Sony CDX GT41US - FM/AM COMPACT DISC PLAYER – Schematic (Circuit Diagram)

FM-AM COMPACT DISC PLAYER Sony CDX-GT41UW - GT410U - GT460U - GT460US – Schematic – Wiring diagram. Used ICs: TDA8588AJ/N2/R1 – BA8271F-E2 – BD3442FS-E2 – BD9778HFP – NJM2387ADL3 – M880F46PF-0-101E1

Power amplifier section
Outputs Speaker outputs (sure seal connectors)
Speaker impedance 4 – 8 ohms
Maximum power output - 52 W × 4 (at 4 ohms)
FM Tuning range GT41UW/GT410U
87.5 – 107.9 MHz
GT460U/GT460US
87.5 – 108.0 MHz (at 50 kHz step)
87.5 – 107.9 MHz (at 200 kHz step)
FM tuning interval GT460U/GT460US:
50 kHz/200 kHz switchable.

AM Tuning range GT41UW/GT410U
530 – 1,710 kHz
GT460U/GT460US
531 – 1,602 kHz (at 9 kHz step)
530 – 1,710 kHz (at 10 kHz step)
AM tuning interval GT460U/GT460US
9 kHz/10 kHz switchable.
AUDIO POWER SPECIFICATIONS (US MODEL)
POWER OUTPUT AND TOTAL HARMONIC DISTORTION
23.2 watts per channel minimum continuous average power into 4 ohms, 4 channels driven from 20 Hz to 20 kHz with no more than 5% total harmonic distortion.
CD Drive Mechanism Type MG-101U-188//Q
Optical Pick-up Name DAX-25A
NOTE FOR REPLACEMENT OF THE SERVO BOARD
When repairing, the complete SERVO board (A-1206-357-A) should be replaced since any parts in the SERVO board cannot be repaired

Click on the pictures to zoom in

Circuit Diagram (Schematic)

Connection diagram

1 To a metal surface of the car First connect the black ground (earth) lead, then connect the yellow and red power supply leads.

2 To the power antenna (aerial) control lead or power supply lead of antenna (aerial) booster

Notes

• It is not necessary to connect this lead if there is no power antenna (aerial) or antenna (aerial) booster, or with a manually-operated telescopic antenna (aerial).  • When your car has a built-in FM/AM antenna (aerial) in the rear/side glass, see “Notes on the control and power supply leads.”

3 To AMP REMOTE IN of an optional power amplifier

This connection is only for amplifiers. Connecting any other system may damage the unit.

4 To the +12 V power terminal which is energized in the accessory position of the ignition switch.

Notes

• If there is no accessory position, connect to the +12 V power (battery) terminal which is energized at all times.  Be sure to connect the black ground (earth) lead to a metal surface of the car first.

• When your car has a built-in FM/AM antenna (aerial) in the rear/side glass, see “Notes on the control and power supply leads.”

5 To the +12 V power terminal which is energized at all times.  Be sure to connect the black ground (earth) lead to a metal surface of the car first.

Notes on the control and power supply leads

• The power antenna (aerial) control lead (blue) supplies +12 V DC when you turn on the tuner.

• When your car has built-in FM/AM antenna (aerial) in the rear/side glass, connect the power antenna (aerial) control lead (blue) or the accessory power supply lead (red) to the power terminal of the existing antenna (aerial) booster.

• A power antenna (aerial) without a relay box cannot be used with this unit.

Memory hold connection

When the yellow power supply lead is connected, power will always be supplied to the memory circuit even when the ignition switch is turned off.

Notes on speaker connection

• Before connecting the speakers, turn the unit off.

• Use speakers with an impedance of 4 to 8 ohms, and with adequate power handling capacities to avoid its damage.

• Do not connect the speaker terminals to the car chassis, or connect the terminals of the right speakers with those of the left speaker.

• Do not connect the ground (earth) lead of this unit to the negative (–) terminal of the speaker.

• Do not attempt to connect the speakers in parallel.

• Connect only passive speakers. Connecting active speakers (with built-in amplifiers) to the speaker terminals may damage the unit.

• To avoid a malfunction, do not use the built-in speaker leads installed in your car if the unit shares a common negative (–) lead for the right and left speakers.

• Do not connect the unit’s speaker leads to each other.

Note on connection

If speaker and amplifier are not connected correctly, “FAILURE” appears in the display. In this case, make sure the speaker and amplifier are connected correctly.