Service manual

– 13 –
CD-C449W/K449W
MECHANISM SECTION
• Driving Force Check
Torque Meter
Specified Value
Play: TW-2412 Tape 1: Over 80 g
Tape 2: Over 80 g
• Torque Check
Torque Meter
Tape 2
Play: TW-2111 30 to 60 g. cm 30 to 100 g.cm
Fast forward: TW-2231 — 50 to 100 g.cm
Rewind: TW-2231 — 50 to 100 g.cm
Specified
Value
Adjusting
Point
Instrument
Connection
Test Tape
Normal MTT-111 VRM01 3,000 ± Speaker
speed 30 Hz terminal
(Load
resistance:
8 ohms)
ADJUSTMENT
Specified Value
Tape 1
• Tape Speed
Figure 13
VRM01
TAPE
SPEED
FAS
SW
TAPE MECHANISM PWB
IF 450 kHz 1,602 kHz T351 *1
MW Band — 531 kHz (fL): T306 *2
Coverage 1.1 ± 0.1 V
SW1 Band — 3.2 MHz (fL): T307 *2
Coverage 2.0 ± 0.1V
SW1 Band — 7.3 MHz (fH): TC305 *2
Coverage 7.7 ± 0.2 V
SW2 Band — 9.5 MHz (fL): T308 *2
Coverage 2.1 ± 0.1V
SW2 Band — 21.85 MHz (fH): TC304 *2
Coverage 7.7 ± 0.2V
MW 990 kHz 990 kHz T302 *1
Tracking
SW1 3.9 MHz 3.9 MHz (fL): T303 *1
Tracking
SW1 7.1 MHz 7.1 MHz (fH): TC303 *1
Tracking
SW2 11.65 MHz 11.65 MHz (fL): T304 *1
Tracking
SW2 21.45 MHz 21.45 MHz (fH): TC302 *1
Tracking
TUNER SECTION
fL: Low-range frequency
fH: High-renge frequency
• AM IF/RF
Signal generator: 400 Hz, 30%, AM modulated
Test Stage
Instrument
Connection
Frequency
Frequency
Display
Setting/
Adjusting
Parts
*1. Input: Antenna, Output: TP302
*2. Input: Anetnna, Output: TP301