Kenwood T-91 User manual

COMPUTER CONTROLLED AM/FM STEREO
SYNTHESIZER TUNER ‘<= NAVLOl@) BD)
T-91/91L
SERVICE MANUAL
© 1987-10 PRINTED IN JAPAN
tom bacicr-ten elem (©) m-401c10)
4329
Dressing plate
(BO3-2324-04)
Panel*
Metallic
cabinet"
(A20-)
{AO
1-)
KENWOOD
a
Foot
(JO2-0174-04) x 4
Phono
jack
(2P)
Slide
switch’
(E13-02
17-05)
(S31-2115-05)
Screw
terminal
board*
AC
outlet
*
(E20-) (E03-)
B Power cord bushing
(J42-0083-05)
H AC power cord”
Slide
switch*
Miniature
phone
jack
(E30-)
(S31-2075-05) x 3 (E11-0168-05)
* Refer to parts list on page 46.
Photo is T-91.
4304

T-91/91L
CONTENTS
DISASSEMBLY FOR REPAIR
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CIRCUIT DESCRIPTION
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Caution
© Always connect the power cord of the tuner to an UNSWITCHED power outlet of the amplifier. If it is connected to a
SWITCHED outlet, system power cannot be turned on at once.
DISASSEMBLY FOR REPAIR
(Remove the metallic cabinet before proceeding to the
following.)
1. Remove the 3 screws holding the front panel and
sub-panel ass’y to the bottom (@).
2. Disengage the 3 lugs holding the front panel to the
sub-panel ass’y from the upper sideg®). and remove the
front panel in the direction of the arrow.
3. Disengage the lug behind the sub-panel ass’y and
remove the Power Switch Board (X14-) (C/3) (@).
4. Disengage the 4 lugs behind the sub-panel ass’y and
remove the Control Switch Board (X14-) (B/3) (@).
5. Remove the 5 screws holding the Tuner Unit (X05-
3410-10) and Display Unit (X14-22 10-11) (A/3) to the
chassis (@).
6. Remove the 3 screws holding the rear panel to the
chassis (@).
7. Without separating the Tuner Unit (X05-) and Display
Unit (X17 4-) (A/3). remove these PC boards and the rear
panel together in the direction of the arrow (@). During
this, pay special attention not to hit the top right
projection of the FL indicator tube against the sub-panel
ass'y or any other part (@).
(Caution for assembly}
8. When attaching the FL indicator tube to the sub-panel
ass’y, be careful of the lugs on the sub-panel ass’y (@).
9. When attaching the rear panel to the chassis, be sure
to engage the 3 lugs on the rear pane! with the dented
sections on the chassis (@).

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CIRCUIT DESCRIPTION
Function of components
Tuner unit (X05-3410-10)
Component
Purpose, Function
Operation,
Condition,
Interchangeability
IC1 (LA1265)
FM/AM
system
IC
FM
IF
amplification,
detection
and
control.
AM
MIX,
IF
amplifica-
tion and detection.
IC2 (AN7470)
IC3 (LM7001)
MPX IC MPX demodulation.
Frequency synthesizer PLL IC PLL synthesizer.
FM IF amplifier 10.7 MHz amplifier.
L.P.F. LPF for the PLL.
LPF switching Time-constant switching during LW reception.
FM-AM switching IC1 mode switching. OFF during AM reception.
LPF control Q4 control, OFF for LW reception.
AM RF switching Electronic RF switching for LW and MW.
AM OSC switching Electronic OSC switching for LW and MW.
Buffer Impedance conversion.
Inverter amplifier Auto Stop control
Q13,14 Tuner band switching FM/MW/LW band switching
Q17,18
Q19
Q20
Q22
Q23
Q15,16 Mute control Operates during function switching
Operates during function switching
Power control Power ON/OFF control.
Mute switching Activates muting during function switching.
Constant voltage Regulation of +5V.
Constant voltage CE control, regulation of +5V.
Tuner band switching FM/MW/LW band switching.

T-91/91L
CIRCUIT DESCRIPTION
Display unit (X14-2210-11)
Component Purpose, Function Operation, Condition, Interchangeability
2108)
FM-AM channel space switching, or LW channel switching.
Q1
Switching between 20 ch presets and 12 ch presets, station name
switching.
zi Channel switching
Q2 Preset switching
Q3 FIP driver FIP display driver.
a4 Control Control of Q3, based on signals from the microprocessor.
FIP control
0
fos [raver ——SSSS*d TNO
[oo [meer anpifer | Restconroi__—
Front-end unit (X86-1040-10): T-91
fox tmnerPSCSCSCSCSCSCSSSCSCSCSCSCSCS
OSC buffer
Front-end unit (X86-1052-70): T-91L
Purpose, Function Operation, Condition, Interchangeability
RF amplifier
Tuned buffer
Q1
Q2
Q3
Q4
Q5

T-91/91L
CIRCUIT DESCRIPTION
1C1: CXP5016-210S (X14-2210-10)
Microprocessor
Key matrix connection i ®
SCAND 4 ScANZ <SCINT
5V
NC
RESET
} 4194304MHz CRYSTAL
SERIAL DATA
NC
28 5V
FL 1G
FL 2G
FL 3G
KEY SCANO
FL 4G
KEY SCAN 1 GRID
FL 5G
15 FL 6G
KSCAN3 K SCAN2 KSCAN] K-SCANO
16 FL 7G
K: RETURN ©.
TV BOTH 17 FL 8G
TV MAIN TB/S1S Fl a
MONO T9si4 FL b
VHF H T10/$13 Fl c
PLL DATA TS12 Fld
PLL CLOCK 1121811 Fle
PLL LATCH TI3IS 10
KEY SCAN 4
T4IS9
POWER T15/S8
FL SEGMENT
MUTING $7
BILINGUAL sé
NC $5
so $4
TEST $3
SERIAL DATA
SERIAL BUSY
be ij GNO
*T-31 0 eeT-91L
Functions of diodes and switches (0: Without diode, 1: With diode)
Destination Band Receiving Frequency jInter-Channel] Intermediate Auto
BO Range Frequency Tuning
Frequency | Terminal
FM
87.5MHz-108.0MHz +10.7MHz |
631kHz-1602kHz kHz
87.5MHz-108.0MHz | 50kHz
53 1kHz-1602kHz
18 3kHz-28 1kHz
87.5MHz-108.0MHz
53 1kHz-1602kHz
Lw
“ The T-91 Types M,U and UE are modified into Types E1 or K by switching the inter-channel space with the CHANNEL
SPACE SW (S31) on the rear panel and by adding a diode (1$$133) for BAND 2.
Before switching, turn the AC off (by pulling out the power plug), switch the switch, and turn AC on again.
If the AC power is left ON, switching the switch does not change the destination.
** With the T-91L (France made), a diode (ISS133) is added for BAND 1 to perform manual tuning in LW only.
ie)

T-91/91L
CIRCUIT DESCRIPTION
Terminal description
Symbol Name | 1/0 | H/L | Function
Not used. On the PC board, make it capable of being pulled up using a registor.
Backup (AC OFF) detection terminal. H: AC ON
When L level is detected, the backup condition is set and the clock is stopped. L: AC OFF
Note: The rise from L to H shall be faster than the rise of reset.
| 0 |
moo
| 1 | — | Notused. Pull down with the GND or a resistor.
paieg
po | H |
KEY Co Key return input. H: AC ON
All pulled down (10k to 100k) L: AC OFF
1215 PCO ~ PC3 | KEY SCANO~ 3 Key scanning signals.
H
a =
TV bilingual multiplexed audio mode control terminals.
H Mono/Auto stereo contro} terminal.
Permanently L during TV bilingual reception.
Band selection control terminal.
Selects the band by the combination with BO2
and BO3 © of PLLIC.
O | H/L
PLL DATA PLLIC data output. Connected to LM7001 DATA © terminal.
PLL CLOCK Race PLL IC clock output. Connected to LM7001 CLK@ terminal.
fF 22, Pe2 ss PLLLATCH [ O | H [| PLLIC latch output, Connected to LM7001 CE@ terminal.
KEY SCAN 4 pepe Key scanning signal
: H: POWER ON
POWER Relay control terminal. L- POWER OFE
‘ : ae : H: MUTE ON
PBI MUTING ee Muting control during band switching, frequency scans: etc. L: MUTE OFF
a
NE Not used. Pull down with a resistor.
: : : H: TUNE
28 Stop signal input for auto tuning. L: NO SIGNAL
oe H: NORMAL
Test mode setting input. L: TEST
w
BW] Wl wl a) Ww] Ww] Ww] ao N nN NR]
OPN) Olay as —-}o] © NN a oS
System control DATA output.
System control BUSY input/output.
GND terminal.
FL segment drive terminal (FL segment terminal p)
Nm
Ww
n oO
| =|=|=|={=/=[=|={=|=[=|=[=[=|=[=[1|=|=| - ae
—
FL segment drive terminal (FL segment terminal 0)
FL segment drive terminal (FL segment terminal n)
nNIn WIN
3/53 O};O FL segment drive terminal (FL segment terminal m)
n oS
FL segment drive terminal (FL segment terminal |)
wn oi ~~
FL segment drive terminal (FL segment terminal k)
39 FL segment drive terminal (FL segment terminal j)
40 $7 FL segment drive terminal (FL segment terminal i)
41 T15/S8 FL segment drive terminal (FL segment terminal h)
T14/S9 FL segment drive terminal (FL segment terminal g)
T13/S10 FL segment drive terminal (FL segment terminal f)
T12/811
T11/S12
T10/S13
ee
FL segment drive terminal (FL segment terminal e)
FL segment drive terminal (FL segment terminal d)}
j
i
h
9g
f
e
d
c FL segment drive terminal (FL segment terminal c)
b
FL segment drive terminat (FL segment terminal b)
FL segment drive terminal (FL segment terminal a)

wn a
H_| Fleid dive wii FlgidtemmsSSSCSCSCSCSCSCSSCSC*SY
H_[ AL grid dive terminal FL ghd terminal 76)
FL grid drive terminal (FL grid terminal 3G)
FL grid drive terminal (FL grid terminal 2G)
FL grid drive terminal (FL grid terminal 1G)
Not used. Connected to VoD.
System control DATA input.
Clock oscillator terminals. X'tal 4.194304MHz.
H: NORMAL
L: RESET
Not used. Open (On the PC board, make it capable of being pulled up.).
+B terminal (5V).
Reset signal input.
Pa |
=
[ [Five power supp e286.
a
=
ee
FL1:FIP12PM7 (X14-2210-11)
Fluorescent indicator tube
Terminal connection
p h A4
procram | 4] [2] off Time || auto
A5
[ STEREO } TUNED
ik)
~~
‘orm
ae
ae
WAL INA Ram of tg fo) fly ®/ =
°
ON TIME
aie
[WA
a I
MA aly fla fs If] 9 fo Jo fi »
VAM | AMBER nf fal jel leffal Lil We
x 6 x STR A
rs bee vee
8G 7G 6G 5G 4G 3G 2G 1G
* Function only in T-91, x Function only in T-91L
**%* Does not function
Pin No. 6 7 8 9 11 12
Electrode 3 i 8G P{j) P(n) 7G Plo) Pt{k) P(m) 6G P(l)
Pin No. 16 17 19 202] 22 23 24 25 26 27 28 29 30 31 32
Becton 5G P(n) P(k) Pi) P(j) 4G 4G 3G Po) P(p) P(A5)P(A4) 3G NP 2G P(A3)P(A2)P(Al) P(h)
Pin No. 33 34 35 36 37 38 39 40 41 42 43 44
Electrode P(d) 2G Pe) Plc) 1G P(g) P(f) P(b) 1G Pla) F F
Notes F: Filament P: Anode G: Grid NP: No pin
Caution: Pins 3 and 16 (isegment), pins 5 and 17 (j segment), pins 6 and 14 (n segment), pins 8 and 22 (o segment) and pins
9 and 15 (k segment) are not internally connected to each other.
Please connect each pair externally (by means of a PC board, for example).

T-91/91L
CIRCUIT DESCRIPTION
IC3: LM7001 (X05-3410-10)
PLL frequency synthesizer
Block diagram
syc Phase Detector
Charge Pump
XIN o Reference Divider
il
XOUT o
J
ie
:
FMIN
o
|
>o
ose
/\
Programable
Divider
lie
wobe
:
el
i
AMIN
o
>
16
ves
Shift Register Latch
o PD1
o PD2
Terminal description
Pin name Function
XOUT
Crystal oscillator (7.2 MHz).
Data input.
Clock for controller (400 kHz).
Band data output.
BO1 can be used as a time base output
(8 Hz)
Local oscillator signal input
Power supply.
VDD2 for back-up.
Charge pump output
Power supply.

CIRCUIT DESCRIPTION
t1>10us
Dota Input 1e>,10us
tititt
CL (PIN@)
DATA (PIN®) -
CE (PIN@)
INTERNAL DATA
<Input at DO
fooTo1 [o2[o3[ 04] os [6 [o7Tos[os] 010 [011 [12 [ 013 [tof 71 [80] 81 | 82] 78] RO] RI] R2 |
(1) DO(LSB)~D13(MSB): Dividing ratio data
FMIN uses DO-D13 and AMIN uses D4-D13.
[Do | D1 | 2 | 03] D4 | 05 | D6 | D7 | D8 D9] O10 | 011 | 012 | 013 |
1 0 1 0 0 0 0 90 90 1 0 1 1 1 -> FMIN dividing ratio= 14853
LSB MSB
Xx -&®& X X 0 0 0 0 0 1 0 1 1 1 + AMIN dividing ratio=928
LSB MSB
(2) TO, T1 For LSI checking (0,0):
(3) BO~B2: Band data
Time base data
$ : Determined by RO1~R2
X : don’t care.
TB: 8 Hz
(4) RO~R2: Reference frequency data
(5) S: Divider selection data
‘T°: FMIN, ‘0’ : AMIN
10

T-91/91L
Time adjustment with the tuner ENTER key ADJUST key
T-91 (T-91L)
SS
DISPLAY key
Numeric keys CLEAR key
—sueeP
CEE Ei AGG Be, BH.
STATION |NAME MEMORY.
Station name display Frequency display
Present time display Present time display
ON-Time display OFF-time display
Remaining time display for the sleep timer
How to adjust the present time
1. Press the tuner POWER switch ON.
2. When the display shows the frequency, press the DISPLAY key to change to the clock display.
3. Adjust the present time in following manner.
1. Press ADJUST The hour display on the left starts flashing.
2. Input the hour and minute 24 hour display is used. Every input advances the
using ten key (1 to 0) flashing to the right by one.
This indicates where to input the next.
Example
Input
in
the
order
ofO
-9—-O-—
5
9:05 Input in the order of 1 ~ 6 +5 —0
16:50 [- When 4 digits are input, the entire time display
flashes. If a wrong time is input, press the CLEAR
key and perform operation 2 and after.
The entire time display illuminates and seconds are
counted.
3.
Press
ENTER
key.
Set
the
hour
and
minute
according
to
operations
1
and
2.
Use
the
time
service
from your
TV,
radio
or
telephone,
then
press
ENTER
key.
This
operation
is
liluminates. practical and convenient. Pressing ADJUST key
while setting the time brings the operation back to
the first operation.
Note:
If the power is interrupted, or the power cord is disconnected from the AC outlet, after the present time has been set, the time display will
blink continuously. In this case, adjust the present time again from step (1).
11

T-91/91L
Listening to broadcasts
To listen to FM and AM (T-91), or
FM/MW/LW (T-91L)
Auto/Manual tuning
Band select keys AUTO key
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TUNING/CHARACTER key
1. Select the desired band with the band select keys
(FM/AM for T-91, FM/MW/LW for the T-91L).
2. Press the AUTO key to select the tuning mode, auto or
manual. (While in auto tuning mode, the AUTO indicator
lights in the display window.)
¢ In auto tuning mode, pressing the TUNING/CHARACTER
key once will tune to the first broadcast station in the direc-
tion of the key pressed, and then tuning stops. When a
stereo broadcast is received, the STEREO indicator lights
in the display.
¢ In manual tuning mode, each time the TUNING/
CHARACTER key is pressed, the frequency is moved up or
down by one step. When it is kept pressed, the frequency
is continuously moved up or down until the key is released,
when the required station reaches.
Direct tuning |
Band select keys
ee eee
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Numeric keys DIRECT key
CLEAR key DISPLAY key
This function allows you to tune to a desired station by
directly entering the frequency.
1. Select the band with the band select keys (FM/AM for
the T-91, FM/MW/LW for the T-91L).
2. Press the DISPLAY key to display the frequency, then
press the DIRECT key when the frequency is displayed.
® The first column in which the first frequency number is
to be input begins blinking.
3. Referring to the input example, input the frequency
numbers using the numeric keys.
4. The tuner tunes to the frequency of the station which is
input.
© if the input frequency is out of the band range, the fre-
quency display blinks for 5 seconds, and an error
display appears, then the previous mode resumes.
5. If the numbers are incorrectly input by mistake, press
the CLEAR key.
® When the CLEAR key is pressed, first column input
mode resumes.
12
Frequency input example with the numeric keys
e Example for radio broadcasts
1, 0, 1, O (100 kHz space)
FM: 101.00 MHz
1,0
AM: 810 kHz 1
AM: 1240 kHz 2
, 1, 0, O (50 kHz space)
,0
4,0
'
How to preset broadcasts (FM/
AM for the T-91, FM/MW/LW for
the T-91L)
Band select key
ENTER key
A/B select key
DISPLAY key
Numeric keys
TUNING/CHARACTER
select key
A total of 12 stations can be preset if the station names are
attached to each, and a total of 20 stations can be preset if
no station names are included. (Select either mode with the
STATION NAME AND PRESET select key located on the
rear of the tuner.)
Station Name and Preset select key on the rear of the tuner
{O_] : When station names are also displayed (6 sta-
tions for each A and B preset)
Co) : When station names are not displayed (10 sta-
tions for each A and B preset)
(Setting when shipped)
Notes:
1. Be sure to change the setting of the STATION NAME AND
PRESET switch (preset channel select switch) after unplugging
the power cord of the tuner from the AC outlet.
2. If this operation is performed after setting the broadcast fre-
quencies, all the preset contents will be cleared.
1. Press the DISPLAY key to display the frequency.
2. Select the desired band with the band select keys
(FM/AM for the T-91, FM/MW/LW for the T-91L).
3. Tune to the station you wish to stored in memory using
the TUNING/CHARACTER key, or by the direct tuning
method.
¢ When storing the station name, input it at this time,
referring to the ‘’Station name display’’ section on page
22. (The station name can also be input after storing
the frequency.)
4. Press the ENTER key.
e ‘’MEMORY"” is displayed in the display window.
5. Select preset group A or B with the A/B select key.
e If this operation is omitted, the currently indicated
preset group is selected.

6. Within 5 seconds, press any of the 1 to 6 (when the sta-
tion name is required), or 1 to 10 (when the station
name is not required), numeric keys.
¢ The MEMORY indicator goes off and the number cor-
responding to the numeric key pressed appear in the
preset channel display. In the same way, preset other
stations.
Notes: —$
1. When a new station is stored in a preset channel in which
another station has been stored, the previously preset station
is cleared and the newly preset station is stored in memory.
2. Press a numeric key (1 to 0) after releasing the ENTER key.
3. If a numeric key (1 to 0) is pressed while pressing the ENTER
key, the same frequency may also be stored in another preset
channel.
4. When the station name is also stored, the 7 to 0 numeric keys
do not function.
How to select the preset channel |
Numeric keys
A/B select key
Select the preset channel group A or B with the A/B select
key, and select the desired preset channel with the numeric
keys (1 to QO).
e When A/B selection is not performed, the currently in-
dicated group is selected.
Note:
When the station names are also stored in memory, the 7 to 0
numeric keys cannot be used for recalling the preset stations.
Last channel memory
BAND select key
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POWER switch
When the tuner’s power is first turned ON, when the band
is changed (between FM and AM for the T-91, between
FM, MW, and LW for the T-91L), or when the input selec-
tor on the amplifier is changed from another source to the
tuner, the last received broadcast will be recalled for each
band (FM/AM for the T-91, FM/MW/LW for the T-91L).
Note:
if the power cord is disconnected from the AC outlet, the preset
frequencies will be cleared after about 3 days have elapsed.
T-91/91L
Tuner
P.SCAN key
1. Press the P.SCAN key.
e Each of the preset frequencies will be received for
about 5 seconds in sequence. When a frequency is not
stored, the frequency stored in the next preset channel
will be recalled after one second. The preset channel
scanning operation starts from the next channel if any
of the preset channel is being received; if not, it is
started from channel A-1. (As in the following figure.)
(A-O) (B-O)
A-1 — A-2 ...... A-6 — B-1 — B-2...... B-6
Displays are as shown in parentheses (__) when the
station names have not been registered.
2. To release preset scanning, press the P.SCAN key
again.
13

T-91/91L
Station name display (Station name preset)
ENTER
key
owe
KENWOOD _ computer contnouen AM/FM STEREO SYNTHESIZER TUNER 7-91
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8888 *i8b80=80.
STATION NAME ao.
DIGIT key
Numeric keys CHARACTER key
First set the STATION NAME AND PRESET switch located on
the rear panel of the tuner to the ‘’12’’ side. (The tuner is
shipped with this setting.)
How to input characters
Example 1:
When a broadcast not stored in the preset channel is receiv-
ed. Receive FM 91.5 MHz and then input the character
“WNY"' to be preset into the A-3 channel.
Character display selected by the TUNING/CHARACTER
key
PROGRAM auto
Pt F7 we
rIju
STATION NAME
Press
the
CHARACTER
key.
Character
input
mode
is
engaged,
and
the
first
col-
PROGRAM
Auto
a
umn
in
the
character
display
section
begins
blinking.
qo
I.
G
a
mu
(A)
—
STATION NAME
Press the TUNING/CHARACTER key to select
ow, PROGRAM AUTO {STEREO} (Tuned)
1 01 wm a
a
STATION NAME
Press the DIGIT key.
The
blinking
column
shifts
to
the
next
column
(on
AUTO
(rune)
the
right).
a
os
q
i
c
co
we
(A)
STATION NAME
Press the TUNING/CHARACTER key to select
oN", woro TERED) (RE) _
tf O 10 Fim
Ww iV i at cas i
STATION NAME

Press the TUNING/CHARACTER key to select
aye
Press the DIGIT key.
Press the DIGIT key or the CHARACTER key.
Press the ENTER key, then press the ‘’3’’ numeric
key.
When inputting characters, the character selected by the
memory is initially set to enable character selection.
If a character is input by mistake, press the CLEAR key to
return to the first column.
Even in the middle of inputting, pressing the CHARACTER
key twice will release character input mode. At this time,
auto (TERED) [FuneD] __suter
O tf tm f) -
J roju
ch
PROGRAM auto [STEREO
riny Io fim B
WANG 450" 4
STATION NAME
PROGRAM auto [STEREO] [TUNED]
Ht aAtw I Pim
NIV 1 q LS [js @-
STATION NAME
ch
auTo [STEREO] [TUNED]
Li Pim =
rou a ch
re
td
STATION NAME
PROGRAM auto {STeneo] [TuNEo}
ft aAgow (1 Pine
WIN:
9
i509.
STATION NAME
the characters which have already been input will be
stored in memory.
When inputting of the characters is completed for any of
the preset channel received, the input character data will
automatically be stored into the preset channel which is
currently being received.
15

ENTER key
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Numeric keys
Example 2:
To change the station name for AM 810 kHz, stored in the B-2 memory, from ‘‘FHN 8” to ‘‘FEN’’
According to ‘‘How to recall a preset channel’’,
recall the station using the A/B select key and the
numeric keys.
PROGRAM
T Laat
f- HN
STATION NAME
Press the CHARACTER key.
PROGRAM
ON TIME
NE ID
IHN 8
STATION NAME
Press the DIGIT key to send the blinking column to
the
next
one
ON
TIME
PROGRAM
FING
STATION NAME
Press the TUNING/CHARACTER key to select
“ere
ON TIME PROGRAM
H
STATION NAME
a
Press the DIGIT key twice.
ON TIME
oe
a h 4
STATION NAME
PROGRAM
Press the TUNING/CHARACTER key to select a
blank *’__’’
ON TIME PROGRAM
STATION NAME
Press the DIGIT key or the CHARACTER key.
ON TIME PROGRAM
rf Al
ff Lt
STATION NAME
GFE Md re
ie ee a i
DIGIT key
TUNING/CHARACTER
select key
CHARACTER key
a
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[TONED] 4
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How to use the timer
The timer incorporated in the tuner can be used in the following four ways.
3. Timer play with the cassette deck
When Using timer play (for awakening, etc.),
be careful of the volume level on the amplifier.
1.
Timer play with the tuner
1
WN
5
6
Set the desired start time and the broadcast station
according to '’How to set the timer program’’ on page
26.
Remove the disc if one is loaded in the CD player.
Set the TIMER switch on the cassette deck to OFF.
Press the ‘’TUNER’’ Input Selector key on the
amplifier.
Adjust the volume level with the VOLUME key on the
amplifier.
Set the POWER switch of the amplifier or tuner to
STANDBY.
When the preset time is reached, power is automatically
supplied to the tuner and broadcast reception begins.
Timer play with the CD player (DP-710)
1
2
3
4
5
Set the desired start time according to ‘‘How to set
the timer program’ on page 26. (Leave the preset
channel on the tuner set to any desired position.)
Load a disc in the CD player.
Set the TIMER switch on the cassette deck to OFF.
Adjust the volume level with the VOLUME key on the
amplifier.
Set the POWER switch of the amplifier or tuner to
STANDBY.
When the preset is time reached, the Input Selector will
be automatically set to the CD position and play will start
in the CD player.
1
2
3
7
Set the desired start time according to ‘How to set
the timer program’’ on page 26.
Load a recorded cassette tape into the cassette deck.
Set the DOLBY NR switch of the cassette deck depen-
ding on the tape used.
Set the DIRECTION switch of the cassette deck as
desired.
Set the TIMER switch of the cassette deck to the
PLAY position.
Adjust the volume level with the VOLUME key on the
amplifier.
Set the POWER switch of the amplifier or tuner to
STANDBY.
When the preset time is reached, power is automatically
supplied to the cassette deck and tape playback starts.
Timer recording of broadcasts
1
2
oo
7
Set the start and stop times with the tuner according
to ‘How to set the timer program’’ on page 26.
Load a recordable cassette in the A deck or the B
deck.
Set the DOLBY NR switch of the cassette deck to the
desired position.
Set the DIRECTION switch of the cassette deck to the
desired position.
Set the TIMER switch of the cassette deck to REC.
When performing timer recording (unattended recor-
ding), be sure to minimize the volume level of the
amplifier, or set the MUTING switch of the amplifier to
ON.
Set the POWER switch of the amplifier or tuner to
STANDBY.
When the preset time is reached, recording starts
automatically on the cassette deck.
T-91/91L
17

T-91/91L
Timer function
Timer
program
and
sleep
timer
functions
are
provided
with
playback
or
timer
recording,
and
2
pairs
of
ON-times
and
this
tuner.
The
timer
program
function
is
used
for
timer
OFF
times
can
be
preset.
The
timer
function
will
continue
every
day
once
the
preset
times
are
set.
PROG.1
key
PROG.2 key
EXE.122 key
ENTER key
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SLEEP key
POWER
switch
Numeric
keys
CLEAR
key
steer
nT OG G's BA.
STATION [NAME MEMORY
Program timer Program timer OFF-time display
ON-time display Remaining time display for Sleep timer
How to set the timer program
Before operating, be sure to adjust the present time (refer to page 19).
Before setting a timer program, preset the broadcast frequencies.
¢ How to set the timer (Common to program Example 1:
7]
and
[2]
)
To
set
the
ON-time
(8:45)
and
OFF-time
(9:35)
for
Timer
CU, with a preset channel (B-2)
Timer setting is possible only when the power is ON, but
the contents of the timer program can be checked with the
power OFF.
Present status:
An
FM
91.5
MHz
broad-
PROGRAM
AUTO
_—_—
ich
i
i
™
2
tl
Tt
wm
=
cast,
which
is
stored
in
is
ae
as
es
a
.
the A-3 channel, is being
received.
STATIGN NAME
When the PROG.1 key is pressed, a
“(1 blinks and the contents of pro-
gram timer [1] are displayed.
The display appears for about 5
seconds. During that time, pressing
the ENTER key engages timer setting
mode.
When the display appears, pressing
the PROG.1 key again will resume the
previous status.
Press the PROG.1 key.
ON TIME PROGRAM OFF TIME AUTO [STEREO] [TUNED] _— SLEEP
men Ale OF
areitwu trou bin
STATION NAME
18

* tal shows the indicator or display blinking.
Press the ENTER key.
When the ENTER key is pressed, the
“PROGRAM [1] “indicator blinks, to
show that timer setting mode is
engaged. At the same time, the first
column of the ON TIME display
begins to blink, which shows that the
time can be input.
When the ON time is not changed,
press the ENTER key to shift the
blinking column to the OFF TIME.
ON_TIME OFF TiME AUTO [STEREO] [TUNED] SLEEP
on™
onan
as
eau w Cruou fin
STATION NAME
When a ‘‘0”’ is input, the first cotumn
of the ON TIME display, a “O”’, is
changed to light steadily, and the se-
cond column begins to blink. If a
number is input incorrectly or by
mistake, press the CLEAR key to
return the blinking column to the first
one. Then input new numbers from
the first column.
ON-time input:
Input numeric key '’0’’.
ON TIME OFF TE AUTO [STEREO] (TUNED)
Hin
NnAn
wt
Lice
ul
uwouu
bin
When the four ON time columns are
completed, the entire ON time display
begins to blink, to show that the ON-
time input has been finished. If it is
complete, press the ENTER key.
if only three columns are required,
ON TIME ___IPROGRAN press the ENTER key when the three
numbers are input. To correct the in-
put numbers, press the CLEAR key.
The display returns to the first column
to accept the new numbers.
ON-time input with the
numeric keys:
Input in the order
8-4-5
ON-time set:
Press the ENTER key.
When inputting character is com-
plete, the ON-time display is lit steadi-
ly, and the first column of the OFF-
time begins to blink, to accept the
OFF time input. At this time, if the
ON-time is mistakenly input, press
the CLEAR key to return to the first
column for new numbers to be input.
ON TIME {PROGRAM [1]} OFF TIME AUTO i
q ii won wl
AY 1 Uru ul fin
OFF time input and set:
Input in the order
0O—-9-— 3 — 5, the
press the ENTER key.
When the OFF-time input is com-
pleted, the OFF time display is lit
steadily, and the preset channel in-
dicator begins blinking, to show that
preset channel input mode has been
entered. At this time, if the time is in-
put by mistake, press the CLEAR key
once to retum to OFF-time input
mode, and press it twice to return to
ON-time input mode. ,
If it is not necessary to modify the
OFF-time, press the ENTER key.
ON TIME PROGRAM a OFF TIME AUTO [STEREO | [TUNED
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19

T-91/91L
* 5 shows the indicator or display blinking.
Preset channel input:
Select B with the A/B
select key and input
When the A/B select key is pressed,
the currently selected preset channel
indicator is changed (A —8B or
B— A).
eee
ON TIME rosea} OFF TIME AUTO [STEREO
M
"9°" with the numeric rm o- itn n fe aad When a numeric key is pressed, the
ty "77 Q): 4 aw input number appears in the preset
key. — C J uy 4 -” channel display. If mistakenly input,
press the CLEAR key to return to the
previous status.
Timer set completion
Press the ENTER key.
When the preset channel input is
completed, press the ENTER key, The
preset channel indicator and the
“PROGRAM” indicator lights steadi-
ly, to show that the timer setting is
finished. This display status con-
tinues for about 5 seconds, then the
initial status resumes.
Notes:
1. When setting the timer to program 1, pressing the PROG.1 key 2. When the station names are also stored, the selectable preset
will release timer setting mode and the initial status resumes. channels are 1 to 6 for both A and B.
(Program 2 operates in the same way.)
To use the timer
A timer operation will be performed by setting the EXE.1 == 2
key. Each time this key is pressed, a timer program is selected
in the following order:
Change of the Program fa)/ [2] indicators
Program 1 will be executed Program 1 and 2 will be executed
0) —— > (2) ———————S [1] (2) ————— Goes out
Program 2 will be executed Program cancel
20