Roadstar HIF-9907 User manual

Service Manual - HIF-9907
R
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
32
21-23
24-25
6-16
19-20
17-18
TITLE: INDEX
3
4-5
27-31
26
33-34
35-36
2

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
3

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/AM465KHZ 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 to108MHz 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 600KHz
(
high end) AM Lowend
TITLE: ALIGNMENT
4

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:
TITLE: ALIGNMENT
5

TITLE: BLOCK DIAGRAM
6

TITLE: BLOCK DIAGRAM
7

TITLE: BLOCK DIAGRAM
UTC2025
8

TITLE: BLOCK DIAGRAM
9

TITLE: BLOCK DIAGRAM
10