Sony CFD-RG880CP – Service mode – Circuit diagram - CD Radio Cassette Coder

Speaker
Full range: 10 cm (4 in.) dia., 3.2 Ω, cone type (2)
Woofer: 13 cm (5 1/8 in.) dia., 4 Ω, cone type (1)
Tweeter: 2 cm (13/16 in.) dia. (2)
Power output
4 W + 4 W (at 3.2 Ω, 10% harmonic distortion)
Woofer: 12 W (at 4 Ω, 10% harmonic distortion)

Model number: CFD-G700CP/G770CP/G770CPK

CD mechanism type: KSM-213CDP/C2NP.

Optical pickup: KSS-213C.

Tape transport mechanism type: MF-G505V.

Model name using similar mechanism: CFD-G505

Abbreviation
BR : Brazilian model
CET : East European & Russian model
E41 : 230V AC area in E model
E92 : 120V AC area in E model
MX : Mexican model

LASER DIODE AND FOCUS SEARCH OPERATION CHECK
1. Turn ON the [POWER] button.
2. Open the CD lid.
3. Turn on SW2 with screwdriver, etc. as following figure.
4. Press the [>||] (CD) button.
5. Confirm the laser diode emission while observing the objecting lens. When there is no emission, Auto Power Control circuit or Optical Pick-up is broken.
Objective lens moves up and down eight times for focus search.

On repairing CD section, playing a disc without the CD lid, use
Chuck Plate Jig.

• Code number of Chuck Plate Jig : X-4918-255-1

MC COLD RESET

The cold reset clears all data including preset data stored in the memory to initial conditions. Execute this mode when returning the set to the customer.

Procedure

1. In the standby status, press the [POWER] button to turn the power on.

2. Press three buttons of [Stop], [MODE] and at last [POWER] simultaneously.

3. When “RESET” appears, the machine enters standby status.

PANEL TEST MODE

Enter The Panel Test Mode

Procedure

1. In the standby status, press the [POWER] button to turn the power on.

2. Press three buttons of [REPEAT], [Stop], and [DSPL/ENT] simultaneously.

3. When the panel test mode is activated, LEDs and segments of LCD are all turned on.

Circuit Diagram [Schematic]

CD board

LCD board

Power and USB board

Main board

Version Check

Procedure

1. In the panel test mode (all LEDs and segments of LCD are turned on), press the [ROCK] button.

2. On the LCD, date and version are displayed “xxxxxxxx”. For example, “0305V001”.

3. From this status, press the [DANCE] button, and the destination is displayed. For example, “1024 MX2”.

4. To release from this mode, press three buttons of [REPEAT], [Stop], and [DSPL/ENT] simultaneously.

CHANGE-OVER THE AM TUNING INTERVAL
The AM tuning interval can be changed over 9 kHz or 10 kHz.
Procedure
1. Press the [POWER] button to turn the power on.
2. Press the [RADIO/BAND] button to select TUNER (AM) function.
3. Select the AM BAND mode and press the [DSPL/ENT] button for an extended time in the AM BAND state.
4. Then, press the [AUTO PRESET/RADIO/BAND] for an extended time.
5. Next, press the [PRESET +] [PRESET –] button select either 9k/10k.
6. Finally, press the [DSPL/ENT] button to set the selected step.

CD SERVICE MODE

This mode can move the SLED of the optical pick-up, and also can turn the optical pick-up laser power on and off.

1. Press the [POWER] button to turn the power on.

2. Press the [CD] button to select the CD mode.

3. Press three buttons of [Stop], [VOL +], and [SALSA] simultaneously.

4. It enters the CD service mode and displays “SE MODE”.

5. To exit from this mode, press three buttons of [x], [VOL +], and [SALSA] simultaneously.