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XL-HP505

2 – 1

Audio

XL-HP505

Service Manual

XLHP505

Market

E

 

• Driving Force Check

• Torque Check

fL: Low-range frequency

fH: High-range frequency

• AM IF/RF

Signal generator: 400 Hz, 30%, AM modulated

• FM RF

Signal generator: 1 kHz, 40 kHz dev., FM modulated

• FM IF

Signal generator: 10.7MHz FM modulated

• Tape Speed

•

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.

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

Play: TW-2111

Over 80 g

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

AM IF

450 kHz

1,602 kHz

T351

*1

AM Band 
Coverage

—

531 kHz

(fL): T306
1.1 ± 0.1 V

*2

AM Tracking

990 kHz

990 kHz

(fL): T303

*1

*1. Input: Antenna

Output: TP302

*2. Input: Antenna

Output: TP301

FM Band 
Coverage

—

87.50 kHz

T301 (fL):
1.3 ± 0.1 V

*1

FM RF

98.00 MHz
(10-30 dB)

98.00 MHz

L312

*2

*1. Input: Antenna

Output: TP301

*2. Input: Antenna

Output: Speaker terminal

IF

10.7 MHz

98 MHz

T302
(Turn the 
core of trans-
former T302 
fully counter-
clock wise)

*1

*1. Input: Antenna

Output: TP301

Normal 
speed

MTT-111

Variable 
Resistor in 
motor.

3,000 ± 30 Hz

Speaker Ter-
minal (Load 
resistance: 6 
ohms)

TAPE MECHANISM

Tape

Motor

Variable Resistor in motor

AM

LOOP

ANTENNA

IC302

T351

T301

IC303

T303

T306

T302

L312

CNP301

SO302

IC301

TP302

TP301

AM TRACKING fL

AM BAND

COVERAGE fL

AM IF

FM RF

FM IF

FM OSC

FM ANTENNA

TERMINAL

TUNER PWB-C

20

R356

C393

XL-HP505

2 – 2

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

*

'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.

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.

22*

When it detect invalid TRAY switch during normal operation.

31

When it change to CD function, DSP cannot read initial data.

XL-HP505

2 – 3

• Setting the test mode

During stand-by mode, press ON/STAND-BY button while pressing

down the 

button and X-BASS/DEMO button. then, press the CD

button to enter the test mode.

IL isn’t done

OPEN/CLOSE operation is using manual.

IL isn’t done

<<

>>,<<

>>buttons make pick's slide possible.

IL isn’t done

to page 2-4

<<PLAY>> key input.

C D

T E S T

A

Do TOC IL. Do normal play.
When these following key is input into PLAY key, track num-
ber can be appoint directly.

<<MEMORY>>
key input.

<<

1>> key: Track 4

<<

2>> key: Track 9

<<

3>> key: Track 15

Adjustment result automatically will
display as below for each 2 sec:
a) "FOF_XXXX"
b) "TOF_XXXX"
c) "TBAL_XX"
d) "TGAN_XX"
f) "FGAN_XX"
g) "RFLS_XX"

––––––––

<<STOP>> key input.

STOP

explanation:
a) Focus off set

= "FOF_XXXX"

b)Tracking off set

= "TOF_XXXX"

c)Tracking balance

= "TBAL_XX"

d)Tracking Gain

= "TGAN_XX"

f) Focus Gain

= "FGAN_XX"

g) RF level shift

= "RFLS_XX"

VOL — Last memory
P.GEQ — FLAT
X-BASS — OFF
To cancel : Power OFF

XL-HP505

2 – 4

Sliding the PICKUP with<<

>>, <<

>> button must only be

in STOP mode.

<<MEMORY>> key input.

Laser ON.

<<MEMORY>> key input.

Tracking OFF play at that specific point.

<<MEMORY>> key input.

Tracking ON play from that specific point.

<<MEMORY>> key input.

Adjustment result automatically will display as below for each 2 sec :
a) "FOF_XXXX"
b) "TOF_XXXX"
c) "TBAL_XX"
d) "TGAN_XX"
f) "FGAN_XX"
g) "RFLS_XX"

<<STOP>> key input.

STOP

explanation:
a) Focus off set

= "FOF_XXXX"

b)Tracking off set

= "TOF_XXXX"

c)Tracking balance

= "TBAL_XX"

d)Tracking Gain

= "TGAN_XX"

f) Focus Gain

= "FGAN_XX"

g) RF level shift

= "RFLS_XX"

VOL — Last memory
P.GEQ — FLAT
X-BASS — OFF
To cancel : Power OFF

A