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XLHP535H
Service Manual
CHAPTER 2.
XL-HP535H/HP535E
Audio
ADJUSTMENTS
[1] ADJUSTMENT
1. MECHANISM SECTION
• Driving Force Check
Torque Meter
Play: TW-2111
Over 80 g
• Torque Check
Torque Meter
Play: TW-2111
30 to 80 g.cm
Fast forward: TW-2231
70 to 180 g.cm
Rewind: TW-2231
70 to 180 g.cm
2. TUNER SECTION
fL: Low-range frequency
fH: High-range frequency
• AM IF/RF
Signal generator: 400 Hz, 30%, AM modulated
Test Stage
Frequency
Frequency
AM IF
450 kHz
1,620 kHz
AM Band
—
522 kHz
Coverage
AM Tracking
990 kHz
990 kHz
*1. Input: Antenna Output: TP302
*2. Input: Antenna Output: TP301
TUNER PWB-C
TP301
C393
20
T351
AM IF
Figure 2 ADJUSTMENT POINTS
Notes:
1. Description of the "FM IF Adjustment" is not carried on this Manual.
It is because the IF coil in the FM front end section has been best
adjusted in the factory so that its further adjustment is not needed
at the field. When replacing the FM front end assembly, no adjust-
ment is needed either.
2. The parts in the FM front end section are prepared in a complete
unit, so you can't obtain each part individually.
Specified Value
Specified Value
Setting/
Instrument
Display
Adjusting
Connection
Parts
T351
*1
(fL): T306
*2
1.1 ± 0.1 V
(fL): T303
*1
SO301
ANTENNA
TERMINAL
AM
LOOP
ANTENNA
CNP302
FE301
AM TRACKING fL
T303
T306
AM BAND
COVERAGE fL
L354
TP302
• Tape Speed
Test Tape
Normal
MTT-111
speed
TAPE MECHANISM
3. CD SECTION
•
Adjustment
Since this CD system incorporates the following automatic adjust-
ment functions, readjustment is not needed when replacing the
pickup. Therefore, different PWBs and pickups can be combined
freely.
Each time a disc is changed, these adjustments are performed
automatically. Therefore, playback of each disc can be performed
under optimum conditions.
Items adjusted automatically
1) Offset adjustment (The offset voltage between the head amplifier
output and the VREF reference voltage is compensated inside the
IC.)
* Focus offset adjustment
* Tracking offset adjustment
2) Tracking balance adjustment
3) Gain adjustment (The gain is compensated inside the IC so that the
loop gain at the gain crossover frequency will be 0 dB.)
* Focus gain adjustment
* Tracking gain adjustment
4. CD ERROR CODE DESCRIPTION
Error
01
When Pickup set inner position, inner switch cannot detect
'ON' level for 10 secs.
10*
CAM error. Can't detect CAM switch when CAM is moving.
11*
When it detect cam operation error during initialize process.
20*
TRAY error. Can't detect TRAY switch when TRAY is mov-
ing.
21*
When it detect TRAY operation error during initialize pro-
cess.
31
When it change to CD function, DSP cannot read initial data.
* 'CHECKING'
If Error is detected, 'CHECKING' will be displayed instead of 'ER-
CD**'. 'ER-CD**' display will only be displayed when error had been
detected for the 5th times.
2 – 1
XL-HP535H/HP535E
Adjusting
Specified
Point
Value
Variable
3,000 ± 30 Hz
Resistor in
motor.
Tape
Motor
Variable Resistor in motor
Figure 1
Explanation
Instrument
Connection
Speaker Ter-
minal (Load
resistance: 6
ohms)
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