Sony CDXC-90-R Service manual

CDX-C90R

SERVICE MANUAL

SPECIFICATIONS

AEP Model

UK Model

Model Name Using Similar Mechanism CDX-C780R CD Drive Mechanism Type MG-363S-121 Optical Pick-up Name KSS-520A

CD player section

System Compact disc digital audio

system

Signal-to-noise ratio 109 dB Frequency response 5 - 20,000 Hz (±1 dB) Wow and flutter Below measurable limit Laser Diode Properties

Material GaAlAs Wavelength 780 nm Emission Duration Continuous Laser output power Less than 44.6 µW*

* This output is the value measured at a distance of

200 mm from the objective lens surface on the Optical Pick-up Block.

Tuner section

Tuning range 87.5 - 108.0 MHz Antenna terminal External antenna connector Intermediate frequency 10.7 MHz Usable sensitivity 8 dBf Selectivity 75 dB at 400 kHz Signal-to-noise ratio 65 dB (stereo),

68 dB (mono)

Harmonic distortion at 1 kHz

0.3% (stereo),

0.3% (mono) Separation 35 dB at 1 kHz Frequency response 20 - 15,000 Hz

MW/LW

Tuning range MW : 531 - 1,602 kHz

LW : 153 - 281 kHz Antenna terminal External antenna connector Intermediate frequency 10.71 MHz/450 kHz Sensitivity MW: 30 dBµV

LW : 33 dBµV

General

Outputs Digital output

Line outputs (3) Power antenna relay control lead Power amplifier control lead Telephone ATT control lead Illumination control lead

Tone controls Bass ±8 dB at 100 Hz

Treble ±8 dB at 10 kHz

Power requirements 12 V DC car battery

(negative ground)

Dimensions Approx. 178 × 50 × 184 mm

(w/h/d)

Mounting dimension Approx. 182 × 53 × 163 mm

(w/h/d) Mass Approx. 1.6 kg Supplied accessories Parts for installation and

connections (1 set)

Rotary remote RM-X90 (1)

Wireless remote RM-X9R (1)

Front panel case (1)

Design and specifications are subject to change without notice.

FM/MW/LW COMPACT DISC PLAYER

MICROFILM

– 1 –

SERVICE NOTE

CAUTION

Use of controls or adjustments or performance of procedures other than those specified herein may result in hazardous radiation exposure.

Notes on Chip Component Replacement

• Never reuse a disconnected chip component.

• Notice that the minus side of a tantalum capacitor may be dam-

aged by heat.

NOTES ON HANDLING THE OPTICAL PICK-UP BLOCK OR BASE UNIT

The laser diode in the optical pick-up block may suffer electrostatic breakdown because of the potential difference generated by the charged electrostatic load, etc. on clothing and the human body. During repair, pay attention to electrostatic breakdown 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.

NOTES ON LASER DIODE EMISSION CHECK

The laser beam on this model is concentrated so as to be focused on the disc reflective surface by the objective lens in the optical pickup block. Therefore, when checking the laser diode emission, observe from more than 30 cm away from the objective lens.

NOTES ON PICK-UP FLEXIBLE BOARD

The pick-up flexible board in this set is secured to the optical pickup with an adhesive tape. Once the tape is removed, an adhering force becomes weak, and it cannot be reused. Therefore, if the optical pick-up is replaced, replace also the pickup flexible board with a new one.

NOTES ON CLEANING THE OBJECTIVE LENS

cotton swabs

optical pick-up

slide base

objective lens

2-axis actuato

2-axis cover

Apply CD lens cleaner B-4 (Part No.:J-2501-000-A) to cotton swabs (narrow type) (Part No.:J-2501-023-A) to be lightly wet. Use a force (about 5 g (0.18 oz)) to make the objective lens in contact with the bottom lightly, and clean the lens by spirals as following below. Replace the cotton swab and repeat this cleaning two or three times.

surface of objective lens

Notes:

Do not force to push the objective lens. Otherwise, the plate spring supporting the objective lens will be bent, causing a deteriorated RF waveform. Never touch anything other than the objective lens. Otherwise, a significant deterioration occurs in the RF waveform.

SAFETY-RELATED COMPONENT WARNING!!

COMPONENTS IDENTIFIED BY MARK ! OR DOTTED LINE WITH MARK ! ON THE SCHEMATIC DIAGRAMS AND IN THE PARTS LIST ARE CRITICAL TO SAFE OPERATION. REPLACE THESE COMPONENTS WITH SONY PARTS WHOSE P ART NUMBERS APPEAR AS SHOWN IN THIS MANU AL OR IN SUPPLEMENTS PUBLISHED BY SONY.

– 2 –

TABLE OF CONTENTS

1. DISASSEMBLY

1-1. Cover (Upper) .....................................................................4

1-2. Front Panel Assy ................................................................. 4

1-3. Cords ................................................................................... 5

1-4. Rear Panel ........................................................................... 5

1-5. MD Assy .............................................................................6

1-6. Audio Board ........................................................................ 6

1-7. Bracket (MD) ...................................................................... 7

1-8. Motor Block ........................................................................ 7

1-9. Base Panel Assy .................................................................. 8

1-10. Sub Panel Assy.................................................................... 8

1-11. Chassis (Front) Assy ........................................................... 9

1-12. Main Board ......................................................................... 9

1-13. Chassis (T) Sub Assy ........................................................ 10

1-14. Lever Assy ......................................................................... 10

1-15. Servo Board....................................................................... 11

1-16. Roller Assy........................................................................ 11

1-17. Chassis (OP) (O/S) Assy ................................................... 12

1-18. Optical Pick-up Block ....................................................... 12

2. ELECTRICAL ADJUSTMENTS

CD Section ............................................................................ 13

Tuner Section.........................................................................13

3. DIAGRAMS

3-1. IC Pin Descriptions ........................................................... 17

3-2. Block Diagram – CD Section –......................................... 27

3-3. Block Diagram – Main Section –...................................... 29

3-4. Block Diagram – Display Section –.................................. 31

3-5. Circuit Boards Location .................................................... 33

3-6. Printed Wiring Boards – CD Mechanism Section –.......... 33

3-7. Schematic Diagram – CD Mechanism Section (1/3) – ..... 37

3-8. Schematic Diagram – CD Mechanism Section (2/3) – ..... 39

3-9. Schematic Diagram – CD Mechanism Section (3/3) – ..... 41

3-10. Printed Wiring Board – Audio Section –........................... 43

3-11. Schematic Diagram – Audio Section (1/2) –.....................45

3-12. Schematic Diagram – Audio Section (2/2) –..................... 47

3-13. Printed Wiring Boards – Main Section – .......................... 49

3-14. Schematic Diagram – Main Section (1/4) – ...................... 53

3-15. Schematic Diagram – Main Section (2/4) – ...................... 55

3-16. Schematic Diagram – Main Section (3/4) – ...................... 57

3-17. Schematic Diagram – Main Section (4/4) – ...................... 59

3-18. Printed Wiring Board – EL Section –................................ 61

3-19. Schematic Diagram – EL Section – ..................................61

3-20. Printed Wiring Board – Sensor Section – ......................... 62

3-21. Schematic Diagram – Sensor Section – ............................ 62

4. EXPLODED VIEWS

4-1. Case Section ...................................................................... 69

4-2. Front Panel Section ........................................................... 70

4-3. Chassis Section ................................................................. 71

4-4. CD Mechanism Section (1) ............................................... 72

4-5. CD Mechanism Section (2) ............................................... 73

4-6. CD Mechanism Section (3) ............................................... 74

5. ELECTRICAL PARTS LIST.........................................75

– 3 –

SECTION 1

)

DISASSEMBLY

Note : Follow the disassembly procedure in the numerical order given.

1-1. COVER (UPPER)

claws

PTT 2.6x4

cover (upper

1-2. FRONT PANEL ASSY

front panel assy

Push the button (release).

– 4 –

1-3. CORDS

PTT 2.6x4

cord (with connector) (RCA)

(FRONT LINE OUT, REAR LINE OUT)

PTT 2.6x4

power cord

cord (with connector) (INVERTER) (EL transformer unit)

cord (with connector) (RCA)

(BUS AUDIO IN, SUB OUT)

PTT 2.6x4

1-4. REAR PANEL

PTT 2.6x4

rear panel

PTT 2.6x4

– 5 –

PTT 2.6x4

1-5. MD ASSY

Slide the base panel in the direction of the arrow.

CN101

MD assy

CN1

PTT 2.6x4

CN3

1-6. AUDIO BOARD

PTT 2.6x4

BVTT 2x

– 6 –

BVTT 2x4

AUDIO board

1-7. BRACKET (MD)

cover (MD)

PTT 2.6x4

bracket (MD)

PTT 2.6x4

1-8. MOTOR BLOCK



P 2X2.5

shaft

PTT 2.6x4

motor block

PTT 2.6x4

CN600

– 7 –

1-9. BASE PANEL ASSY

FLEXIBLE board

claws

step screw

(M1.7)

CN300

1-10. SUB PANEL ASSY

base panel assy

B 2x4

step screw (M1.7)

PTT 2.6x4

sub panel assy

– 8 –

B 2x4

1-11. CHASSIS (FRONT) ASSY

shaft (pinion) assy

bracket

(shaft pinion)

B 2.6x3

lever (L) assy

B 2.6x3

P 2x2.5

ground point screw

ground point

screws

1-12. MAIN BOARD

chassis (front) assy

MAIN board

lever (R) assy

cord (with connector) (ANT)

PTT 2.6x4

– 9 –

sheet (insulating 90)

power cord

1-13. CHASSIS (T) SUB ASSY

P 2x3

chassis (T) sub assy

1-14. LEVER ASSY

lever (R) assy

tension spring (LR)

lever (L) assy

guide (disc)

PS 2x4

DISC IN SW board

claws

– 10 –

1-15. SERVO BOARD

loading motor assy

PS 2x5

SERVO board

P 2x3

CN4

PS 2x5

heat sink

CN2

PS 2x4

CN5

1-16. ROLLER ASSY

• When installing, take note of the positions

arm (roller) and washers. (Fig. 1)

PS 2x3

LOAD SW board

washer

arm

roller assy

arm (roller)

arminsulating spacers

Fig. 1

tension spring (RA)

– 11 –

1-17. CHASSIS (OP) (O/S) ASSY

compression spring (FL)

tension spring (angle)

Turn loading ring in the

direction of the arrow.

chassis (OP) (O/S) assy

compression spring (FL)

Fit lever (D) in the

direction of the arrow.

damper (T)

1-18. OPTICAL PICK-UP BLOCK

P 2x3

sled motor assy

damper (T)

optical pick-up block

– 12 –

SECTION 2

ELECTRICAL ADJUSTMENTS

CD SECTION

CD section adjustments are done automatically in this set.

TUNER SECTION

Cautions during repair

When the tuner unit is defective, replace it by a new one because its internal block is difficult to repair.

0 dB = 1 µV

TEST MODE

This set have the test mode function. In the test mode, FM Auto Scan/Stop Level and MW Auto Scan/Stop Level adjustments can be performed easier than it in ordinary procedure.

1. Set the “OFF” mode.

2. Push the preset 4 button.

3. Push the preset 5 button.

4. Press the preset 1 button for more than two seconds.

5. Then the display indicates all lights, the test mode is set.

1. Push the OFF button.

Note on Adjustment

The adjustments of tuner section, should be performed according to the following sequence.

1. FM Auto Scan/Stop Level Adjustment

2. FM Stereo Separation Adjustment (WIDE)

3. FM Stereo Separation Adjustment (NARROW)

4. FM RDS S-Meter Adjustment

5. MW Auto Scan/Stop Level Adjustment

FM Auto Scan/Stop Level Adjustment

Setting :

SOURCE button: FM

FM RF signal generator

antenna

terminal

0.01

Carrier frequency : 98.0 MHz Output level : 22 dB (12.6 µV) Mode : mono Modulation : 1 kHz, 22.5 kHz deviation (30%)

Procedure :

1. Set to the test mode.

2. Push the SOURCE button and set to FM. Display

3. Push the preset 3 button. Display

set

4. Adjust with the volume RV2 on TU701 so that the “FM”

indication turns to “FM0” indication on the display window. But, in case of already indicated “FM0”, turn the RV2 so that put out light “0” indication and adjustment.

Display

Adjustment Location : See page 16.

– 13 –

FM Stereo Separation Adjustment (WIDE)

Setting :

SOURCE button : FM

FM Stereo Separation Adjustment (NARROW)

Setting :

SOURCE button : FM

FM RF signal generator

0.01

Carrier frequency : 98.0 MHz Output level : 70 dB (3.2 mV) Mode : stereo Modulation : main : 1 kHz, 20 kHz deviation (26.5%)

sub : 1 kHz, 20 kHz deviation (26.5%) 19 kHz pilot : 7.5 kHz deviation (10%)

antenna terminal

set

10 k

Ω

LINE OUT REAR

Procedure :

FM stereo

signal generator

output channel

Level meter Level meter

connection reading (dB)

L-CH L-CH A

R-CH L-CH Adjust RV3 on TU701

for minimum reading.

R-CH R-CH C

L-CH R-CH Adjust RV3 on TU701

for minimum reading.

L-CH stereo separation : A – B R-CH stereo separation : C – D The separations of both channels should be equal.

Specification : Separation more than 24 dB

Adjustment Location : See page 16.

level meter

FM RF signal generator

0.01

Carrier frequency : 98.0 MHz Output level : 70 dB (3.2 mV) Mode : stereo Modulation : main : 1 kHz, 20 kHz deviation (26.5%)

sub : 1 kHz, 20 kHz deviation (26.5%) 19 kHz pilot : 7.5 kHz deviation (10%)

antenna terminal

set

Ω

10 k

LINE OUT REAR

Procedure :

1. Push the SHIFT button.

2. Push the 4 button three times.

3. Push the 5 button twice and set to NARROW mode.

FM stereo

signal generator

output channel

Level meter Level meter

connection reading (dB)

L-CH L-CH A

R-CH L-CH Adjust RV4 on TU701

for minimum reading.

R-CH R-CH C

L-CH R-CH Adjust RV4 on TU701

for minimum reading.

L-CH stereo separation : A – B R-CH stereo separation : C – D The separations of both channels should be equal.

Specification : Separation more than 18 dB

level meter

Adjustment Location : See page 16.

– 14 –

AM RF signal generator

antenna terminal

AM dummy antenna (50

Ω

)

Ω

65 pF

15 pF

set

FM RDS S-Meter Adjustment

Setting :

SOURCE button: FM

FM RF signal generator

antenna

terminal

set

0.01

Carrier frequency : 98.0 MHz Output level : 35 dB (56.2 µV) Mode : mono Modulation : no modulation

Procedure :

1. Set to the test mode. (See page 13.)

2. Push the SOURCE button and set to FM. Display

3. Push the preset 10 button.

4. Adjust RV701 so that the display indication is “13.0”. Display

D EL

MW Auto Scan/Stop Level Adjustment

Setting :

SOURCE n MODE button : MW

Carrier frequency : 999 kHz 30% amplitude modulation by 1 kHz signal output level : 33 dB (44.7 µV)

Procedure :

1. Set to the test mode. (See page 13.)

2. Push the SOURCE button.

3. Push the MODE button and set to MW . Display

Specification : Display indication : 12.8 to 13.2.

Adjustment Location : See page 16.

D EL

4. Push the preset 3 button. Display

D EL

5. Adjust with the volume RV1 on TU701 so that the “MW”

indication turns to “MW0” indication on the display window. But, in case of already indicated “MW0”, turn the RV1 so that put out light “0” indication and adjustment.

Display

D EL

Adjustment Location : See page 16.

– 15 –

Adjustment Location : tuner unit (TU701)

–set upper view–

TU701

AM AUTO SCAN/

STOP LEVEL ADJ

S-METER ADJ

FM AUTO SCAN/

STOP LEVEL ADJ

FM STEREO

SEPARATION ADJ

FM STEREO

SEPARATION ADJ

RV1

RV701

FM RDS

RV2

RV3

(WIDE)

RV4

(NARROW)

– 16 –

SECTION 3

DIAGRAMS

3-1. IC PIN DESCRIPTIONS

• IC5 CXP84640-011Q (CD SYSTEM CONTROL)

Pin No. Pin Name I/O Pin Description

1 – 5 NCO — Not used in this set.

6 FP OPEN I Front panel open detection input 7 FP CLOSE O Front panel close control output 8 LINKOFF I Bus interface link input (Not used in this set.) 9 DRV OE O Focus/tracking coil/sled motor control output

10 D SW I Down switch input (SW4)

11 – 13 NCO — Not used in this set.

14 LM EJ O Loading motor control output 15 LM LOD O Loading motor control output 16 EMPH O O De-emphasis ON/OFF control output 17 CDMON O CD mechanism deck power control output 18 CD ON O CD power control output 19 A MUT O System attenuate control output 20 LD ON O Laser power ON/OFF control output 21 CD RST O CD system reset output

22 – 24 — — Not used in this set.

25 PH3 I Not used in this set. 26 TSTIN0 I Not used in this set. 27 TSTIN1 I Not used in this set. 28 TST CLV I Not used in this set. 29 NCO — Not used in this set. 30 RESET I System reset input (“L” = Reset) 31 X IN I X’tal oscillator input of system clock. (10 MHz) 32 X OUT O X’tal oscillator output of system clock. (10 MHz) 33 GND — Analog GND 34 XT OUT O Not used in this set. 35 XT IN I Not used in this set. 36 AVSS — A/D converter GND 37 AVREF I A/D converter reference voltage input 38 TEP L I Not used in this set. 39 TEP H I Not used in this set. 40 NCO — Not used in this set. 41 PH2 I Not used in this set. 42 SCLK O CD-TEXT data read clock output 43 ESPXQOK O XQOK signal output to DRAM controller. 44 ESPSDT I Serial data input from DRAM controller. 45 GRSRST O Reset signal output to DRAM controller. 46 GRSCOR I Sub-cord sync input from DRAM controller. 47 CD XLAT O CD signal process serial latch output 48 TX CLK O EEPROM serial clock output 49 TX DATA O EEPROM serial data output 50 UNISO O Not used in this set. 51 BUS CLK I/O Bus system serial clock input/output 52 BUS SI I Bus system serial interface input 53 BUS SO O Bus system serial interface output 54 F OK I Focus OK signal input 55 GFS I GFS signal detection input 56 SCOR O Sub-cord sync output 57 SENS I SENS signal input 58 — I Fixed at “H” in this set. 59 CD CKO O CD signal process serial clock output

– 17 –

Pin No. Pin Name I/O Pin Description

60 BU.IN I Back-up power detection input 61 BUSON I Bus on control input 62 IN SW I Disc in switch input (SW1) 63 SELF SW I Self switch input (SW2) 64 TX CE O EEPROM chip enable output 65 SCK2 O Sub Q read clock output 66 SI2 I Sub Q 80 bit, PCM peak and level data 16 bit input 67 CD DATA O CD signal process serial data output 68 ESPXWRE O Write signal output to DRAM controller. 69 ESPXRDE O Read signal output to DRAM controller. 70 ESPXLT O Serial data latch output to DRAM controller. 71 ESPXSOE O XSOE signal output to DRAM controller. 72 VDD — Power supply 73 HIN I Fixed at “H” in this set. 74 TEXT.ON/OFF I Fixed at “H” in this set. 75 PH1 I Not used in this set. 76 FBTBSEL I Not used in this set. 77 CDOSEL I Not used in this set.

78 – 80 — — Not used in this set.

– 18 –

• IC501 CXD2548R (DIGITAL SERVO, DIGITAL SIGNAL PROCESSOR)

Pin No. Pin Name I/O Pin Description

1 SYSM I System mute input (Not used.) 2 RMUT1 O R-ch, “0” detection output. (“H” : ON, “L” : OFF) (Not used.) 3 LMUT2 O L-ch, “0” detection output. (“H” : ON, “L” : OFF) (Not used.) 4 CKOUT O Master clock frequency division output (Not used.) 5 VDD0 — Digital power supply 6 SBSO O Serial output of sub-P to W. 7 EXCK I Clock input for SBSO read output. 8 SQCK I Clock input for SQSO read output.

9 SQSO O SubQ 80 bit, PCM peak and level data 16 bit output. 10 SENS O SENS output. Output to CPU. 11 SCLK I Clock input for SENS real data read. 12 DATA I Serial data input from CPU. 13 XLAT I Latch input from CPU. Latch serial data at the falling edge. 14 CLOK I Serial data transfer clock input from CPU. 15 XRST I System reset (“L” : Reset) 16 ACDT O Not used. 17 PWM1 I External control input of spindle motor. 18 XLON O Microcomputer extension interface (Output) (Not used.) 19 SPOA I Microcomputer extension interface (Input A) (Not used.) 20 WFCK O WFCK (Write Flame Clock) output 21 GT OP O GTOP output 22 XUGF O XUGF output (Not used.) 23 XPCK O XPLCK output (Not used.) 24 GFS O GFS output 25 RFCK O RFCK output 26 C2PO O C2PO output (Not used.) 27 XROF O XROF output 28 SCOR O “H” output at either detection, sub code sync S0 or S1. 29 MNT0 O MNT0 output (Not used.) 30 MNT1 O MNT1 output (Not used.) 31 MNT3 O MNT3 output (Not used.) 32 VSS1 — Digital GND 33 DOUT O Digital-Out output 34 ATSK I For anti-shock. 35 MIRR O Mirror signal output (Not used.) 36 DFCT O Diffect signal output (Not used.) 37 FOK O Focus OK signal output 38 VDD1 — Digital power supply 39 VPCO1 O Charge pump output for wideband EFM PLL. 40 VPCO2 O VCO2 charge pump output for wideband EFM PLL. 41 VCK.I I VCO2 oscillator input for wideband EFM PLL. 42 V16M O VCO2 oscillator output for wideband EFM PLL. 43 VCTL I VCO2 control input for wideband EFM PLL. 44 PCO O Charge pump output for master PLL. 45 FILO O Filter output for master PLL (Slave = digital PLL). 46 FILI I Filter input for master PLL. 47 AVSS4 — Analog GND 48 CLTV I VCO control voltage input for master. 49 AVDD4 — Analog power supply 50 RFAC I EFM signal input 51 BIAS I Asymmetry circuit constant current input 52 ASY.I I Asymmetry comparate voltage input

– 19 –

Pin No. Pin Name I/O Pin Description

53 ASY.O O EFM full-swing output (“L” : VSS, “H” : VDD) 54 VC I Center voltage input 55 FE I Focus error signal input 56 SE I Sled error signal input 57 TE I Tracking error signal input 58 CE I Center error signal input 59 RFDC I RF signal input 60 RFC I Condenser connection pin for LPF time constant of RF signal. 61 ADIO O OP amplifier output (Not used.) 62 AVSS3 — Analog GND 63 IGEN I Current source reference resistor connection for OP amplifier. 64 AVDD3 — Analog power supply

65, 66 TES2, 3 I TEST pin (Fixed at “L”.)

67 VSS2 — Digital GND 68 TEST I TEST pin (Fixed at “L”.) 69 SFDR O Sled drive output 70 SRDR O Sled drive output 71 TFDR O Tracking drive output 72 TRDR O Tracking drive output 73 FFDR O Focus drive output 74 FRDR O Focus drive output 75 VDD2 — Digital power supply 76 COUT O Track number count signal output (Not used.) 77 LOCK O Not used. 78 MDS O Servo control output of spindle motor. (Not used.) 79 MDP O Servo control output of spindle motor. 80 SSTP I Disc most inner track detection signal input 81 FSTO O 2/3 frequency division output of pins 103 and 104. 82 FSTI I Reference clock input for digital servo. 83 XTSL I X’tal select input (“L” : 16.9344 MHz) 84 C4M O 4.2336 MHz output 85 WDCK O D/A interface. Word clock f = 2Fs 86 VDD3 — Digital power supply 87 LRCK O D/A interface. LR clock f = Fs 88 LRCKI I LR clock input to DAC. (48 bit slot) (Not used.) 89 PCMD O D/A interface. Serial data (2’s COMP, MSB first) 90 PCMDI I Audio data input to DAC. (48 bit slot) (Not used.) 91 BCK O D/A interface. Bit clock 92 BCKI I Bit clock input to DAC. (48 bit slot) (Not used.) 93 EMPH O Not used. 94 EMPHI I De-emphasis ON/OFF of DAC. (“H” : ON, “L” : OFF) (Not used.) 95 VSS3 — Digital GND 96 A VSS1 — L-ch, Analog GND. 97 AVDD1 — L-ch, Analog power supply. 98 AOUT1 O L-ch, Analog output. (Not used.)

99 AIN1 I L-ch, OP amplifier input. (Not used.) 100 LOUT1 O L-ch, LINE output. (Not used.) 101 AVSS1 — L-ch, Analog GND. 102 XVDD — Analog power supply for master clock. 103 XTAI I X’tal oscillator input of master clock (16.9344 MHz). 104 XTAO O X’tal oscillator output of master clock. (Not used.) 105 XVSS — Analog GND for master clock. 106 AVSS2 — R-ch, Analog GND.

– 20 –

Pin No. Pin Name I/O Pin Description

107 ROUT2 O R-ch, LINE output. (Not used.) 108 AIN2 I R-ch, OP amplifier input. (Not used.) 109 AOUT2 O R-ch, Analog output. (Not used.) 110 AVDD2 — R-ch, Analog power supply. 111 A VSS2 — R-ch, Analog GND. 112 VSS0 — Digital GND

– 21 –

• IC300 MB90F574PFV-G-140-BND (SYSTEM CONTROL)

Pin No. Pin Name I/O Pin Description

1 TIR WR O TIR IC data write output 2 TIR RD O TIR IC data read output 3 TIR CE O TIR IC data chip enable output 4 TIR CE O XTIR IC data chip enable output 5 TIR BUSY I TIR IC busy input 6 TIR PDOWN O TIR IC power down output 7 DIVER O FM diversity ON/OFF output (Not used in this set.) 8 VCC — Power supply pin (+5 V)

9 AF SEEK O AF SEEK output 10 WIDE O WIDE/NARROW select output 11 CAUTION I Caution alarm setting (Fixed at “H” in this set.) 12 NOSE SW I Nose detection input 13 COLOR O Color control output (“H”:green, “L”:amber) 14 BUSON O Bus ON control output 15 BEEP O BEEP output 16 TIR RES O TIR IC reset (Power down) output 17 DF LAT O Digital filter latch output 18 DF SO O Digital filter serial data output 19 DF CKO O Digital filter clock output 20 UNISI I Serial data input (for SONY BUS) 21 UNISO O Serial data output (for SONY BUS) 22 UNICK O Serial clock output (for SONY BUS) 23 NCO — Not used. 24 SIRCS I Remote commander input 25 PLLSI I PLL data input 26 PLLSO O PLL data output 27 PLLCKO O PLL clock output 28 PLL CE O PLL chip enable output 29 P MOT+ O Front panel motor control (+) output 30 P MOT– O Front panel motor control (–) output 31 I DET I Panel motor lock detection input 32 POS0 I Position detection input 0 (Open end) 33 GND — GND 34 C — Power stabilization capacitor pin 35 POS1 I Position detection input 1 (Close end) 36 POS2 I Position detection input 2 (10 DEG.) 37 POS3 I Position detection input 3 (20 DEG.) 38 DVCC — D/A converter VREF input 39 DVSS — GND of D/A converter. 40 MOTREF O Motor reference voltage output 41 LCDANG O LCD view angle adjustment analog output 42 AVCC — Analog power supply pin (+5 V) 43 AVRH — A/D converter VREF+ input 44 AVRL — A/D converter VREF– input 45 AVSS — Analog GND 46 DSTSEL0 I Destination select input 0 (Fixed at “H” in this set.) 47 H TEMP I High templature detection analog input (Fixed at “H” in this set.) 48 L TEMP I Low templature detection analog input (Fixed at “H” in this set.) 49 MPT I Tuner multi-pass input 50 VSM I S-Meter voltage detection input 51 RC IN0 I Rotary commander input 0

52, 53 KEYIN0, 1 I Key input 0, 1

– 22 –

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