Roadstar HIF-6907 MP User manual

Service Manual - HIF-6907 MP

HIF-6907 MP

REVISION SHEET

REV# BY DETAILS DATE

0 cbbyvox First release 2006-02-09

Model No.:HIF-6907MP TITLE: REVISION SHEET Revision No.: 0

Base Model: Nil Revision Date: 2006-02-09

INDEX

1.WARNING AND TECHNICAL SPECIFICATION

2.ALIGNMENT

3.BLOCK DIAGRAM

4.FUNCTION DIAGRAM

5.SPECIFICATION

6.VOLTAGE TABLE

7.TROUBLESHOOTING

8.DISASSEMBLY INSTRUCTION

9.EXPLOSION DIAGRAM AND BOM

10.WIRE ASSEMBLY DIAGRAM

11.PRINCIPLE DIAGRAM

12.REPAIR DIAGRAM

13.MATERIAL BILL OF APPLIANCE 40-44

21-23

24-25

7-16

19-20

17-18

Model No.:HIF-6907MP TITLE: INDEX Revision No.: 0

Base Model:Nil Revision Date: 2006-02-09

4-6

27-31

33-35

36-39

WARNING:

FOR CONTINUED SAFETY THE FOLLOWING PRECAUTIONS SHOULD BE FOLLOWED

DURING SERVICING.

1.MAKE SURE POWER CORD IS DISCONNECTED BEFORE REPLACING ANY PART.

2.REPLACE WITH TYPE, CRITICAL PARTS WITH! MAKE ON THIS DIAGRAM.

3.THE FOLLOWING TEST MUST BE IMPLEMENTED AFTER EACH REPAIR BEFORE

RETURNING IT TO CUSTOMER.USE AN OHM-METER TO MEASURE THE F.C.

RESISTANCE FROM BOTH A.C.CONDUCTORS TO ANY EXPOSED METALLIC PART

SUCH AS A SCREW HEAD.METAL INLAYS ETC. THE RESISTANCE MEASURED SHOULD

BE 10 MEGAOHMS MINIMUM.

TECHNICAL SPECIFICATION

Power output :2 Watts RMS per channel NOTE:

into 8 ohms In keeping with our policy of continually

Frequency response :40Hz-15KHz improving our service and the technical

Bass Boost :100Hz+10dB quality of our products we reserve the right

to change component type.manufactures

sources of supply of technical specification

are any time.

TUNER SECTION

FM Section :88MHz-108MHz

AM Section :520KHz-1600KHZ

CASSETTE SECTION

Tape :Cassette type

Tape :4.75cm per second

Tracks :2Tracks stereo

Frequency Response :125Hz-8KHz

CD PLAYER SECTION

Frequency Response :40Hz-10KHz

S/N Ratio :60dB

Channel Separation :40dB

MODEL:HIF-6907MP

Model No.:HIF-6907MP TITLE: WARNING AND TECHNICAL

SPECIFICATION Revision No.: 0

Base Model: Nil Revision Date: 2006-02-09

INSTRUMENTS REQUIRED: AM&FM Signal generator

IF Scope&2tracks Oscilloscope

AM/FM IF ALIGNMENT

Set output of signal generator no higher than necessary to obtain an output reading.

Slide the function switch to the tuner position and the band switch to the AM position.

Set volume control to reference output.

Use loop antenna to Radiate the Signal into the Receiver Antenna..

RADIO SETTING ADJUSTMENT REMARKS

GENERATOR

10.7/（AM465）KHZ Scope across FM T102 Adjust the

10.8KHz Speaker jack Wave for maximum

10.9KHz Or IC TA2111 AM T101 &good Output

Pin(13 or 14)

AM RF ALIGNMENT

SIGNAL RADIO SETTING INDICATOR ADJUSTMENT REMARKS

GENERATOR

520KHz Tune to 520KHz SCOPE across T103 Adjust for maximum

400Hz (low end). Speaker jack or & good Output.

Modulation IC TA2111

1620KHz Tune to 1600KHz pin(13 or 14) VC101-TCO Adjust for maximum

400Hz (high end). &good output

Modulation

600KHz 600KHz VTVM&SCOPE BAR ANT. -AM Adjust for maximum

Across Speaker &good Output

1400KHz 1400KHz Jack VC101-TAC Adjust for maximum

&good Output

FM RF ALIGNMENT

Connect Signal Generator across antenna terminals.

Adjustment of coils should not be attempted unless the Original coil is deformed or has been replaced.

Slide the function switch to the tuner position and the band switch to the FM position.

Set Volume control to reference output.

SIGNAL

GENERATOR RADIO SETTING INDICATOR ADJUSTMENT REMARKS

87.5MHz Tune to <88MHz L103 Adjust for maximum

1000Hz (low end ) SCOPE across &good Output

modulation Speaker jack or

108.3MHz Tune to﹥108MHz IC TA2111 VC101-FMO Adjust for maximum

1000Hz (high end ). Pin(13 or 14) &good Output.

modulation

90MHz 90MHz VTVM&SCOPE L102 Adjust for maximum.

Across SPEAKER &good output

106MHz 106MHz Jack C VC101-FMA Adjust for maximum.

&Good Output

ALIGNMENT PROCEDURES

SIGNAL INDICATOR

une to 90.3M/（AM 600）KH

high end).（AM Lowend）

Model No.:HIF-6907MP TITLE: ALIGNMENT Revision No.: 0

Base Model:Nil Revision Date: 2006-02-09

ALIGNMENT INSTRUCTIONS FOR CASSETTE TAPE DECK

Figure as diagram:

HEAD AZIMUTH: While playing test tape (6K3Hz) RECORDING BIAS: Press "Record" button, adjust L201

Adjust azimuth screw on the left side and the frequency move to 52KHz.

of the tape head for maximum output

for both L/R channel

INSTRUMENT REQUIRED: A. AC VOLTMETER

B. FREQUENCY COUNTER

ADJUSTMENT DIAGRAM:

Model No.: HIF-6907MP TITLE: ALIGNMENT Revision No.: 0

Base Model:Nil Revision Date: 2006-02-09

Model No.:HIF-6907MP TITLE: ALIGNMENT Revision No.: 0

Base Model:Nil Revision Date: 2006-02-09

Model No.:HIF-6907MP TITLE: BLOCK DIAGRAM Revision No.: 0

Base Model: Nil Revision Date: 2006-02-09

Model No.:HIF-6907MP TITLE: BLOCK DIAGRAM Revision No.: 0

Base Model: Nil Revision Date: 2006-02-09

Model No.:HIF-6907MP TITLE: BLOCK DIAGRAM Revision No.: 0

Base Model: Nil Revision Date: 2006-02-09

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