STR-DA90ESG SERVICE MANUAL US Model Canadian Model Australian Model Manufactured under license from Dolby Laboratories Licensing Corporation. “Dolby,” the double-D symbol a, “AC-3” and “Pro Logic” are trademarks of Dolby Labo- ratories Licensing Corporation. SPECIFICATIONS Audio power specificaitons Dynamic power 165 W + 165 W, 8 ohms Input (DIGITAL) output (US,...
Page 2
Digital Signal Processor section FM tuner section Video section Tuning range 87.5 - 108.0 MHz Inputs VIDEO: Modulation High Density Linear 1 Vp-p 75 ohms (A/D conversion) Converter Antenna 75 ohms, unbalanced S-VIDEO: terminals Y: 1 Vp-p 75 ohms Demodulation High Density Linear C: 0.286 Vp-p 75 ohms (D/A conversion)
LES DIAGRAMMES SCHÉMATIQUES ET LA LISTE DES PIÈCES SONT CRITIQUES POUR LA SÉCURITÉ DE FONCTIONNEMENT. NE REMPLACER CES COM- POSANTS QUE PAR DES PIÈCES SONY DONT LES NUMÉROS SONT DONNÉS DANS CE MANUEL OU DANS LES SUPPLÉMENTS PUBLIÉS PAR SONY.
SECTION 2 DISASSEMBLY Note: Follow the disassembly procedure in the numerical order given. CASE 1 three screws (M 3 1 three screws (M 3 1 two screws (M 3 3 case 1 two screws (M 3 REAR PANEL SECTION 3 two screws 2 screw (BVTP 3 4 back panel section...
Page 6
TUNER/AUDIO/SPTM BOARD, FRONT PANEL SECTION 1 five connectors 1 connector 1 connector CND621, CNE601, 602, (CNS210) CNV615, 616 (CNE211) 8 front panel section 7 four screws (BVTP 3 2 SPTM board 1 connector (CNS623) 3 AUDIO board 7 three screws (BVTP 3 4 flat wire (CNS3503)
SECTION 3 ELECTRICAL ADJUSTMENTS INITIALIZATION OF THE MICROCOMPUTER ON SCREEN SECTION KEEP the DISPLAY , OPEN/CLOSE buttons depressed simul- taneously and then turn the POWER switch ON. OSD ADJUSTMENT Setting: Adjustment Location: VIDEO board (Component side) Monitor TV VIDEO output terminal CT802 S.
Page 8
AMPLIFIRE SECTION DC BIAS CURRENT Adjustment (with no signal input) Note: 1. DC BIAS CURRENT adjustments should be made 30 seconds after the [POWER] switch is turned on (POWER ON). 2. After replacing the power transistors, DC BIAS CURRENT adjustments should be perfomed.
SECTION 4 DIAGRAMS 4-1. IC PIN FUNCTION DESCRIPTION DISPLAY BOARD IC105 MB90673PF-G-206-BND (FLUORESCENT INDICATOR TUBE DRIVE CONTROLLER, KEY CONTROL) Pin No. Pin Name Function MBUS (VZ) Not used (fixed at “L”) MBUS (MON) Not used (fixed at “L”) MBUS (STU) Not used (open) LED-V3 LED drive signal output terminal “H”: LED on (for function VIDEO 3 indicator)
Page 10
Pin No. Pin Name Function MODE1 Mode selection terminal (fixed at “H”) MODE2 Mode selection terminal (fixed at “L”) STANDBY Hardware standby signal input terminal (fixed at “H”) STOP Stop signal input terminal U-RESET System reset signal input from the master controller (IC3413) “L”: reset U-SREQ Communication request signal output to the master controller (IC3413) U-MREQ...
Page 11
S VIDEO BOARD IC809 MB90T673PF-G-BND (ON SCREEN DISPLAY CONTROLLER) Pin No. Pin Name Function AD14 Two way data bus with the program ROM (IC820), S-RAM (IC822) and address data (for address signal) output to the interface latch (IC818) AD15 Address signal output to the program RAM (IC820) Chip enable signal output to the program RAM (IC820) and S-RAM (IC821, 822) Chip enable signal output to the RC controller (IC815) PCLK...
Page 12
Pin No. Pin Name Function — — Not used (open) — — Not used (open) — — Not used (open) AUBUS-IN Audio bus signal input terminal V.SIGNAL Video signal exist/without “H”: exist SIRCS-IN Sircs signal input from the remote control receiver (IC104) NTSC/PAL Detection signal input of the video system AUBUS-OUT...
Page 13
S VIDEO BOARD IC815 LC86F5864A-5F53 (RC CONTROLLER) Pin No. Pin Name Function Chip enable signal input from the on screen display controller (IC809) INT1 Chip enable signal input terminal Not used (open) INT2 Not used (fixed at “L”) Learn IR signal input terminal “H”: no signal STOP Stop signal input terminal Infrared rays transmission data status signal output to the on screen display controller (IC809)
Page 14
Pin No. Pin Name Function SCK1 Serial data reading clock signal input terminal Not used (open) Not used (fixed at “L”) Sircs signal output terminal TEST1 Test terminal Not used (open) Reset signal input from the on screen display controller (IC809) “L”: reset Sub system clock input terminal Not used (fixed at “L”) Sub system clock output terminal Not used (open) VSS1...
Page 15
DIGITAL BOARD IC3308 SN-PM4007A (DOLBY (AC-3) DEMODULATOR) Pin No. Pin Name Function — Ground terminal — Power supply terminal (+5V) RESET Reset signal input from the master controller (IC3413) “L”: reset OSCON Oscillation on/off control signal input terminal “H”: on (fixed at “H”) DATA Test terminal Not used (fixed at “L”) Test terminal Not used (fixed at “L”)
Page 16
Pin No. Pin Name Function Two-way data bus with the S-RAM (IC3309) — Power supply terminal (+5V) — Ground terminal Test terminal Not used (fixed at “H”) VCXO input terminal (18.432 MHz) VOUT VCXO output terminal (18.432 MHz) Test terminal Not used (fixed at “L”) Test terminal Not used (fixed at “L”) TLD8 Test terminal Not used (fixed at “L”)
Page 17
Pin No. Pin Name Function DOUT Comparator output terminal DOUTB Comparator inverted output terminal Clock (9.216 MHz) output terminal Not used (open) — Ground terminal WINGT Test terminal Not used (open) SYST0 Test terminal Not used (open) SYST1 Test terminal Not used (open) ADST0 Test terminal Not used (open) ADST1...
Page 18
DIGITAL BOARD IC3410 DSP56009FJ88F (DIGITAL SIGNAL PROCESSOR) Pin No. Pin Name Function AGND — Ground terminal (for address bus buffer) MCS0 Chip select signal output to the external RAM device Not used (open) MCS3 Chip select signal output to the external RAM device Not used (open) MA14 Address signal output to the external RAM device Not used (open) MA13...
Page 19
Pin No. Pin Name Function SDO1 Audio serial data output to the digital signal processor (IC3412) SDO0 Audio serial data output to the digital signal processor (IC3412) SVCC — Power supply terminal (+5V) (for serial port) SCKT Audio serial data transfer clock signal output to the digital signal processor (IC3412) Word transmission output to the digital signal processor (IC3412) SCKR Bit clock signal (2.8224 MHz) input terminal...
Page 20
DIGITAL BOARD IC3412 SSP424023FJ88 (DIGITAL SIGNAL PROCESSOR) Pin No. Pin Name Function AGND — Ground terminal (for address bus buffer) MCS0 Chip select signal output to the external RAM device Not used (open) MA15 MA14 Address signal output to the S-RAM (IC3411) MA13 AVCC —...
Page 21
Pin No. Pin Name Function SDO1 Audio serial data output terminal (for center side speaker) SDO0 Audio serial data output terminal (for front side speaker) SVCC — Power supply terminal (+5V) (for serial port) SCKT Bit clock signal (2.8224 MHz) output terminal L/R sampling clock signal (44.1 kHz) output terminal SCKR Audio serial data reading clock signal input from the digital signal processor (IC3410)
Page 22
DIGITAL BOARD IC3413 MB90641APF-G-104-BND (MASTER CONTROLLER) Pin No. Pin Name Function RFERR RF demodulater error signal input terminal “H”: error RFRESET RF demodulater reset signal output terminal “L”: active STOP System stop signal input terminal “L”: stop RDATA Data signal input from the digital audio interface receiver (IC3311) WDATA Data signal output to the digital audio interface receiver (IC3311) DIRLAT...
Page 23
Pin No. Pin Name Function STANDBY Stand by signal input terminal (Fixed at “H”) N.C. — Not used (open) DISPMR Communication request signal input from the FL drive controller (IC105) DISPDATA Serial data signal input from the FL drive controller (IC105) SLVDATA/REQ Communication request signal output to the FL drive controller (IC105) DISPCLK...
Page 24
• Circuit Boards Location AC board PTA board SP TM board AMP board MEMORY board PTB board S VIDEO board MOTOR TM CBV board board SENSOR VIDEO board board TUNER board HP board INPUT board SP SW board AUDIO board F.
Page 37
• IC Block Diagrams IC3311 CXD8521M (DIGITAL BOARD) IC3313 TC74HC151AF-TP1 (DIGITAL BOARD) IC101 TD62C950RF (DISPLAY BOARD) TST2 TEST TST1 AVOCK SUB-Q SCLK/CL XMODE XLAT/CE CKSEL MICOM SWDT/DI C BIT INTERFACE SRDT/DO OUT40 DQSY/LD OUT1 OUT21 CKOUT OUT20 FS128 P GND TIMING L GND LRCK...
Page 38
IC3516 LC7535M-TP (DIGITAL BOARD) R 5dB IN L 5dB IN L CT1 R CT1 L CT2 R CT2 L 5dB OUT R 5dB OUT L 1dB IN R 1dB IN R 1dB OUT L 1dB OUT R VM L VM LEVEL SHIFT CONTROL LATCH...
Page 39
IC803, 804 SN761200N (S VIDEO BOARD) IC811 SN761200N (VIDEO BOARD) MONITOR OUT CTL A DECODER V OUT1 CTL B CTL E V OUT2 CTL C CTL D DECODER IC810, 813 LA7217 (VIDEO BOARD) IC805 MB90095PF-G-186-BND (VIDEO BOARD) YOUT ANALOG COUT SWITCH VIDEO IN VOUT...
Page 40
IC814 MB3512PFQ (VIDEO BOARD) X'tal PHASE 4fsc SHIFT PHASE DET C AMP (STAGE) (Y.SW) Y AMP (STAGE) PEDESTAL CLAMP PEDESTAL CLAMP PHASE PHASE DET 4fsc SHIFT SYNC V-SW X'tal SVIN SEPARATER B/W DET SS-OUT PLL-B IC816, 818 MC74HC373AN (MEMORY BOARD) (ENABLE) OUTPUT CONTROL...
Page 41
IC202 LC7821 (INPUT BOARD) IC001, 601, 651 STK350-230 IC291 LC7821 (AUDIO BOARD) (INPUT BOARD) INPUT L COM1 R COM1 -VEOUT +VEOUT L COM2 R COM2 L COM3 R COM3 LEVEL SHIFT LATCH SHIFT RESISTER BUFFER IC701 µPC2581V (INPUT BOARD) BIAS CIRCUIT PROTECTOR DRIVE DRIVE...
SECTION 5 EXPLODED VIEWS NOTE: The components identified by mark • -XX and -X mean standardized parts, so they • Items marked “*” are not stocked since they ! or dotted line with mark ! are may have some difference from the original are seldom required for routine service.
Page 44
(3) BACK PANEL SECTION Australian Canadian supplied supplied T901 supplied supplied Australian CNS901 chassis section The components identified by Les composants identifiés par une mark ! or dotted line with marque ! sont critiques pour la mark ! are critical for safety. sécurité.
Page 46
SECTION 6 ELECTRICAL PARTS LIST NOTE: The components identified by mark • Due to standardization, replacements in the • Items marked “*” are not stocked since they ! or dotted line with mark ! are parts list may be different from the parts speci- are seldom required for routine service.
Page 68
STR-DA90ESG US Model Canadian Model SERVICE MANUAL Australian Model SUPPLEMENT-1 File this supplement with the service manual. Subject: Change of AMP Board (SPM-98017)