Adjustment - Sharp CMS-R600X(BK) Service Manual

CMS-R600X/R600XT
TAPE MECHANISM SECTION
• Driving Force Check
Torque Meter
Play: TW-2412
• Torque Check
Torque Meter
Play: TW-2111 30 to 60 g. cm
Fast forward: TW-2231
Rewind: TW-2231
• Tape Speed
Adjusting
Test Tape
Point
Normal MTT-111 VRM1
speed
TUNER SECTION
fL: Low-range frequency
fH: High-renge frequency
• AM IF/RF
Signal generator: 400 Hz, 30%, AM modulated
Test Stage Frequency Frequency
Display
IF 450 kHz 1,720 kHz
Band — 530 kHz
Coverage
Tracking 990 kHz 990 kHz
*1. Input: Antenna, Output: TP302
*2. Input: Antenna, Output: TP301
C364
R358

ADJUSTMENT

Specified Value
Tape 1: Over 50 g
Tape 2: Over 100 g
Specified Value
Tape 1
Tape 2
30 to 60 g.cm
— 80 to 135 g.cm
— 80 to 135 g.cm
Specified Instrument
Value Connection
3,000 ±
Speaker
30 Hz terminal
(Load
resistance:
8 ohms)
Setting/ Instrument
Adjusting Connection
Parts
T351 *1
(fL): T333 *2
3.4 V ± 0.1 V
(fL): T331 *1
MAIN PWB-A1
COVERAGE fL
AM IF
T351
FM MUTE
VR351
LEVEL
IC351
12 1
TP301
13 21 24
AM BAND
COVERAGE fL
TP302
Figure 10 ADJUSTMENT POINTS
• FM RF
Signal generator: 1 kHz, 75 kHz dev., FM modulated
Test Stage Frequency Frequency
Band —
Coverage
RF 98.00 MHz 98.00 MHz L302
(10-30 dB)
*1. Input: Antenna, Output: TP301
*2. Input: Antenna, Output: Speaker terminal
• Detection
Signal generator: 10.7 MHz, FM sweep generator
Test Frequency
Stage
IF 10.7 MHz
• FM Mute Level
Frequency
Frequency
Display
98.00 MHz 98.00 MHz
(25 dBµV)
*1 Adjust so that an output signal appears.
TAPE MECHANISM PWB-G
FM BAND
IC301
L303
1
L302
FM RF
T301
FM IF
T331
T333
AM TRAKING fL
– 10 –
Serring/ Instrument
Display Adjusting Connection
Point
87.50 MHz L303(fL):
1.85 V ± 50 mV
Frequency
Adjusting Instrument
Display
Parts Connection
98.00 MHz T301(Turn Input: Pin 1 of
the core of IC301
transformer Output: TP302
T301 fully
counter-
clookwise.)
Adjusting Instrument
Parts Connection
VR351 *1 Input: SO301
Output: Speaker
Terminal
TAPE
SPEED
VRM1
SO301
ANTENNA
TERMINAL
2
AM LOOP ANTENNA
1
CNP301
*1
*2