464 100k 1PC. 1.5V -2 CHG_I_CTL3 VOLTAGE LIMITER DRY BATTERY -1 CHG_TYPE2 (BATTERY CASE) CHG_MON Q451,452 Q407 UN9214J-(TX).
PAGE 31
MZ-NH900 6-8. SCHEMATIC DIAGRAM – MAIN Section (5/9) – • See page 38 for IC Block Diagrams. E13 E11 E9 E10 E8 E6 E7 E4 E5 E3 E1 E2 (Page 28) (5/9) I1 I2 J1 (Page 29) J2 C922 100 6.3V C958 1 C923 47 6.3V WK_DET RMC_KEY C927 100p C926 1000p C915 10 6.3V C9001 0.01 HALF_LOCK REC_KEY XRST2 J4 L903 10µH C928 100p C929 1000p R968 470k R969 2.
PAGE 32
MZ-NH900 6-9. SCHEMATIC DIAGRAM – MAIN Section (6/9) – • See page 38 for IC Block Diagrams. F2 F1 (Page 28) (6/9) H1 (Page 30) J1 J2 Q1 J4 (Page 34) R360 0 R361 10 D_VREG0 D_VREG0 D_VCONT_PWM D_VCONT_PWM DCLSOUTR DCLSOUTR Q904 SI1410EDH-T1 DCLSOUTL DCLSOUTL BEEP BEEP D_ENVG D_ENVG S D_ENREG D_ENREG C364 2.2 D_EN2 R923 2.2M D_EN2 D_EN1 (Page 34) D_EN1 FS512 C361 47 6.
PAGE 33
MZ-NH900 6-10. SCHEMATIC DIAGRAM – MAIN Section (7/9) – • See page 38 for IC Block Diagrams. REG5_REG REG5_VSTB (7/9) K1 R478 4.7k R476 4.7k R477 4.7k K2 CN471 16P K3 R486 0 DVDD R471 0 JOG_B R472 0 JOG_A XRST2 K4 JOG_B JOG_A SET_KEY_2 SET_KEY_2 SET_KEY_1 SET_KEY_1 R473 0 REC_KEY T_MARK XCS_LCD CS D471 MA2Z748001S0 R489 100 SDI1 R490 100 SDO1 +2.
PAGE 34
MZ-NH900 6-11. SCHEMATIC DIAGRAM – MAIN Section (8/9) – • See page 26 for Waveforms. • See page 42 for IC Pin Function Description. (8/9) K1 C861 0.1 K2 K3 K4 POEN_CLOSE_SW XOPT_CTL ADDT R843 2.
PAGE 35
MZ-NH900 6-12. SCHEMATIC DIAGRAM – MAIN Section (9/9) – • See page 26 for Waveforms. • See page 38 for IC Block Diagrams. (9/9) D302 MAZS068008SO +1.2V REGULATOR R308 0 IC302 XC6219B212MR C328 1 C320 2.2 6.3V C323 10 6.3V SCK0 OPT_DET OPT_DET DIN1 C322 C324 0.1 XJACK_DET XJACK_DET ADDT R301 1k XOPT_CTL C319 0.1 C321 47 6.3V SCK0 NC CE L303 10µH R314 0 VSS SDO0 0.1 VIN SDO0 Q301 2SA2018TL B+ SWITCH R304 100k VOUT C327 1 C202 1 R201 47k C102 1 R101 47k R306 10k C303 0.
PAGE 36
MZ-NH900 6-13.
PAGE 37
MZ-NH900 6-14. PRINTED WIRING BOARD – MAIN Section (2/2) – 1 2 3 : Uses unleaded solder. 4 5 6 7 8 9 10 • Semiconductor Location 11 Ref. No.
PAGE 38
MZ-NH900 • IC Block Diagrams IC351 CXD9811K OUT2 21 20 19 18 17 16 15 CHARGE PUMP BEEP AMP MICR 22 14 PDN MVDD 23 VDD 24 AUDIO INTERFACE CONTROLLER LEVEL SHIFTER LEVEL SHIFTER LEVEL SHIFTER BEEP AMP 2 3 4 5 MODEB 1 VCOM AVDD AVSS 5 6 13 12 11 10 9 CFB VREF VCONT VREG VREGO 8 VDDO1 6 7 7 SDTO 4 DVDD 3 DVSS 2 RIN VCOM 1 REGULATOR LINE AMP (P-N) 25 26 27 28 OUT1 EN1 EN2 ENREG ENVG LIN 28 A/D CONVERTER PRE DRIVER OBEEP1 10 LRCK 9 MCLK 8 BCLK HEADPHONE AMP (N
PAGE 39
MZ-NH900 OUTA VG OUTB VRECIN VRECIN PGND2 HA HB PGND4 CL VCP VG2 GND CH HAB HBB GND RECP VG3 PGND4 VBUSSEL2 EFM CLK EFM VIF CLK DATA SCK NC M12 IC601 SC901585VAR2 84 83 82 81 80 79 78 77 76 75 74 73 72 71 70 69 68 67 66 65 64 63 62 61 60 59 58 57 CHARGE PUMP VG VG3 VIF NC A12 85 56 LATCH EFM BOTTOM PRE DRIVER HOLD OUT 86 RST OUT 87 BUFFER LVDT 55 XWKO WAKE CONTROL HOLD LOGIC VBUS EFM TOP PRE DRIVER PVBUS 53 WAKEC PVBUS 88 VBUS CRST 89 52 V33UO 51 VBUS DE
PAGE 40
MZ-NH900 IC602 R1160N121B-TR-FA REGULATOR VDD 1 GND 2 5 VOUT 4 ECO CURRENT LIMIT CE 3 VI1 UI1 PWM1 CPUO1 CPVO1 CPWO1 VG VCC GND STALL CPWO2 CPVO2 CPUO2 PWM2 UI2 VI2 IC701 BD6607KN 64 63 62 61 60 59 58 57 56 55 54 53 52 51 50 49 48 WI2 WI1 1 VG DECODER STANDBY DECODER VG VG PRE DRIVE PRE DRIVE PGNDW1 2 47 PGNDW2 WO1 3 46 WO2 ST1 4 45 ST2 VMVW1 5 44 VMVW2 43 VO2 42 VO2 VO1 6 VO1 7 PGNDUV1 8 41 PGNDUV2 40 UO2 39 UO2 UO1 9 UO1 10 VMU1 11 38 VMU2 VG VG VMR1 12
PAGE 41
MZ-NH900 IC891 AK6514CF-E2 IC902 XC62HR5502MR NC 1 VIN 2 HIGH VOLTAGE GENERATOR 8 VCC Y DECODER MEMORY ARRAY Y SELECT & SENSE AMP VSS 4 ADDRESS GENERATOR X DECODER XCS 1 SDO 2 XWP 3 5 VOUT CURRENT LIMIT + – 7 XHOLD CONTROL LOGIC OUTPUT CONTROL CE 3 REFERENCE VOLTAGE 4 VSS 6 SCL SERIAL-PARALLEL CONVERTER 5 SDI REGI3 REGO3 REGC3 MUTEON DW 2B DW 2T VC2 VCIN VCO2 VO2 L2 L2 PGND2 PGND2 XRST2 CRST2 IC901 SC901584EPR2 48 47 46 45 44 43 42 41 40 39 38 37 36 35 34 33 RESE
PAGE 42
MZ-NH900 • IC Pin Function Description IC801 CXD2681-223GG (SYSTEM CONTROLLER, DIGITAL SIGNAL PROCESSOR) Pin No.
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MZ-NH900 Pin No.
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MZ-NH900 Pin No.
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MZ-NH900 Pin No.
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MZ-NH900 Pin No.
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MZ-NH900 Pin No.
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MZ-NH900 Pin No.
PAGE 49
MZ-NH900 SECTION 7 EXPLODED VIEWS NOTE: • -XX and -X mean standardized parts, so they may have some difference from the original one. • Color Indication of Appearance Parts Example: KNOB, BALANCE (WHITE) . . . (RED) ↑ ↑ Parts Color Cabinet's Color 7-1. • Items marked “*” are not stocked since they are seldom required for routine service. Some delay should be anticipated when ordering these items. • The mechanical parts with no reference number in the exploded views are not supplied.
PAGE 50
MZ-NH900 7-2. UPPER PANEL SECTION 52 not supplied 53 51 54 55 56 57 58 61 59 Ref. No. 60 Part No. Description 51 51 52 53 54 X-2023-708-1 X-2023-709-1 3-237-092-01 3-264-154-01 3-266-488-01 PANEL (S) SUB ASSY, UPPER (SILVER) PANEL (B) SUB ASSY, UPPER (BLACK) KNOB (HOLD) BADGE (HI-MD) SPRING (REC), COMPRESSION 55 55 3-266-485-01 BUTTON (T-MARK) (for SILVER) 3-266-485-11 BUTTON (T-MARK) (for BLACK) 50 Remark Ref. No. 56 57 Part No.
PAGE 51
MZ-NH900 7-3. CHASSIS SECTION 110 mechanism deck section 107 108 109 106 111 113 114 105 112 104 119 119 116 115 103 102 117 101 118 Ref. No. Part No. Description 101 102 103 104 105 3-266-499-01 3-245-889-01 3-266-534-01 3-266-506-01 X-3385-106-1 OPEN SLIDER SPRING (LIMITTER), COMPRESSION SPRING (LOCK), TENSION CASE, BATTERY CHASSIS ASSY, SET 106 107 108 109 110 3-318-382-91 3-266-502-01 3-266-500-01 3-266-501-01 3-246-996-01 SCREW (1.7X2.
PAGE 52
MZ-NH900 7-4. MECHANISM DECK SECTION (MT-MZNH900-181) 159 158 161 not supplied HR601 (over write head) 157 154 M702 160 162 156 154 M703 M701 153 163 (including HR601 (over write head) ) 155 153 152 153 151 The components identified by mark 0 or dotted line with mark 0 are critical for safety. Replace only with part number specified. Ref. No. Part No. Description 151 152 153 154 155 3-338-645-31 3-263-454-01 3-248-370-01 3-225-996-17 3-244-880-01 WASHER (0.8-2.
PAGE 53
MZ-NH900 SECTION 8 ELECTRICAL PARTS LIST MAIN NOTE: • Items marked “*” are not stocked since they • Due to standardization, replacements in the are seldom required for routine service. parts list may be different from the parts Some delay should be anticipated when specified in the diagrams or the components ordering these items. used on the set. • SEMICONDUCTORS • -XX and -X mean standardized parts, so they In each case, u: µ, for example: may have some difference from the original uA... : µA... uPA...
PAGE 54
MZ-NH900 MAIN Ref. No. Part No. Description Remark C429 C434 C435 C436 C437 1-125-777-11 1-125-777-11 1-125-777-11 1-125-777-11 1-125-777-11 CERAMIC CHIP CERAMIC CHIP CERAMIC CHIP CERAMIC CHIP CERAMIC CHIP 0.1uF 0.1uF 0.1uF 0.1uF 0.1uF 10% 10% 10% 10% 10% 10V 10V 10V 10V 10V C438 C452 C453 C455 C456 1-125-777-11 1-107-826-11 1-165-176-11 1-164-939-11 1-164-939-11 CERAMIC CHIP CERAMIC CHIP CERAMIC CHIP CERAMIC CHIP CERAMIC CHIP 0.1uF 0.1uF 0.047uF 0.0022uF 0.
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MZ-NH900 MAIN Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark C895 C901 C902 1-125-777-11 CERAMIC CHIP 1-125-777-11 CERAMIC CHIP 1-125-777-11 CERAMIC CHIP 0.1uF 0.1uF 0.1uF 10% 10% 10% 10V 10V 10V C903 C906 C908 C909 C915 1-164-943-11 1-100-352-11 1-164-943-11 1-119-751-11 1-100-442-11 CERAMIC CHIP CERAMIC CHIP CERAMIC CHIP TANTALUM CHIP TANTALUM CHIP 0.01uF 1uF 0.01uF 22uF 10uF 10% 20% 10% 20% 20% 16V 16V 16V 16V 6.
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MZ-NH900 MAIN Ref. No. Part No.
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MZ-NH900 MAIN Ref. No. Part No.
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MZ-NH900 MAIN Ref. No. Part No. Description R414 R415 R417 R418 R419 1-218-965-11 1-218-961-11 1-218-989-11 1-218-977-11 1-218-965-11 RES-CHIP RES-CHIP RES-CHIP RES-CHIP RES-CHIP 10K 4.7K 1M 100K 10K 5% 5% 5% 5% 5% 1/16W 1/16W 1/16W 1/16W 1/16W R420 R421 R422 R423 R424 1-218-961-11 1-218-977-11 1-218-989-11 1-218-981-11 1-218-985-11 RES-CHIP RES-CHIP RES-CHIP RES-CHIP RES-CHIP 4.
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MZ-NH900 MAIN Ref. No. Part No. Description R670 R671 R673 R675 R677 1-218-990-11 1-218-990-11 1-218-990-11 1-220-804-11 1-216-864-11 SHORT CHIP SHORT CHIP SHORT CHIP RES-CHIP SHORT CHIP 0 0 0 2.
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MZ-NH900 MAIN Ref. No. Part No. Description R935 R936 R937 R938 R939 1-208-935-11 1-208-927-11 1-208-715-11 1-208-927-11 1-218-977-11 METAL CHIP METAL CHIP METAL CHIP METAL CHIP RES-CHIP 100K 47K 22K 47K 100K 0.5% 0.5% 0.5% 0.5% 5% Remark 1/16W 1/16W 1/16W 1/16W 1/16W R940 R950 R957 R960 R961 1-218-981-11 1-218-941-11 1-208-943-11 1-218-990-11 1-220-803-81 RES-CHIP RES-CHIP METAL CHIP SHORT CHIP RES-CHIP 220K 100 220K 0 4.7 5% 5% 0.
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MZ-NH900 Ref. No. Part No.
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MZ-NH900 REVISION HISTORY Clicking the version allows you to jump to the revised page. Also, clicking the version at the upper right on the revised page allows you to jump to the next revised page. 2 Ver. Date Description of Revision 1.0 2004.08 New 1.1 2004.09 Change of Part No.