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Sony ST-SE370 Service Manual

Fm stereo fm-am tuner
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3 7 63 1515 0
SERVICE MANUAL
Ver 1.0 2001.04
FM tuner section
Frequency range
TE
Aerial terminals
L 13942296513
Intermediate frequency
Sensitivity
Usable sensitivity (IHF)
S/N
Harmonic distortion
Frequency response
Separation
Selectivity
Output
www
.
Sony Corporation
9-873-833-11
2001D0500-1
Home Audio Company
C 2001.4
Shinagawa Tec Service Manual Production Group
http://www.xiaoyu163.com
Photo: Black model
AM tuner section
Frequency range
87.5 - 108.0 MHz
MW:
(U.S. models: 100 kHz
step, other models: 50 kHz
U.S. models:
step)
Singaporean and Australian models:
75 Ω, unbalanced
U.S. models: F-TYPE
CONNECTOR,
Other models:
other models: IEC-male
LW:
10.7 MHz
Intermediate frequency
at 26 dB quieting (mono)
10.3 dBf, 0.9 µV/75 Ω
at 46 dB quieting (stereo)
Usable Sensitivity
38.5 dBf, 23 µV/75 Ω
MW:
LW:
10.3 dBf, 0.9 µV/75Ω
Signal-to-noise ratio
MW:
at 40 kHz deviation
74 dB (mono), 69 dB
LW:
(stereo)
0.09% (mono),
Harmonic distortion
0.18% (stereo)
30 Hz - 15 kHz
Selectivity
(+0.5/–1.0 dB)
45 dB at 1 kHz
at 400 kHz
85 dB
at 300 kHz
70 dB
at 40 kHz deviation
600 mV
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u163
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http://www.xiaoyu163.com
ST-SE370
2 9
8
SPECIFICATIONS
530 - 1,710 kHz
(10 kHz step*)
Q Q
531 - 1,710 kHz
3
6 7
1 3
1 5
(9 kHz step)
531 - 1,602 kHz
(9 kHz step)
144 - 288 kHz
(1 kHz step)
450 kHz
(with AM loop aerial)
200 µV/m
700 µV/m
54 dB
(50 mV/m, 999 kHz)
50 dB
(50 mV/m, 216 kHz)
0.3% (50 mV/m,
400 Hz)
50 dB
FM STEREO FM-AM TUNER
co
.
9 4
2 8
US Model
AEP Model
UK model
E Model
Australian Model
General
Power requirements
U.S. models:
120 V AC, 60 Hz
Australian models:
230 V AC, 50 Hz
Other models:
230 V AC, 50/60 Hz
Power consumption
10 W
0 5
8
2 9
9 4
2 8
Dimensions
430 x 83 x 290 mm
(w/h/d)
Weight
2.5 kg
Supplied accessories
Audio cord (1)
AM loop antenna (1)
FM wire antenna (1)
* (U.S. models only.) You can change the AM tuning
interval to 9 kHz. After tuning in any AM station,
turn off the tuner. Hold down the numeric button 9
and press the POWER button. To reset the scale to
10 kHz, hold down the numeric button 0 and press
the POWER button to turn on the tuner. All preset
stations will be erased when you change the tuning
interval.
Design and specifications are subject to change
without notice.
m
9 9
9 9

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  Summary of Contents for Sony ST-SE370

  • Page 1 ST-SE370 3 7 63 1515 0 SERVICE MANUAL US Model AEP Model Ver 1.0 2001.04 UK model E Model Australian Model Photo: Black model SPECIFICATIONS AM tuner section General FM tuner section Frequency range Power requirements Frequency range 87.5 - 108.0 MHz U.S.

  • Page 2: Table Of Contents

    LINE WITH MARK 0 ON THE SCHEMATIC DIAGRAMS AND IN THE PARTS LIST ARE CRITICAL TO SAFE OPERATION. REPLACE THESE COMPONENTS WITH SONY PARTS WHOSE PART NUMBERS APPEAR AS SHOWN IN THIS MANUAL OR IN SUPPLEMENTS PUB- LISHED BY SONY.

  • Page 3: General

    ST-SE370 SECTION 1 This section is extracted from instruction manual. 3 7 63 1515 0 GENERAL LOCATION OF CONTROLS – Front Panel – AUTO BETICAL SELECT (European model only) MENU 8 (9, 11, 14) qh (7, 12) Numeric buttons qs (7–9)

  • Page 4: Disassembly

    ST-SE370 SECTION 2 DISASSEMBLY 3 7 63 1515 0 • This set can be disassembled in the order shown below. 2-1. DISASSEMBLY FLOW 2-2. CASE (407026) (Page 4) 2-3. MAIN BOARD (Page 5) Note: Follow the disassembly procedure in the numerical order given.

  • Page 5: Main Board

    ST-SE370 3 7 63 1515 0 2-3. MAIN BOARD 2 connector (CNP951) 2 connector (CNP702) 2 connector (CNP901) 1 wire (flat type) (15 core) (CN101) 2 connector (CNP701) 3 screw (BVTP3 × 8 (S)) 5 MAIN board 4 screw (BVTT3 ×...

  • Page 6: Test Mode

    ST-SE370 SECTION 3 TEST MODE 3 7 63 1515 0 NOTE : The preset data will be erased when this test mode is used. Therefore, take down the data before setting this mode and preset the data again after completing operations in this mode.
  • Page 7 ST-SE370 3 7 63 1515 0 4. Forced RESET Clears all the RAMs and sets the initial state. (1) Turn OFF the power. (2) While pressing 5 and BAND together, turn ON POWER . 5. Language Change 1. Turn OFF the power.

  • Page 8: Electrical Adjustments

    ST-SE370 SECTION 4 ELECTRICAL ADJUSTMENTS 3 7 63 1515 0 FM Signal Level Adjustment FM RF signal generator Carrier frequency : 98 MHz Modulation : 1 kHz, 40 kHz deviation FM ANTENNA : 6.3 mV (76dB µ ) Output level 75 Ω...

  • Page 9: Diagrams

    ST-SE370 SECTION 5 3 7 6 3 1 5 1 5 0 DIAGRAMS 5-1. NOTE FOR PRINTED WIRING BOARDS AND SCHEMATIC DIAGRAMS • Circuit Boards Location (In addition to this, the necessary note is printed in each block) Note on Printed Wiring Board:...

  • Page 10: Printed Wiring Boards - Main Section

    ST-SE370 3 7 6 3 1 5 1 5 0 5-2. PRINTED WIRING BOARDS – MAIN Section – • See page 9 for Circuit Boards Location. (Page 12) (Page 12) DISPLAY BOARD DISPLAY BOARD CN701 CN702 (AEP, UK) AC SW BOARD...

  • Page 11: Schematic Diagram - Main Section

    ST-SE370 3 7 6 3 1 5 1 5 0 5-3. SCHEMATIC DIAGRAM – MAIN Section – • • See page 9 for Waveform. See page 14 for IC Block Diagram. TB101 SUPPLIED WITH THE ASSEMBLED BLOCK (EXCEPT AEP,UK)

  • Page 12: Printed Wiring Boards - Display Section

    ST-SE370 3 7 6 3 1 5 1 5 0 5-4. PRINTED WIRING BOARDS – DISPLAY Section – • See page 9 for Circuit Boards Location. (Page 10) (Page 10) MAIN BOARD MAIN BOARD CNP702 CNP701 DISPLAY BOARD EXCEPT...

  • Page 13: Schematic Diagram - Display Section

    ST-SE370 5-5. SCHEMATIC DIAGRAM – DISPLAY Section – • • See page 9 for Waveform. See page 14 for IC Pin Function Description. 3 7 6 3 1 5 1 5 0 FL701 FLUORESCENT INDICATOR TUBE CN702 R732 SIGNAL...

  • Page 14: Ic Pin Function Description

    ST-SE370 3 7 6 3 1 5 1 5 0 • IC Block Diagrams 5-6. IC PIN FUNCTION DESCRIPTION – MAIN Board – • DISPLAY BOARD IC701 µPD78045FGF-130-3B9 (SYSTEM CONTROL) IC201 LA1235 Pin No. Pin Name Description IC901 LA5667...

  • Page 15: Exploded Views

    ST-SE370 SECTION 6 EXPLODED VIEWS 3 7 63 1515 0 NOTE: • Items marked “*” are not stocked since they • -XX and -X mean standardized parts, so they The components identified by mark 0 or dotted line with mark may have some difference from the original are seldom required for routine service.

  • Page 16: Front Panel Section

    ST-SE370 3 7 63 1515 0 6-2. FRONT PANEL SECTION L 13942296513 supplied with RV701 Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark 4-997-882-41 KNOB (T) (SILVER) 1-681-067-11 AC SW BOARD 4-997-882-51 KNOB (T) (BLACK) 4-951-620-01 SCREW (2.6X8), +BVTP...

  • Page 17: Chassis Section

    ST-SE370 3 7 63 1515 0 6-3. CHASSIS SECTION PT901 L 13942296513 TB101 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.

  • Page 18: Electrical Parts List

    ST-SE370 SECTION 7 AC SW 3 7 63 1515 0 DISPLAY ELECTRICAL PARTS LIST NOTE: • Due to standardization, replacements in the • Items marked “*” are not stocked since they The components identified by mark 0 or dotted line with mark parts list may be different from the parts speci- are seldom required for routine service.
  • Page 19 ST-SE370 3 7 63 1515 0 DISPLAY ENCODER MAIN Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark R753 1-249-407-11 CARBON 1/4W A-4476-427-A MAIN BOARD, COMPLETE (AEP, UK) R754 1-249-408-11 CARBON 1/4W A-4476-433-A MAIN BOARD, COMPLETE (US)
  • Page 20 ST-SE370 MAIN 3 7 63 1515 0 Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark C905 1-126-953-11 ELECT 2200uF R302 1-249-441-11 CARBON 100K 1/4W C906 1-126-969-11 ELECT 220uF (AEP, UK) C907 1-126-935-11 ELECT 470uF 6.3V...
  • Page 21 ST-SE370 3 7 63 1515 0 Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark R764 1-249-430-11 CARBON 1/4W R781 1-249-418-11 CARBON 1.2K 1/4W < SWITCH > S713 1-771-349-21 SWITCH, KEYBOARD (MENU) S714 1-771-349-21 SWITCH, KEYBOARD (RETURN)
  • Page 22 ST-SE370 3 7 63 1515 0 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.