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Philips ST-D777ES Service Manual

Dab/fm/am tuner
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SERVICE MANUAL
DAB tuner section
Frequency range
174.928 (5A) - 239.200 (13F) MHz
1452.960 (L1) - 1490.624 (L23) MHz
6.9 µV/28 dBf
Sensitivity
Signal-to-noise ratio 100 dB
THD+N
0.005 % (1 kHz)
Channel separation
90 dB (1 kHz)
Selectivity
35 dB (at adjacent channel)
Frequency response
+0.2/-0.3 dB (5 Hz - 20 kHz)
DA converter
Pulse D/A S-TACT128
Digital filter
VC24 (only for DAB analog output)
Digital output
Terminals: Coaxial and Optical
Sampling frequncy: 48 kHz
RDI output
Optical
75 Ω, F female
Aerial terminal
FM tuner section
Frequency range
87.5 - 108.0 MHz
Sensitivity
at 40 kHz derivation
at 26 dB quieting (mono) 0.9 µV/10.3 dBf
at 46 dB quieting (stereo) 23 µV/38.5 dBf
Signal-to-noise ratio at 40 kHz derivation
80 dB (mono), 76 dB (stereo)
THD+N
1 kHz, 40 kHz derivation
WIDE
0.035 % (mono), 0.045 % (stereo)
Channel separation
50 dB (1 kHz) WIDE
Selectivity
at 400 kHz
WIDE 85 dB
NARROW 90 dB
Frequency respose
+0.2/-0.3 dB (30 Hz - 15 kHz)
Aerial terminal
75Ω, IEC male
ST-D777ES
SPECIFICATIONS
AM tuner section
Frequency range
Sensitivity
Signal-to-noise ratio MW: 54 dB (50 mV/m, 999 kHz)
Harmonic distortion
Sensitivity
Aerial terminal
General
Power requirements
Power consumption
Dimensions
Weight
Remote control capability
Station preset capacity max. 99 (DAB, FM and AM total)
Supplied accessories • Audio cord (1)
Design and specifications are subject to change without notice.
AEP Model
UK Model
MW: 522 - 1,611 kHz (9 kHz step)
LW: 144 - 288 kHz
(1 kHz step: Manual tuning)
(3 kHz step: Automatic tuning)
(with AM loop aerial)
MW: 200 µV/m
LW: 700 µV/m
LW: 50 dB (50 mV/m, 216 kHz)
0.3 %
50 dB
Push lever
230 V, AC 50/60 Hz
20 W
430 × 97.5 × 374 mm (w/h/d)
6.2 kg
IR
• AM loop aerial (1)
• FM wire aerial (1)
• DAB wire aerial (1)
• Remote commander (1)
• R6 (size AA) baatteries (2)
DAB/FM/AM TUNER

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Summary of Contents for Philips ST-D777ES

  • Page 1 ST-D777ES SERVICE MANUAL AEP Model UK Model SPECIFICATIONS DAB tuner section AM tuner section Frequency range 174.928 (5A) - 239.200 (13F) MHz Frequency range MW: 522 - 1,611 kHz (9 kHz step) 1452.960 (L1) - 1490.624 (L23) MHz LW: 144 - 288 kHz 6.9 µV/28 dBf...

  • Page 2: Table Of Contents

    TABLE OF CONTENTS GENERAL ······································································· 3 TEST MODE ································································· 12 ELECTRICAL ADJUSTMENTS ····························· 14 DIAGRAMS ··································································· 17 4-1. BLOCK DIAGRAM ·························································· 17 4-2. CIRCUIT BOARDS LOCATION ····································· 18 4-3. PRINTED WIRING BOARD MAIN SECTION ············ 19 4-4. SCHEMATIC DIAGRAM MAIN SECTION (1/4) ········ 20 4-5.

  • Page 3: General

    SECTION 1 GENERAL FRONT PANEL 2 3 4 qd qa ?/1 switch ENTER button DAB button MEMORY button FM button CHARACTER button AM button MONO/SC button TUNING MODE button DISPLAY MODE button PTY button EON button TUNING/SELECT button DISPLAY button MENU button REAR PANEL 1 2 3...
  • Page 4 This section is extracted from instruction manual.

  • Page 12: Test Mode

    SECTION 2 TEST MODE 1. Display Tube Check and KEY Check mode 1. Turn OFF the power. 2. While pressing [DISPLAY] and [MENU] together, turn ON [POWER] . 3. Display tube all lit. 4. Each time the button is pressed, the key number is counted down. After all the 14 buttons are pressed, “OK” appears. When the [DAB], [FM] or [AM] button is pressed only, the following display appears.
  • Page 13 • Audio information display (DAB only) • DAB error rate display Press [DISPLAY] and [ENTER] at the same time under the DAB tuned Press [DAB] and [CHARACTER] at the same time under the DAB tuned condition. (When the software version is 1.04, press [DAB] condition.

  • Page 14: Electrical Adjustments

    SECTION 3 ELECTRICAL ADJUSTMENTS All the settings are performed in the Factory Preset state. (Refer to page 13.) Precautions in Repairing FM Discriminator ADJUSTMENT (NULL and MONO Distortion Adjustment) If the front end unit fails, it is difficult to repair the inner circuits, so replace the entire front end unit.
  • Page 15 Stereo and Tuned Level Adjustment Stereo Separation Adjustment Setting: Setting: FM RF SSG FM RF SSG level meter FM ANTENNA (75Ω) LINE OUT FM ANTENNA (75Ω) Modulation : Stereo Standard signal Modulation : Stereo Standard signal Output level : 6mV (76dB) (at 75 Ω open) Output level : 18µV (25dB) (at 75 Ω...
  • Page 16 AM SECTION AM Tuned Level Adjustment Setting: loop antenna loop antenna (Supplied accessories) AM RF SSG AM antenna 30% amplitude 60 cm terminal (TM1) modulation by 400 Hz signal Field strength dB (µV/m) =SSG output level dB (µV/m) –26 dB. Carrier frequency : 216kHz Modulation : AUDIO 400Hz, 30% modulation Procedure:...

  • Page 17: Diagrams

    ST-D777ES SECTION 4 DIAGRAMS 4-1. BLOCK DIAGRAM J101 DIGITAL OUT (COAXIAL) DAB FRONTEND DAB DECODER FE101 IC104 IC107 +B4(9V) IC108 • Signal Path DA OUT DIGITAL OUT IC110 (OPTICAL) +B3(9V) : FM +B2(5V) DAB+9V +B1(5V) RDI OUT IC109 RDI OUT...

  • Page 18: Circuit Boards Location

    4-2. CIRCUIT BOARDS LOCATION THIS NOTE IS COMMON FOR PRINTED WIRING BOARDS AND SCHEMATIC DIAGRAMS. (In addition to this, the necessary note is printed in each block.) POWER board For schematic diagrams. For printed wiring boards. Note: Note: AC SW board •...

  • Page 19: Printed Wiring Board Main Section

    ST-D777ES • Refer to page 18 for Circuit Boards Location. 4-3. PRINTED WIRING BOARD MAIN SECTION • Semiconductor Location (Page 27) (Page 27) Ref. No. Location D201 D202 D203 D204 D301 D302 D501 D502 D503 D601 D-12 (Page 25) D602...

  • Page 20: Schematic Diagram Main Section (1/4)

    ST-D777ES • Refer to page 19 for Printed Wiring Board. • Refer to page 28 for IC Pin Function Description. 4-4. SCHEMATIC DIAGRAM MAIN SECTION (1/4) • Refer to page 18 for Waveform. • Refer to page 31 for IC Block Diagrams.

  • Page 21: Schematic Diagram Main Section (2/4)

    ST-D777ES • Refer to page 19 for Printed Wiring Board. • Refer to page 32, 33 for IC Block Diagrams. 4-5. SCHEMATIC DIAGRAM MAIN SECTION (2/4) • Refer to page 18 for Waveform.

  • Page 22: Schematic Diagram Main Section (3/4)

    ST-D777ES • Refer to page 19 for Printed Wiring Board. • Refer to page 33 for IC Block Diagrams. 4-6. SCHEMATIC DIAGRAM MAIN SECTION (3/4) • Refer to page 18 for Waveform. • Refer to page 29 for IC Pin Function Description.

  • Page 23: Schematic Diagram Main Section (4/4)

    ST-D777ES • Refer to page 19 for Printed Wiring Board. • Refer to page 31 for IC Block Diagrams. 4-7. SCHEMATIC DIAGRAM MAIN SECTION (4/4) • Refer to page 18 for Waveforms. (Page 26)

  • Page 24: Schematic Diagram Display Section

    ST-D777ES 4-8. SCHEMATIC DIAGRAM DISPLAY SECTION (Page 26)

  • Page 25: Printed Wiring Board Display Section

    ST-D777ES • Refer to page 18 for Circuit Boards Location. 4-9. PRINTED WIRING BOARD DISPLAY SECTION (Page 19) • Semiconductor Location Ref. No. Location IC801 C-13 IC802 IC803 Q801 Q802 Q803 Q804 Q805 Q806...

  • Page 26: Schematic Diagram Power Section

    ST-D777ES • Refer to page 33 for IC Block Diagram. 4-10. SCHEMATIC DIAGRAM POWER SECTION (Page 23) (Page 22) The components identified by mark 0 or dotted line with mark 0 are critical for safety. Replace only with part number specified.

  • Page 27: Printed Wiring Board Power Section

    ST-D777ES • Refer to page 18 for Circuit Boards Location. 4-11. PRINTED WIRING BOARD POWER SECTION • Semiconductor Location Ref. No. Location D901 D902 D903 D904 D905 D906 D909 D910 D911 D912 D913 D914 D919 IC901 IC902 IC903 IC905 IC906...

  • Page 28: Ic Pin Function Description

    4-12. IC PIN FUNCTION DESCRIPTION IC104 MN66710 DAB DECODER (MAIN BOARD) Pin No. Pin Name Description Pin No. Pin Name Description MPUSYNC Microprocessor operation reference signal RAD8 External DRAM address bit 8 NPADRDY PAD data ready signal NRAMOE External DRAM output enable MPUCLK Microprocessor I/F data clock input NRCAS...
  • Page 29 IC601 HD6432237 SYSTEM CONTROL (MAIN BOARD) Pin No. Pin Name Description 1 – 14 — Input output terminal - not used — Power supply terminal (+3.3 V) — Input output terminal - not used — Ground terminal 18 – 28 —...
  • Page 30 Pin No. Pin Name Description FL-CL Clock output terminal to fluorescence display tube drive IC (MSM9202) FL-ENB1 Enable output terminal 1 to fluorescence display tube drive IC (MSM9202) FL-ENB2 Enable output terminal 1 to fluorescence display tube drive IC (MSM9202) RD-CL Clock output terminal from RDS demodulation IC (BU1924F) RD-DO...

  • Page 31: Ic Block Diagrams

    4-13. IC BLOCK DIAGRAMS IC501 CXD8762Q (MAIN board) 64 63 62 61 60 59 58 57 56 55 54 53 52 51 50 49 48 47 46 45 44 43 42 41 SERIAL TEST CKTL2 DIGITAL CKTL1 FILTER CKTL0 40 DINIT TEST2 39 INAF TEST1...
  • Page 32 IC201 LC72130 (MAIN board) SWALLOW COUNTER 1/16.1/17 4bits POWER REFERENCE RESET DIVIDER SWALLOW COUNTER 1/16.1/17 4bits REFERENCE DIVIDER PHASE DETECTOR CHARGE PUMP DATA SHIFT REGISTER I / F I / F LATCH IC202 LA1245 (MAIN board) IC203 LA1235 (MAIN board) (IF) AM DET MUTING...
  • Page 33 IC301 LA3401 (MAIN board) 21 20 19 18 17 16 LAMP DRIVE FM/AM SELECT CONTROL MUTING LOGIC / MUTE ON/OFF FM/AM SELECT MUTING IC401 BU1924F (MAIN board) 12 11 10 CLOCK TEST PLL 57kHz RDS/ARI 1187.5Hz COMPARATOR 8th SWITCHED BIPHASE CAPACITOR DECODER FILTER...

  • Page 34: Exploded Views

    SECTION 5 EXPLODED VIEWS NOTE: • -XX, -X mean standardized parts, so they may • The mechanical parts with no reference number The components identified by mark 0 or have some differences from the original one. in the exploded views are not supplied. dotted line with mark 0 are critical for safety.

  • Page 35: Main Section

    5-2. MAIN SECTION not supplied T901 not supplied not supplied Ref. No. Part No. Description Remarks Ref. No. Part No. Description Remarks 4-226-954-01 CHASSIS, SUB 3-657-760-00 WASHER 4-226-951-01 CHASSIS (LR) 4-226-953-01 PANEL, BACK A-4428-525-A POWER BOARD, COMPLETE 3-703-244-00 BUSHING (2104), CORD 0 61 A-4428-528-A MAIN BOARD, COMPLETE 1-575-651-21 CORD, POWER...

  • Page 36: Electrical Parts List

    SECTION 6 DISPLAY AC SW ELECTRICAL PARTS LIST NOTE: • Due to standardization, replacements in the • CAPACITORS: • SEMICONDUCTORS parts list may be different from the parts uF: µF In each case, u: µ, for example: specified in the diagrams or the components •...
  • Page 37 ENCODER KEY SW MAIN Ref. No. Part No. Description Remarks Ref. No. Part No. Description Remarks 1-676-331-11 ENCODER BOARD C130 1-128-840-11 ELECT 47uF C131 1-128-840-11 ELECT 47uF ************** C132 1-162-219-31 CERAMIC 68PF 5.00% 50V < VARIABLE RESISTOR > C133 1-128-840-11 ELECT 47uF C134 1-127-721-11 ELECT...
  • Page 38 MAIN Ref. No. Part No. Description Remarks Ref. No. Part No. Description Remarks C253 1-162-306-11 CERAMIC 0.01uF 30.00% 16V C507 1-162-288-31 CERAMIC 330PF C254 1-162-306-11 CERAMIC 0.01uF 30.00% 16V C508 1-162-294-31 CERAMIC 0.001uF C255 1-128-854-11 ELECT 0.47uF C509 1-136-850-11 MYLAR 0.1uF 5.00% 63V C256...
  • Page 39 MAIN Ref. No. Part No. Description Remarks Ref. No. Part No. Description Remarks C605 1-127-718-91 ELECT MELF 100uF IC201 8-759-288-54 IC LC72130 C607 1-162-306-11 CERAMIC 0.01uF 30.00% 16V IC202 8-759-812-45 IC LA1245 C608 1-127-718-91 ELECT MELF 100uF IC203 8-759-812-35 IC LA1235 C609 1-164-159-11 CERAMIC 0.1uF...
  • Page 40 MAIN Ref. No. Part No. Description Remarks Ref. No. Part No. Description Remarks Q216 8-729-230-99 TRANSISTOR 2SC2669OY-TPE4 R228 1-247-807-31 CARBON 1/4W Q301 8-729-029-56 TRANSISTOR DTA144ESA-TP R229 1-249-419-11 CARBON 1.5K 1/4W F Q302 8-729-230-99 TRANSISTOR 2SC2669OY-TPE4 R230 1-249-409-11 CARBON 1/4W F Q303 8-729-922-37 TRANSISTOR 2SD2144S-TP-UVW...
  • Page 41 MAIN Ref. No. Part No. Description Remarks Ref. No. Part No. Description Remarks R288 1-249-432-11 CARBON 1/4W R514 1-249-568-11 CARBON 4.7K 1/4W R289 1-249-421-11 CARBON 2.2K 1/4W F R515 1-249-568-11 CARBON 4.7K 1/4W R290 1-249-422-11 CARBON 2.7K 1/4W F R516 1-249-568-11 CARBON 4.7K 1/4W...
  • Page 42 MAIN POWER Ref. No. Part No. Description Remarks Ref. No. Part No. Description Remarks < VARIABLE RESISTOR > C927 1-128-860-11 ELECT 47uF C928 1-119-800-11 ELECT 100uF 20.00% 16V RV201 1-241-764-11 RES, ADJ, CARBON 10K C929 1-119-806-21 ELECT 3300uF 20.00% 25V RV202 1-241-765-11 RES, ADJ, CARBON 22K RV203...
  • Page 43 POWER Ref. No. Part No. Description Remarks Ref. No. Part No. Description Remarks R907 1-249-421-11 CARBON 2.2K 1/4W F ************** R908 1-249-415-11 CARBON 1/4W F HARDWARE LIST R909 1-249-435-11 CARBON 1/4W ************** R910 1-249-429-11 CARBON 1/4W R911 1-249-421-11 CARBON 2.2K 1/4W F 7-685-134-19 SCREW +P 2.6X8 TYPE2 NON-SLIT 7-685-548-19 SCREW +BTP...
  • Page 44 ST-D777ES Sony Corporation 9-929-088-11 2000C167549-1 Home Audio Division Company Printed in Hungary © 2000.3 Published by Quality Assurance Dept.

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