Sony HCD-RG40 specifications HCD-DX30/RG40 Section Electrical Adjustments, CD Section

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HCD-DX30/RG40

SECTION 5

ELECTRICAL ADJUSTMENTS

FM Tuned Level Adjustment

CD SECTION

FM RF Signalgenerator

75 Ω coaxial

Carrier frequency : 98 MHz

Modulation

: AUDIO 1 kHz, 75 kHz

 

deviation (100%)

Output level

: 28 dB (at 75 Ω open)

set

FM ANTENNA terminal (TM101)

Note :

1.CD Block is basically designed to operate without adjustment. Therefore, check each item in order given.

2.Use YEDS-18 disc (3-702-101-01) unless otherwise indicated.

3.Use an oscilloscope with more than 10MΩ impedance.

4.Clean the object lens by an applicator with neutral detergent when the signal level is low than specified value with the following checks.

S-Curve Check

Procedure:

1.Supply a 98 MHz signal at 28 dB from the ANTENNA terminal.

2.Tune the set to 98 MHz.

3.Adjust RV101 to the point (moment) when the TUNED indicator will change from going off to going on.

Adjustment Location: MAIN board

Null Adjustment

Oscilloscope

BD board

TP(FEO)

TP(VC)

Procedure :

1.

Connect oscilloscope to TP (FEO).

2.

Connect between TP (FEI) and TP (VC) by lead wire.

3.

Connect between TP (AGCCON) and TP (D GND) by lead wire.

FM RF Signalgenerator

75 Ω coaxial

Carrier frequency : 98 MHz

Modulation

: AUDIO 1 kHz, 75 kHz

 

deviation (100%)

Output level

: 60 dB (at 75 Ω open)

set

FM ANTENNA terminal (TM101)

4.

Turn Power switch on.

5.

Load a disc (YEDS-18) and actuate the focus search. (In

 

consequence of open and close the disc tray, actuate the focus

 

search)

6.

Confirm that the oscilloscope waveform (S-curve) is

 

symmetrical between A and B. And confirm peak to peak level

 

within 4 ±1 Vp-p.

S-curve waveform

symmetry

Procedure:

1.Supply a 98 MHz signal at 60 dB from the ANTENNA terminal.

2.Tune the set to 98 MHz.

3.Measure voltage between pin 21 and pin 23 of IC 101. Adjust T101 ubtil the voltage becomes 0 V.

Adjustment Location: MAIN board

Adjustment Location

[MAIN BOARD] Component side

T101:NULL

RV101:FM TUNED LEVEL

T101

RV101

RV661:TAPE SPEED

T102

IFT101

RV661

A

within 4 ±1Vp-p

B

7.After check, remove the lead wire connected in step 2 and 3.

Note : • Try to measure several times to make sure than the ratio of A : B or B : A is more than 10 : 7.

•Take sweep time as long as possible and light up the brightness to obtain best waveform.

RF Level Check

oscilloscope

BD board

TP(RF)

TP(VC)

Procedure :

1.Connect oscilloscope to TP (RF).

2.Connect between TP (AGCCON) and TP (D GND) by lead wire.

3.Turned Power switch on.

4.Load a disc (YEDS-18) and playback.

5.Confirm that oscilloscope waveform is clear and check RF signal level is correct or not.

6.After check, remove the lead wire connected in step 2.

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Contents KSM-213DCP SpecificationsNEW Leakage Safety CHECK-OUTHCD-DX30/RG40 Exploded Views Table of ContentsHCD-DX30/RG40 Section Service Note HCD-DX30/RG40 Section General Main unitRemote Control Case TOP HCD-DX30/RG40 Section DisassemblyFront Panel Section CD DdorPanel Board Tape Mechanism DeckKEY Board Base Unit Main Board and Power BoardDriver BOARD, Motor Board and Address Sensor Board HCD-DX30/RG40 Section Test Mode Microprocessor version display MC Test ModeError display Aging ModeDisplay action Action contents Final timing Function Change ModeCD Section HCD-DX30/RG40 Section Electrical AdjustmentsRF PLL Free-run Frequency Check Balance 1 Track jump Check+ Line HCD-DX30/RG40 Section DiagramsCircuit Board Location IC701 4 Stop ModeKSM-213DCP Block Diagrams TUNER/CD SectionTC Block Main SectionIC B/D IC B/D Schematic Diagram Main /4 HCD-DX30/RG40 Semiconductor Location IC 3TPFE0 Printed Wiring Board BD SectionSemiconductor IC B/D AEP,KR Power AMP BoardSchematic Diagram Power AMP Section Panel Board 3333 KEY Board Schematic Diagram KEY Section IC701 IC B/D AEP US,CND,SP,E,AR,E51AEP,SP,E,AR,E51 US,CND SP,E,AR,E51,AUS Except SP,E,AR,E51Schematic Diagram Trans Section 4040 Sbsy Panel Board IC701 UPD780232GC-031-8BT Display ControlIC101 BA1450 Main Board IC Block DiagramsIC701 BA6956AN Driver Board CXA2568M-T BD Board Exploded Views FLD1 Main Board Section CD Mechanism Deck Section HCD-DX30/RG40 Section Electrical Parts List Address Sensor HCD-DX30/RG40 BD Driver KEY KEY Main Mylar HCD-DX30/RG40 MainPLUG, Connector 3P CONNECTOR, FFC 17P CN5PLUG, Connector 2P Diode FilmTerminal Front ENDTERMINAL, Earth TRANSFORMER, ifPhoto Interrupter TRANSFORMER, Bias OscillationBA1A4M-TP BN1F4M-TPR112 216-829-11 Metal Oxide DX30AR,AUS,E,E51,MX,SP,TH,RG40HCD-DX30/RG40 Main Motor Diode LTL77HKYTNNTAPE A/B RG40 HCD-DX30/RG40 PanelScrew +BVTT Indicator TUBE, Fluorescent Inductor 0UH Fluorescent Indicator FLD1SWITCH, Keyboardmdvideo SWITCH, Keyboardtape A/BHCD-DX30/RG40 Power AMP HCD-DX30/RG40 Power AMP Sensor SUB Trans Trans Video OUT HCD-DX30/RG40 Revision History

HCD-RG40, HCD-DX30 specifications

The Sony HCD-DX30 and HCD-RG40 are both versatile systems that exemplify Sony's commitment to delivering exceptional audio quality within compact designs. These home audio systems combine innovative technologies with user-friendly features to enhance your listening experience.

The HCD-DX30 is designed for users who appreciate powerful sound in a straightforward package. This component system includes a combination of CD player, radio tuner, and cassette deck, catering to various preferences. One of its main features is the Mega Bass technology, which boosts low frequencies, delivering a rich and immersive audio experience for music lovers. Additionally, the system supports multiple audio formats, allowing users to enjoy their favorite tunes from CD, cassette, or radio. The implementation of a built-in equalizer allows listeners to customize the sound to match their preferences, ensuring the best playback for any genre.

On the other hand, the HCD-RG40 takes another step forward with its sleek design and modern features. This system integrates the characteristics of the DX30 but enhances them with additional connectivity options. It includes a USB port that allows users to connect flash drives and play digital music files directly, supporting various formats for flexibility. The presence of Bluetooth technology in the HCD-RG40 opens up wireless music streaming possibilities, enabling users to play music from smartphones, tablets, or laptops without the hassle of cables.

Both systems also offer a variety of output options, including headphone jacks and auxiliary inputs, making them compatible with a range of devices. Another notable feature is their timed shut-off function, which contributes to energy efficiency by automatically turning off the system when not in use.

In summary, the Sony HCD-DX30 and HCD-RG40 represent the advancements in home audio systems, showcasing a blend of classic components with modern technology. The HCD-DX30 shines with its robust sound features tailored for traditional media, while the HCD-RG40 caters to the contemporary user with its wireless connectivity and support for digital formats. Whether you’re a casual listener or an audiophile, these systems offer the audio versatility needed for an exceptional home entertainment experience.
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