Sony HCD-H7 - MECHANICAL AND ELECTRICAL ADJUSTMENTS

SECTION 4
MECHANICAL ADJUSTMENTS
PRECAUTION
1. Clean the following parts with a denatured alcohol-
moistened swab:
record/playback head
erase head
capstan
pinch roller
rubber belt
idler
2. Demagnetize the record/playback head with a head
demagnetizer.
(Head demagnetizer do not approach for the erase head.)
3. Do not use a magnetized screwdriver for the adjustment.
4. After the adjustments, apply suitable locking compound
to the parts adjusted.
5. The adjustment should be performed with the rated
power supply voltage unless otherwise noted.
e Torque Measurement
Torque meter Meter reading
Forward
CQ-102C
a
ae
CQ-102C
Reverse
CQ-102RB
ae
CQ-102RB
ae
CQ-201B
Timer Test Mode
30 to 60g*cm
(0.42 to 0.830z*inch)
1 to 5g*cm
(0.014 to 0.0690z*inch)
30 to 60g*cm
(0.42 to 0.830z*inch)
1 to 5g*°cm
(0.014 to 0.0690z* inch)
100 to 170g*cm
(1.39 to 2.360z*inch)
When BAND, SHIFT and PRESET/TIMER+buttons are
pressed at the same time the following time test operation is
performed. After the operation, it becoms in the system
reset mode. Take care that the frequency preset to the tuner
is initialized.
1) POWER OFF
2) Timer set Clock AM10: 23
Timer ON
Timer OFF
Function
AM10: 24
AM10: 31
TUNER
3) FL tube display (FLT501)
All light
for 2 seconds
“AM 10: 23”
for 0.5 second
“AM 10: 24”
for 0.5 second
~<————-POWER ON
for 2 seconds
Last channel
for 1 second
“AM 00: 00” flashing <«———POWER ON
“TUNER”
4) Finish
HCD-H7/H1500
SECTION 5
ELECTRICAL ADJUSTMENTS
DECK SECTION
1. The adjustment should be performed in the publication.
(Be sure to make playback adjustment at first.)
2. The adjustment and measurement should be performed
for both L-CH and R-CH.
e Switch position
DOLBY NR switch: OFF
e Test Tape
Head Azimuth Adjustment
Level Adjustment
Tape Speed Adjustment
P-4-A100
P-4-L300
WS-48B
10kH, —10dB
315Hz, 0dB
3kHz, 0dB
Record/Playback Head Azimuth Adjustment
Procedure :
1. Forward Playback Mode
test tape
P-4-A100
(10kHz, —10dB)
DOLBY OUT TP701
e Preset Frequency in Restting
When pressing the system reset button (S702) of the rear
side of the unit, the following frequency is preset to the
tuner part. When the system reset is performed in repairing,
be sure to return to the frequency set by the user.
US, Canadian model
MW tuning
interval : 10k (9k)
AEP, UK, WG, IT model
( ): Italian model
Al 87.5MHz || A6
A2 88.0MHz |! A7
A3 98.0MHz || A8
A4 106.0MHz |} A9
AS 108.0MHz || Ad
530(531)kHz | A6
620(621)kHz | A7
1050(1053)kHz | A8
1490(1485)kHz | A9
1710kHz | AO
531(522)kHz
603kHz
999kHz
1404kHz
1602(1611)kHz
153(144)kHz
162kHz
216kHz
270kHz
279(288)kHz
E, EA, AUS model
MW tuning interval: 9k (10k)
5.95MHz
7.00MHz
12.00MHz
17.00MHz
17.90MHz
Al 87.5MHz |} A6
A2 88.0MHz || A7
A3 98.0MHz |} A8
A4 106.0MHz || A9
AS 108.0MHz |} AO
531(530)kHz
603(620)k Hz
999(1050)kHz
1404(1490)kHz
1602(1710)kHz