Sony HCD-H77 - MECHANICAL ADJUSTMENTS; Precautions and Torque Measurement; Timer Test Mode Operation; ELECTRICAL ADJUSTMENTS

SECTION 4
MECHANICAL ADJUSTMENTS
PRECAUTION
1. Clean the following parts with a denatured alcohol-
moistened swab:
record/playback head pinch roller
erase head rubber belt
capstan 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.
© Torque Measurement
30 to 60g*cm
cone (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)
Forward
Forward
back tension Poe.
Reverse
Reverse
e Timer Test Mode
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) Timerset Clock
Timer ON
Timer OFF
Function
3) FL tube display (FLT501)
All light
Y for 2 ai
AM10: 23
AM10: 24
AM10: 31
TUNER
“AM 10: 23”
Y for 0.5 second
“AM 10: 24”
__¥ __ for 0.5 second
“TUNER” _ | —— POWER ON
for 2 seconds
Last channel
for 1 second
“AM 00: 00” flashing _|--—-—- POWER ON
4)
| HCD-H66/H70/H77/H1200/H1400 |
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
eTest Tape
P-4-A100
10kH, —10dB
315Hz, 0dB
3kHz, 0dB
Head Azimuth Adjustment
Level Adjustment
Tape Speed Adjustment
P-4-L300
WS-48A
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 prese! to the
tuner part. When the system reset is performed in repairing,
be sure to return to the frequency set by the user.
HCD-H66/H77/H1200/H1400
( ): Italian model
87.5MHz
88.0MHz
98.0MHz
106.0MHz
108.0MHz
531(522)kHz | Bl 153(144)k Hz
603(522)kHz | B2 162kHz
999(522)kHz | B3 216kHz
1040(522)kHz | B4 270kHz
1602(1611)kHz | BS 279(288)k Hz
HCD-H70
MWtuning interval : 9k (10k)
87.5MHz
88.0MHz
98.0MHz
106.0MHz
108.0MHz
5.95MHz
7.00MHz
12.00MHz
17.00MHz
17.90MHz
531(530)kHz
603(620)kHz
999(1050)kHz
1404(1490)kHz
1602(1710)kHz