Mode
Torque meter
Meter reading
FWD
20 – 30 g
•
cm
(0.28 – 0.41 oz
•
inch)
FWD
CQ-102C
0.4 – 2.0 g
•
cm
Back Tension
(0.006 – 0.02 oz
•
inch)
REV
20 – 30 g
•
cm
(0.28 – 0.41 oz
•
inch)
REV
CQ-102RC
0.4 – 2.0 g
•
cm
Back Tension
(0.006 – 0.02 oz
•
inch)
FF
CQ201B
More then 40 g
•
cm
REW
(more than 0.6 oz
•
inch)
– 9 –
– 10 –
SECTION 4
MECHANICAL ADJUSTMENT
PRECAUTION
1. Clean the following parts with a denatured-alcahol-moistened
swab :
Playback head
Pinch roller
Rubber belt
Capstan
2. Demagnetize the playback head using a demagnetizer.
3. Do not use a magnetized screwdriver for adjustments.
4. After adjusting, apply screw-locking compound onto the ad-
justed parts.
5. Unless specified otherwise, use a specified voltage (3.0 V) to
perform the adjustments.
Torqu Measurement
SECTION 5
ELECTRICAL ADJUSTMENTS
Tape Speed Adjustment
Setting:
function switch: TAPE
Procedure:
1. Playback WS-48A (tape center) in the FWD state.
2. Adjust RV601 so that the frequency counter reading becomes
3,000 Hz.
Specification Values:
3. Check that deflection of the frequency counter reading between
the beginning and the end of tape is within 1.5% (apporox. 45
Hz).
Adjustment Location:
PRECAUTION
1. Specified voltage
: 2.5 V (DC)
2. Setting
VOLUME dial
: maximum
SPEAKER switch
: OFF
AVLS switch
: NORM
MEGA BASS switch : OFF
PB EQ switch
: NORM
PAUSE switch
: off
ISS
: 1
FM SENS switch
: DX (US, CND, 5E)
FM MODE switch
: ST (E, 9E, EA, CH)
3. Abbreviation
CH
: Chinese
CND : Canadian
EA
: Saudi Arabia
5E
: Refer to “Model Identification” on page 3.
9E
: Refer to “Model Identification” on page 3.
TAPE DECK SECTION 0 dB=0.775 V
Test tape
Type
Signal
Used for
WS-48A
3 kHz, 0 dB
Tape Speed Adjustment
Frequency counter
2,985 Hz to 3,015 Hz
TUNER SECTION
0 dB=1 µV
[FM]
Setting:
function switch : FM
[AM]
Setting:
function switch : AM
• Repeat the procedures in each adjustment several times, and the
frequency coverage and tracking adjustments should be finally
done by the trimmer capacitors.
Adjustment Location:
FM FREQUENCY COVERAGE ADJUSTMENT
Adjust for a maximum reading on level meter
US, CND, 5E
E, 9E, CH
EA
L3
86 MHz
86 MHz
87.35 MHz
CT1-3
109.5 MHz
109.5 MHz
108.25 MHz
FM TRACKING ADJUSTMENT
Adjust for a maximum reading on level meter
US, CND, 5E
E, 9E, CH
EA
L2
86 MHz
86 MHz
87.35 MHz
CT1-2
109.5 MHz
109.5 MHz
108.25 MHz
AM IF ADJUSTMENT
Adjust for a maximum reading on level meter
T1
455 kHz
AM FREQUENCY COVERAGE ADJUSTMENT
Adjust for a maximum reading on level meter
US, CND, 5E
E, 9E, CH
EA
L4
515 kHz
515 kHz
516.5 kHz
CT1-4
1,750 kHz
1,680 kHz
1,631.5 kHz
AM TRACKING ADJUSTMENT
Adjust for a maximum reading on level meter
L1
620 kHz
CT1-1
1,400 kHz
Put the lead-wire
antenna close to
the set.
AM RF SSG
30% amplitude modulation by
400 Hz signal
output level: as low as possible
FM RF SSG
0.01
µ
F
MAIN board
TP340 (FM IN)
22.5 kHz frequency deviation
by 400 Hz signal.
output level: as low as possible
+
–
set
Test tape
WS-48A
(3 kHz, 0 dB)
frequency counter
16
Ω
2
(phones jack) (J301)
+
–
set
16
Ω
level meter
2
(phones jack) (J301)
Abbreviation
CH
: Chinese
CND : Canadian
EA
: Saudi Arabia
5E
: Refer to “Model Identification” on page 3.
9E
: Refer to “Model Identification” on page 3.
– MAIN BOARD (Component Side) –
– MAIN BOARD (Conductor Side) –
J302
L1
L2
L3
L4
T1
AM IF Adjustment
AM Tracking Adjustment
FM Tracking Adjustment
AM Frequency
Coverage Adjustment
FM Frequency
Coverage Adjustment
CT1-4
CT1-3
CT1-1
CT1-2
TP340
(FM IN)
J302
RV601 Tape Speed Adjustment
RV601
