Roadstar HIF-9907 Service Manual

Service Manual

- HIF-9907

HIF-9907

Service Manual

- HIF-9907

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

37-40

21-23

24-25

6-16

19-20

17-18

TITLE: INDEX

4-5

27-31

33-34

35-36

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 :540KHz-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-9907

TITLE: WARNING AND TECHNICAL

SPECIFICATION

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 V 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 540KHz Tune to 540KHz 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

Tune to 90.3M/AM 600 KHz

high end) AM Lowend

TITLE: ALIGNMENT