Adjustment; Mechanism Section; Tape Section; Adjustment Points - Sharp CD-C500Z Service Manual

As for preparation for adjustment, adjusting method and re-
placement of pickup refer to the relevant explanation in Service
Manual "ADJUSTMENT PROCEDURES OF AUDIO PRO-
Driving Force Check
l
Torque Meter
P l a y : T W - 2 4 1 2 O v e r 5 0
Reverse Play: TW-2422
Torque Check
l
Torque Meter
Play: TW-2111
Reverse Play: TW-2121
Fast Forward: TW-2231
Rewind: TW-2231
Head Azimuth
l
Test Tape
MTT-114
Tape Speed
l
Test Tape Adjusting
Point
High Ml-T-1 11 Tape1 :
speed* VR404
Tape2:
VR402
Normal
MTT-111 Tape1 :
speed VR401
Tape2:
VR403
*Short TP402 @ and TP402 0 when performing the high speed

adjustment.

Figure 18 ADJUSTMENT POINTS
Specified Value
Tape 1 Tape 2
g
Over 60 g
Over 50 g Over 60 g
Specified Value
Tape 1
Tape 2
27 to 60 gem 27 to 60 g.cm
27 to 60 gem 27 to 60 g.cm
55 to 120 gem 55 to 120 g.cm
55 to 120 g.cm 55 to 120 gem
Instrument Connection
Headphones socket
(Load resistance: 32 ohms)
Specified Instrument i
Value Connection
6,000 i Speaker
100 Hz
terminal (Load
resistance: 6 j
ohms)
3,000 +
Position of each switch or control
Volume
Graphic Equalizer
Function
Dolby NR
Beat cancel
Tape selector
Dubbing speed
Bias Frequency
l
Adjusting Specified Value
Point
L411
100 kHz
(BEAT CANCEL Switch : A)
Bias Current
l
Specified Value
L: VR407 Normal: 20 i 3 V
R: VR408
Erase Current Check
l
Resistor for measurement:
1 ohm
Playback Amplifier Sensitivity
l
Adjusting Specified
Point
MT-T-1 50 L: VR405 Normal:
560 mV
Record /Playback Sensitivity (Tape 2)
l
Test Tape: UR-121
Input Level Adjusting Specified
Point
l 1
L: VR409
R: VR410 103 mV
* 1: Adjust the oscillator so that TP401 output is 103 mV in the
recording mode.
Playback Amplifier Sensitivity Check
l
Test Tape 1 Specified
Value
2.7 V + 3dB
Max
Center
Tape
Off
A
Normal
Normal
Instrument
Connection
Q421 Emitter /
Instrument
Connection
L: Pin 1 of CNP404*
Specified Value
Instrument Connection 1
Value
L: Pin3 of TP401
R: Pin1 of TP401
Instrument Connection
Value
Input: AuxAIideo
Output: TP401
Instrument
Connection
Speaker terminal
(Load resistance:6 ohms)